--- _id: '14841' abstract: - lang: eng text: De novo heterozygous variants in KCNC2 encoding the voltage-gated potassium (K+) channel subunit Kv3.2 are a recently described cause of developmental and epileptic encephalopathy (DEE). A de novo variant in KCNC2 c.374G > A (p.Cys125Tyr) was identified via exome sequencing in a patient with DEE. Relative to wild-type Kv3.2, Kv3.2-p.Cys125Tyr induces K+ currents exhibiting a large hyperpolarizing shift in the voltage dependence of activation, accelerated activation, and delayed deactivation consistent with a relative stabilization of the open conformation, along with increased current density. Leveraging the cryogenic electron microscopy (cryo-EM) structure of Kv3.1, molecular dynamic simulations suggest that a strong π-π stacking interaction between the variant Tyr125 and Tyr156 in the α-6 helix of the T1 domain promotes a relative stabilization of the open conformation of the channel, which underlies the observed gain of function. A multicompartment computational model of a Kv3-expressing parvalbumin-positive cerebral cortex fast-spiking γ-aminobutyric acidergic (GABAergic) interneuron (PV-IN) demonstrates how the Kv3.2-Cys125Tyr variant impairs neuronal excitability and dysregulates inhibition in cerebral cortex circuits to explain the resulting epilepsy. acknowledgement: This work was supported by an ERC Consolidator Grant (SYNAPSEEK) to T.P.V., the NOMIS Foundation through the NOMIS Fellowships program at IST Austria to C.B.C., a Jefferson Synaptic Biology Center Pilot Project Grant to M.C., NIH NINDS U54 NS108874 (PI, Alfred L. George), and NIH NINDS R01 NS122887 to E.M.G. The computations were enabled by resources provided by the Swedish National Infrastructure for Computing (SNIC) at the PDC Center for High-Performance Computing, KTH Royal Institute of Technology, partially funded by the Swedish Research Council through grant agreement no. 2018-05973. We thank Akshay Sridhar for the fruitful discussion of the project. article_number: e2307776121 article_processing_charge: No article_type: original author: - first_name: Jerome full_name: Clatot, Jerome last_name: Clatot - first_name: Christopher full_name: Currin, Christopher id: e8321fc5-3091-11eb-8a53-83f309a11ac9 last_name: Currin orcid: 0000-0002-4809-5059 - first_name: Qiansheng full_name: Liang, Qiansheng last_name: Liang - first_name: Tanadet full_name: Pipatpolkai, Tanadet last_name: Pipatpolkai - first_name: Shavonne L. full_name: Massey, Shavonne L. last_name: Massey - first_name: Ingo full_name: Helbig, Ingo last_name: Helbig - first_name: Lucie full_name: Delemotte, Lucie last_name: Delemotte - first_name: Tim P full_name: Vogels, Tim P id: CB6FF8D2-008F-11EA-8E08-2637E6697425 last_name: Vogels orcid: 0000-0003-3295-6181 - first_name: Manuel full_name: Covarrubias, Manuel last_name: Covarrubias - first_name: Ethan M. full_name: Goldberg, Ethan M. last_name: Goldberg citation: ama: Clatot J, Currin C, Liang Q, et al. A structurally precise mechanism links an epilepsy-associated KCNC2 potassium channel mutation to interneuron dysfunction. Proceedings of the National Academy of Sciences of the United States of America. 2024;121(3). doi:10.1073/pnas.2307776121 apa: Clatot, J., Currin, C., Liang, Q., Pipatpolkai, T., Massey, S. L., Helbig, I., … Goldberg, E. M. (2024). A structurally precise mechanism links an epilepsy-associated KCNC2 potassium channel mutation to interneuron dysfunction. Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2307776121 chicago: Clatot, Jerome, Christopher Currin, Qiansheng Liang, Tanadet Pipatpolkai, Shavonne L. Massey, Ingo Helbig, Lucie Delemotte, Tim P Vogels, Manuel Covarrubias, and Ethan M. Goldberg. “A Structurally Precise Mechanism Links an Epilepsy-Associated KCNC2 Potassium Channel Mutation to Interneuron Dysfunction.” Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences, 2024. https://doi.org/10.1073/pnas.2307776121. ieee: J. Clatot et al., “A structurally precise mechanism links an epilepsy-associated KCNC2 potassium channel mutation to interneuron dysfunction,” Proceedings of the National Academy of Sciences of the United States of America, vol. 121, no. 3. Proceedings of the National Academy of Sciences, 2024. ista: Clatot J, Currin C, Liang Q, Pipatpolkai T, Massey SL, Helbig I, Delemotte L, Vogels TP, Covarrubias M, Goldberg EM. 2024. A structurally precise mechanism links an epilepsy-associated KCNC2 potassium channel mutation to interneuron dysfunction. Proceedings of the National Academy of Sciences of the United States of America. 121(3), e2307776121. mla: Clatot, Jerome, et al. “A Structurally Precise Mechanism Links an Epilepsy-Associated KCNC2 Potassium Channel Mutation to Interneuron Dysfunction.” Proceedings of the National Academy of Sciences of the United States of America, vol. 121, no. 3, e2307776121, Proceedings of the National Academy of Sciences, 2024, doi:10.1073/pnas.2307776121. short: J. Clatot, C. Currin, Q. Liang, T. Pipatpolkai, S.L. Massey, I. Helbig, L. Delemotte, T.P. Vogels, M. Covarrubias, E.M. Goldberg, Proceedings of the National Academy of Sciences of the United States of America 121 (2024). date_created: 2024-01-21T23:00:56Z date_published: 2024-01-16T00:00:00Z date_updated: 2024-01-23T10:20:40Z day: '16' department: - _id: TiVo doi: 10.1073/pnas.2307776121 ec_funded: 1 external_id: pmid: - '38194456' intvolume: ' 121' issue: '3' language: - iso: eng month: '01' oa_version: None pmid: 1 project: - _id: 0aacfa84-070f-11eb-9043-d7eb2c709234 call_identifier: H2020 grant_number: '819603' name: Learning the shape of synaptic plasticity rules for neuronal architectures and function through machine learning. publication: Proceedings of the National Academy of Sciences of the United States of America publication_identifier: eissn: - 1091-6490 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' related_material: link: - relation: software url: 'https://github.com/ChrisCurrin/pv-kcnc2 ' scopus_import: '1' status: public title: A structurally precise mechanism links an epilepsy-associated KCNC2 potassium channel mutation to interneuron dysfunction type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 121 year: '2024' ... --- _id: '15001' abstract: - lang: eng text: "Self-replication of amyloid fibrils via secondary nucleation is an intriguing physicochemical phenomenon in which existing fibrils catalyze the formation of their own copies. The molecular events behind this fibril surface-mediated process remain largely inaccessible to current structural and imaging techniques. Using statistical mechanics, computer modeling, and chemical kinetics, we show that the catalytic structure of the fibril surface can be inferred from the aggregation behavior in the presence and absence of a fibril-binding inhibitor. We apply our approach to the case of Alzheimer’s A\r\n amyloid fibrils formed in the presence of proSP-C Brichos inhibitors. We find that self-replication of A\r\n fibrils occurs on small catalytic sites on the fibril surface, which are far apart from each other, and each of which can be covered by a single Brichos inhibitor." acknowledgement: We acknowledge support from the Erasmus programme and the University College London Institute for the Physics of Living Systems (S.C., T.C.T.M., A.Š.), the Biotechnology and Biological Sciences Research Council (T.P.J.K.), the Engineering and Physical Sciences Research Council (D.F.), the European Research Council (T.P.J.K., S.L., D.F., and A.Š.), the Frances and Augustus Newman Foundation (T.P.J.K.), the Academy of Medical Sciences and Wellcome Trust (A.Š.), and the Royal Society (S.C. and A.Š.). article_number: e2220075121 article_processing_charge: Yes article_type: original author: - first_name: Samo full_name: Curk, Samo id: 031eff0d-d481-11ee-8508-cd12a7a86e5b last_name: Curk orcid: 0000-0001-6160-9766 - first_name: Johannes full_name: Krausser, Johannes last_name: Krausser - first_name: Georg full_name: Meisl, Georg last_name: Meisl - first_name: Daan full_name: Frenkel, Daan last_name: Frenkel - first_name: Sara full_name: Linse, Sara last_name: Linse - first_name: Thomas C.T. full_name: Michaels, Thomas C.T. last_name: Michaels - first_name: Tuomas P.J. full_name: Knowles, Tuomas P.J. last_name: Knowles - first_name: Anđela full_name: Šarić, Anđela id: bf63d406-f056-11eb-b41d-f263a6566d8b last_name: Šarić orcid: 0000-0002-7854-2139 citation: ama: Curk S, Krausser J, Meisl G, et al. Self-replication of Aβ42 aggregates occurs on small and isolated fibril sites. Proceedings of the National Academy of Sciences of the United States of America. 2024;121(7). doi:10.1073/pnas.2220075121 apa: Curk, S., Krausser, J., Meisl, G., Frenkel, D., Linse, S., Michaels, T. C. T., … Šarić, A. (2024). Self-replication of Aβ42 aggregates occurs on small and isolated fibril sites. Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2220075121 chicago: Curk, Samo, Johannes Krausser, Georg Meisl, Daan Frenkel, Sara Linse, Thomas C.T. Michaels, Tuomas P.J. Knowles, and Anđela Šarić. “Self-Replication of Aβ42 Aggregates Occurs on Small and Isolated Fibril Sites.” Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences, 2024. https://doi.org/10.1073/pnas.2220075121. ieee: S. Curk et al., “Self-replication of Aβ42 aggregates occurs on small and isolated fibril sites,” Proceedings of the National Academy of Sciences of the United States of America, vol. 121, no. 7. Proceedings of the National Academy of Sciences, 2024. ista: Curk S, Krausser J, Meisl G, Frenkel D, Linse S, Michaels TCT, Knowles TPJ, Šarić A. 2024. Self-replication of Aβ42 aggregates occurs on small and isolated fibril sites. Proceedings of the National Academy of Sciences of the United States of America. 121(7), e2220075121. mla: Curk, Samo, et al. “Self-Replication of Aβ42 Aggregates Occurs on Small and Isolated Fibril Sites.” Proceedings of the National Academy of Sciences of the United States of America, vol. 121, no. 7, e2220075121, Proceedings of the National Academy of Sciences, 2024, doi:10.1073/pnas.2220075121. short: S. Curk, J. Krausser, G. Meisl, D. Frenkel, S. Linse, T.C.T. Michaels, T.P.J. Knowles, A. Šarić, Proceedings of the National Academy of Sciences of the United States of America 121 (2024). date_created: 2024-02-18T23:01:00Z date_published: 2024-02-13T00:00:00Z date_updated: 2024-02-26T08:45:56Z day: '13' ddc: - '570' department: - _id: AnSa doi: 10.1073/pnas.2220075121 ec_funded: 1 external_id: pmid: - '38335256' file: - access_level: open_access checksum: 5aeb65bcc0dd829b1f9ab307c5031d4b content_type: application/pdf creator: dernst date_created: 2024-02-26T08:20:00Z date_updated: 2024-02-26T08:20:00Z file_id: '15026' file_name: 2024_PNAS_Curk.pdf file_size: 7699487 relation: main_file success: 1 file_date_updated: 2024-02-26T08:20:00Z has_accepted_license: '1' intvolume: ' 121' issue: '7' language: - iso: eng license: https://creativecommons.org/licenses/by-nc-nd/4.0/ month: '02' oa: 1 oa_version: Published Version pmid: 1 project: - _id: eba2549b-77a9-11ec-83b8-a81e493eae4e call_identifier: H2020 grant_number: '802960' name: 'Non-Equilibrium Protein Assembly: from Building Blocks to Biological Machines' publication: Proceedings of the National Academy of Sciences of the United States of America publication_identifier: eissn: - 1091-6490 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' related_material: record: - id: '15027' relation: research_data status: public scopus_import: '1' status: public title: Self-replication of Aβ42 aggregates occurs on small and isolated fibril sites tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 121 year: '2024' ... --- _id: '15084' abstract: - lang: eng text: "GABAB receptor (GBR) activation inhibits neurotransmitter release in axon terminals in the brain, except in medial habenula (MHb) terminals, which show robust potentiation. However, mechanisms underlying this enigmatic potentiation remain elusive. Here, we report that GBR activation on MHb terminals induces an activity-dependent transition from a facilitating, tonic to a depressing, phasic neurotransmitter release mode. This transition is accompanied by a 4.1-fold increase in readily releasable vesicle pool (RRP) size and a 3.5-fold increase of docked synaptic vesicles (SVs) at the presynaptic active zone (AZ). Strikingly, the depressing phasic release exhibits looser coupling distance than the tonic release. Furthermore, the tonic and phasic release are selectively affected by deletion of synaptoporin (SPO) and Ca\r\n 2+\r\n -dependent activator protein for secretion 2 (CAPS2), respectively. SPO modulates augmentation, the short-term plasticity associated with tonic release, and CAPS2 retains the increased RRP for initial responses in phasic response trains. The cytosolic protein CAPS2 showed a SV-associated distribution similar to the vesicular transmembrane protein SPO, and they were colocalized in the same terminals. We developed the “Flash and Freeze-fracture” method, and revealed the release of SPO-associated vesicles in both tonic and phasic modes and activity-dependent recruitment of CAPS2 to the AZ during phasic release, which lasted several minutes. Overall, these results indicate that GBR activation translocates CAPS2 to the AZ along with the fusion of CAPS2-associated SVs, contributing to persistency of the RRP increase. Thus, we identified structural and molecular mechanisms underlying tonic and phasic neurotransmitter release and their transition by GBR activation in MHb terminals." acknowledged_ssus: - _id: M-Shop - _id: PreCl - _id: EM-Fac acknowledgement: We thank Erwin Neher and Ipe Ninan for critical comments on the manuscript. This project has received funding from the European Research Council (ERC) and European Commission, under the European Union’s Horizon 2020 research and innovation program (ERC grant agreement no. 694539 to R.S. and the Marie Skłodowska-Curie grant agreement no. 665385 to C.Ö.). This study was supported by the Cooperative Study Program of Center for Animal Resources and Collaborative Study of NINS. We thank Kohgaku Eguchi for statistical analysis, Yu Kasugai for additional EM imaging, Robert Beattie for the design of the slice recovery chamber for Flash and Freeze experiments, Todor Asenov from the ISTA machine shop for custom part preparations for high-pressure freezing, the ISTA preclinical facility for animal caretaking, and the ISTA EM facilities for technical support. article_number: e2301449121 article_processing_charge: Yes (in subscription journal) article_type: original author: - first_name: Peter full_name: Koppensteiner, Peter id: 3B8B25A8-F248-11E8-B48F-1D18A9856A87 last_name: Koppensteiner orcid: 0000-0002-3509-1948 - first_name: Pradeep full_name: Bhandari, Pradeep id: 45EDD1BC-F248-11E8-B48F-1D18A9856A87 last_name: Bhandari orcid: 0000-0003-0863-4481 - first_name: Hüseyin C full_name: Önal, Hüseyin C id: 4659D740-F248-11E8-B48F-1D18A9856A87 last_name: Önal orcid: 0000-0002-2771-2011 - first_name: Carolina full_name: Borges Merjane, Carolina id: 4305C450-F248-11E8-B48F-1D18A9856A87 last_name: Borges Merjane orcid: 0000-0003-0005-401X - first_name: Elodie full_name: Le Monnier, Elodie id: 3B59276A-F248-11E8-B48F-1D18A9856A87 last_name: Le Monnier - first_name: Utsa full_name: Roy, Utsa id: 4d26cf11-5355-11ee-ae5a-eb05e255b9b2 last_name: Roy - first_name: Yukihiro full_name: Nakamura, Yukihiro last_name: Nakamura - first_name: Tetsushi full_name: Sadakata, Tetsushi last_name: Sadakata - first_name: Makoto full_name: Sanbo, Makoto last_name: Sanbo - first_name: Masumi full_name: Hirabayashi, Masumi last_name: Hirabayashi - first_name: JeongSeop full_name: Rhee, JeongSeop last_name: Rhee - first_name: Nils full_name: Brose, Nils last_name: Brose - first_name: Peter M full_name: Jonas, Peter M id: 353C1B58-F248-11E8-B48F-1D18A9856A87 last_name: Jonas orcid: 0000-0001-5001-4804 - first_name: Ryuichi full_name: Shigemoto, Ryuichi id: 499F3ABC-F248-11E8-B48F-1D18A9856A87 last_name: Shigemoto orcid: 0000-0001-8761-9444 citation: ama: Koppensteiner P, Bhandari P, Önal C, et al. GABAB receptors induce phasic release from medial habenula terminals through activity-dependent recruitment of release-ready vesicles. Proceedings of the National Academy of Sciences. 2024;121(8). doi:10.1073/pnas.2301449121 apa: Koppensteiner, P., Bhandari, P., Önal, C., Borges Merjane, C., Le Monnier, E., Roy, U., … Shigemoto, R. (2024). GABAB receptors induce phasic release from medial habenula terminals through activity-dependent recruitment of release-ready vesicles. Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2301449121 chicago: Koppensteiner, Peter, Pradeep Bhandari, Cihan Önal, Carolina Borges Merjane, Elodie Le Monnier, Utsa Roy, Yukihiro Nakamura, et al. “GABAB Receptors Induce Phasic Release from Medial Habenula Terminals through Activity-Dependent Recruitment of Release-Ready Vesicles.” Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences, 2024. https://doi.org/10.1073/pnas.2301449121. ieee: P. Koppensteiner et al., “GABAB receptors induce phasic release from medial habenula terminals through activity-dependent recruitment of release-ready vesicles,” Proceedings of the National Academy of Sciences, vol. 121, no. 8. Proceedings of the National Academy of Sciences, 2024. ista: Koppensteiner P, Bhandari P, Önal C, Borges Merjane C, Le Monnier E, Roy U, Nakamura Y, Sadakata T, Sanbo M, Hirabayashi M, Rhee J, Brose N, Jonas PM, Shigemoto R. 2024. GABAB receptors induce phasic release from medial habenula terminals through activity-dependent recruitment of release-ready vesicles. Proceedings of the National Academy of Sciences. 121(8), e2301449121. mla: Koppensteiner, Peter, et al. “GABAB Receptors Induce Phasic Release from Medial Habenula Terminals through Activity-Dependent Recruitment of Release-Ready Vesicles.” Proceedings of the National Academy of Sciences, vol. 121, no. 8, e2301449121, Proceedings of the National Academy of Sciences, 2024, doi:10.1073/pnas.2301449121. short: P. Koppensteiner, P. Bhandari, C. Önal, C. Borges Merjane, E. Le Monnier, U. Roy, Y. Nakamura, T. Sadakata, M. Sanbo, M. Hirabayashi, J. Rhee, N. Brose, P.M. Jonas, R. Shigemoto, Proceedings of the National Academy of Sciences 121 (2024). date_created: 2024-03-05T09:23:55Z date_published: 2024-02-20T00:00:00Z date_updated: 2024-03-12T13:44:18Z day: '20' ddc: - '570' department: - _id: RySh - _id: PeJo doi: 10.1073/pnas.2301449121 ec_funded: 1 external_id: pmid: - '38346189' file: - access_level: open_access checksum: b25b2a057c266ff317a48b0d54d6fc8a content_type: application/pdf creator: dernst date_created: 2024-03-12T13:42:42Z date_updated: 2024-03-12T13:42:42Z file_id: '15110' file_name: 2024_PNAS_Koppensteiner.pdf file_size: 13648221 relation: main_file success: 1 file_date_updated: 2024-03-12T13:42:42Z has_accepted_license: '1' intvolume: ' 121' issue: '8' language: - iso: eng month: '02' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 25CA28EA-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '694539' name: 'In situ analysis of single channel subunit composition in neurons: physiological implication in synaptic plasticity and behaviour' - _id: 2564DBCA-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '665385' name: International IST Doctoral Program publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' related_material: link: - description: News on ISTA Website relation: press_release url: https://ista.ac.at/en/news/neuronal-insights-flash-and-freeze-fracture/ record: - id: '13173' relation: research_data status: public status: public title: GABAB receptors induce phasic release from medial habenula terminals through activity-dependent recruitment of release-ready vesicles tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 121 year: '2024' ... --- _id: '15083' abstract: - lang: eng text: 'Direct reciprocity is a powerful mechanism for cooperation in social dilemmas. The very logic of reciprocity, however, seems to require that individuals are symmetric, and that everyone has the same means to influence each others’ payoffs. Yet in many applications, individuals are asymmetric. Herein, we study the effect of asymmetry in linear public good games. Individuals may differ in their endowments (their ability to contribute to a public good) and in their productivities (how effective their contributions are). Given the individuals’ productivities, we ask which allocation of endowments is optimal for cooperation. To this end, we consider two notions of optimality. The first notion focuses on the resilience of cooperation. The respective endowment distribution ensures that full cooperation is feasible even under the most adverse conditions. The second notion focuses on efficiency. The corresponding endowment distribution maximizes group welfare. Using analytical methods, we fully characterize these two endowment distributions. This analysis reveals that both optimality notions favor some endowment inequality: More productive players ought to get higher endowments. Yet the two notions disagree on how unequal endowments are supposed to be. A focus on resilience results in less inequality. With additional simulations, we show that the optimal endowment allocation needs to account for both the resilience and the efficiency of cooperation.' acknowledgement: 'This work was supported by the European Research Council CoG 863818 (ForM-SMArt) (to K.C.) and the European Research Council Starting Grant 850529: E-DIRECT (to C.H.), the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement #754411 and the French Agence Nationale de la Recherche (under the Investissement d’Avenir Programme, ANR-17-EURE-0010) (to M.K.).' article_number: e2315558121 article_processing_charge: Yes (in subscription journal) article_type: original author: - first_name: Valentin full_name: Hübner, Valentin id: 2c8aa207-dc7d-11ea-9b2f-f22972ecd910 last_name: Hübner - first_name: Manuel full_name: Staab, Manuel last_name: Staab - first_name: Christian full_name: Hilbe, Christian id: 2FDF8F3C-F248-11E8-B48F-1D18A9856A87 last_name: Hilbe orcid: 0000-0001-5116-955X - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Maria full_name: Kleshnina, Maria last_name: Kleshnina citation: ama: Hübner V, Staab M, Hilbe C, Chatterjee K, Kleshnina M. Efficiency and resilience of cooperation in asymmetric social dilemmas. Proceedings of the National Academy of Sciences. 2024;121(10). doi:10.1073/pnas.2315558121 apa: Hübner, V., Staab, M., Hilbe, C., Chatterjee, K., & Kleshnina, M. (2024). Efficiency and resilience of cooperation in asymmetric social dilemmas. Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2315558121 chicago: Hübner, Valentin, Manuel Staab, Christian Hilbe, Krishnendu Chatterjee, and Maria Kleshnina. “Efficiency and Resilience of Cooperation in Asymmetric Social Dilemmas.” Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences, 2024. https://doi.org/10.1073/pnas.2315558121. ieee: V. Hübner, M. Staab, C. Hilbe, K. Chatterjee, and M. Kleshnina, “Efficiency and resilience of cooperation in asymmetric social dilemmas,” Proceedings of the National Academy of Sciences, vol. 121, no. 10. Proceedings of the National Academy of Sciences, 2024. ista: Hübner V, Staab M, Hilbe C, Chatterjee K, Kleshnina M. 2024. Efficiency and resilience of cooperation in asymmetric social dilemmas. Proceedings of the National Academy of Sciences. 121(10), e2315558121. mla: Hübner, Valentin, et al. “Efficiency and Resilience of Cooperation in Asymmetric Social Dilemmas.” Proceedings of the National Academy of Sciences, vol. 121, no. 10, e2315558121, Proceedings of the National Academy of Sciences, 2024, doi:10.1073/pnas.2315558121. short: V. Hübner, M. Staab, C. Hilbe, K. Chatterjee, M. Kleshnina, Proceedings of the National Academy of Sciences 121 (2024). date_created: 2024-03-05T09:18:49Z date_published: 2024-03-05T00:00:00Z date_updated: 2024-03-12T13:29:25Z day: '05' ddc: - '000' department: - _id: KrCh doi: 10.1073/pnas.2315558121 ec_funded: 1 external_id: pmid: - '38408249' file: - access_level: open_access checksum: 068520e3efd4d008bb9177e8aedb7d22 content_type: application/pdf creator: dernst date_created: 2024-03-12T13:12:22Z date_updated: 2024-03-12T13:12:22Z file_id: '15109' file_name: 2024_PNAS_Huebner.pdf file_size: 2203220 relation: main_file success: 1 file_date_updated: 2024-03-12T13:12:22Z has_accepted_license: '1' intvolume: ' 121' issue: '10' language: - iso: eng month: '03' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 0599E47C-7A3F-11EA-A408-12923DDC885E call_identifier: H2020 grant_number: '863818' name: 'Formal Methods for Stochastic Models: Algorithms and Applications' - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' related_material: link: - description: News on ISTA Website relation: press_release url: https://ista.ac.at/en/news/what-math-tells-us-about-social-dilemmas/ record: - id: '15108' relation: research_data status: public status: public title: Efficiency and resilience of cooperation in asymmetric social dilemmas tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 121 year: '2024' ... --- _id: '14478' abstract: - lang: eng text: Entire chromosomes are typically only transmitted vertically from one generation to the next. The horizontal transfer of such chromosomes has long been considered improbable, yet gained recent support in several pathogenic fungi where it may affect the fitness or host specificity. To date, it is unknown how these transfers occur, how common they are and whether they can occur between different species. In this study, we show multiple independent instances of horizontal transfers of the same accessory chromosome between two distinct strains of the asexual entomopathogenic fungusMetarhizium robertsiiduring experimental co-infection of its insect host, the Argentine ant. Notably, only the one chromosome – but no other – was transferred from the donor to the recipient strain. The recipient strain, now harboring the accessory chromosome, exhibited a competitive advantage under certain host conditions. By phylogenetic analysis we further demonstrate that the same accessory chromosome was horizontally transferred in a natural environment betweenM. robertsiiand another congeneric insect pathogen,M. guizhouense. Hence horizontal chromosome transfer is not limited to the observed frequent events within species during experimental infections but also occurs naturally across species. The transferred accessory chromosome contains genes that might be involved in its preferential horizontal transfer, encoding putative histones and histone-modifying enzymes, but also putative virulence factors that may support its establishment. Our study reveals that both intra- and interspecies horizontal transfer of entire chromosomes is more frequent than previously assumed, likely representing a not uncommon mechanism for gene exchange.Significance StatementThe enormous success of bacterial pathogens has been attributed to their ability to exchange genetic material between one another. Similarly, in eukaryotes, horizontal transfer of genetic material allowed the spread of virulence factors across species. The horizontal transfer of whole chromosomes could be an important pathway for such exchange of genetic material, but little is known about the origin of transferable chromosomes and how frequently they are exchanged. Here, we show that the transfer of accessory chromosomes - chromosomes that are non-essential but may provide fitness benefits - is common during fungal co-infections and is even possible between distant pathogenic species, highlighting the importance of horizontal gene transfer via chromosome transfer also for the evolution and function of eukaryotic pathogens. acknowledgement: We thank Bernhardt Steinwender, Jorgen Eilenberg, and Nicolai V. Meyling for the fungal strains. We further thank Chengshu Wang for providing the short sequencing reads for M. guizhouense ARESF977 he used for his published genome assembly, and Kristian Ullrich for help in the bioinformatics analysis for methylation pattern in Nanopore reads, and the VBC and the Max Planck Society for the use of their sequencing centers. We thank Barbara Milutinović and Hinrich Schulenburg for discussion, and Tal Dagan and Jens Rolff for comments on a previous version of the manuscript. Fig. 1A was created with BioRender.com. This study received funding by the European Research Council under the European Union’s Horizon 2020 Research and Innovation Programme (No. 771402; EPIDEMICSonCHIP) to S.C. and by the German Research Foundation (DFG grant HA9263/1-1) to M.H. article_number: e2316284121 article_processing_charge: Yes (in subscription journal) article_type: original author: - first_name: Michael full_name: Habig, Michael last_name: Habig - first_name: Anna V full_name: Grasse, Anna V id: 406F989C-F248-11E8-B48F-1D18A9856A87 last_name: Grasse - first_name: Judith full_name: Müller, Judith last_name: Müller - first_name: Eva H. full_name: Stukenbrock, Eva H. last_name: Stukenbrock - first_name: Hanna full_name: Leitner, Hanna id: 8fc5c6f6-5903-11ec-abad-c83f046253e7 last_name: Leitner - first_name: Sylvia full_name: Cremer, Sylvia id: 2F64EC8C-F248-11E8-B48F-1D18A9856A87 last_name: Cremer orcid: 0000-0002-2193-3868 citation: ama: Habig M, Grasse AV, Müller J, Stukenbrock EH, Leitner H, Cremer S. Frequent horizontal chromosome transfer between asexual fungal insect pathogens. Proceedings of the National Academy of Sciences of the United States of America. 2024;121(11). doi:10.1073/pnas.2316284121 apa: Habig, M., Grasse, A. V., Müller, J., Stukenbrock, E. H., Leitner, H., & Cremer, S. (2024). Frequent horizontal chromosome transfer between asexual fungal insect pathogens. Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2316284121 chicago: Habig, Michael, Anna V Grasse, Judith Müller, Eva H. Stukenbrock, Hanna Leitner, and Sylvia Cremer. “Frequent Horizontal Chromosome Transfer between Asexual Fungal Insect Pathogens.” Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences, 2024. https://doi.org/10.1073/pnas.2316284121. ieee: M. Habig, A. V. Grasse, J. Müller, E. H. Stukenbrock, H. Leitner, and S. Cremer, “Frequent horizontal chromosome transfer between asexual fungal insect pathogens,” Proceedings of the National Academy of Sciences of the United States of America, vol. 121, no. 11. Proceedings of the National Academy of Sciences, 2024. ista: Habig M, Grasse AV, Müller J, Stukenbrock EH, Leitner H, Cremer S. 2024. Frequent horizontal chromosome transfer between asexual fungal insect pathogens. Proceedings of the National Academy of Sciences of the United States of America. 121(11), e2316284121. mla: Habig, Michael, et al. “Frequent Horizontal Chromosome Transfer between Asexual Fungal Insect Pathogens.” Proceedings of the National Academy of Sciences of the United States of America, vol. 121, no. 11, e2316284121, Proceedings of the National Academy of Sciences, 2024, doi:10.1073/pnas.2316284121. short: M. Habig, A.V. Grasse, J. Müller, E.H. Stukenbrock, H. Leitner, S. Cremer, Proceedings of the National Academy of Sciences of the United States of America 121 (2024). date_created: 2023-10-31T13:30:00Z date_published: 2024-03-12T00:00:00Z date_updated: 2024-03-19T09:07:20Z day: '12' ddc: - '570' department: - _id: SyCr doi: 10.1073/pnas.2316284121 ec_funded: 1 external_id: pmid: - '38442176' file: - access_level: open_access checksum: f5e871db617b682edc71fcd08670dc81 content_type: application/pdf creator: dernst date_created: 2024-03-19T09:02:57Z date_updated: 2024-03-19T09:02:57Z file_id: '15124' file_name: 2024_PNAS_Habig.pdf file_size: 5750361 relation: main_file success: 1 file_date_updated: 2024-03-19T09:02:57Z has_accepted_license: '1' intvolume: ' 121' issue: '11' language: - iso: eng month: '03' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 2649B4DE-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '771402' name: Epidemics in ant societies on a chip publication: Proceedings of the National Academy of Sciences of the United States of America publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Frequent horizontal chromosome transfer between asexual fungal insect pathogens tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 121 year: '2024' ... --- _id: '15116' abstract: - lang: eng text: Water is known to play an important role in collagen self-assembly, but it is still largely unclear how water–collagen interactions influence the assembly process and determine the fibril network properties. Here, we use the H2O/D2O isotope effect on the hydrogen-bond strength in water to investigate the role of hydration in collagen self-assembly. We dissolve collagen in H2O and D2O and compare the growth kinetics and the structure of the collagen assemblies formed in these water isotopomers. Surprisingly, collagen assembly occurs ten times faster in D2O than in H2O, and collagen in D2O self-assembles into much thinner fibrils, that form a more inhomogeneous and softer network, with a fourfold reduction in elastic modulus when compared to H2O. Combining spectroscopic measurements with atomistic simulations, we show that collagen in D2O is less hydrated than in H2O. This partial dehydration lowers the enthalpic penalty for water removal and reorganization at the collagen–water interface, increasing the self-assembly rate and the number of nucleation centers, leading to thinner fibrils and a softer network. Coarse-grained simulations show that the acceleration in the initial nucleation rate can be reproduced by the enhancement of electrostatic interactions. These results show that water acts as a mediator between collagen monomers, by modulating their interactions so as to optimize the assembly process and, thus, the final network properties. We believe that isotopically modulating the hydration of proteins can be a valuable method to investigate the role of water in protein structural dynamics and protein self-assembly. acknowledgement: We thank Dr. Steven Roeters (Aarhus University), Dr. Federica Burla, and Prof. Dr. Mischa Bonn (Institute for Polymer Research, Mainz, Germany) for the useful discussions. We thank Dr. Wim Roeterdink and Michiel Hilberts for technical support. G.H.K. acknowledges financial support by the “BaSyC Building a Synthetic Cell” Gravitation grant (024.003.019) of The Netherlands Ministry of Education, Culture and Science (OCW) and The Netherlands Organization for Scientific Research and from NWO grant OCENW.GROOT.2019.022. This work has received support from the National Research Foundation of Korea (NRF), funded by the Ministry of Science and ICT, under Grant No. 2022K1A3A1A04062969. This publication is part of the project (with Project Number VI.Veni.212.240) of the research programme NWO Talent Programme Veni 2021, which is financed by the Dutch Research Council (NWO). I.M.I. acknowledges support from the Sectorplan Bèta & Techniek of the Dutch Government and the Dementia Research - Synapsis Foundation Switzerland. A.Š. and K.K. acknowledge support from Royal Society and European Research Council Starting Grant. G. Giubertoni kindly thanks to the Care4Bones community and the Collagen Café community for reminding that we do not own the knowledge we create, but it is, rather, a collective resource intended for the advancement of human progress. article_number: e2313162121 article_processing_charge: Yes (in subscription journal) article_type: original author: - first_name: Giulia full_name: Giubertoni, Giulia last_name: Giubertoni - first_name: Liru full_name: Feng, Liru last_name: Feng - first_name: Kevin full_name: Klein, Kevin last_name: Klein - first_name: Guido full_name: Giannetti, Guido last_name: Giannetti - first_name: Luco full_name: Rutten, Luco last_name: Rutten - first_name: Yeji full_name: Choi, Yeji last_name: Choi - first_name: Anouk full_name: Van Der Net, Anouk last_name: Van Der Net - first_name: Gerard full_name: Castro-Linares, Gerard last_name: Castro-Linares - first_name: Federico full_name: Caporaletti, Federico last_name: Caporaletti - first_name: Dimitra full_name: Micha, Dimitra last_name: Micha - first_name: Johannes full_name: Hunger, Johannes last_name: Hunger - first_name: Antoine full_name: Deblais, Antoine last_name: Deblais - first_name: Daniel full_name: Bonn, Daniel last_name: Bonn - first_name: Nico full_name: Sommerdijk, Nico last_name: Sommerdijk - first_name: Anđela full_name: Šarić, Anđela id: bf63d406-f056-11eb-b41d-f263a6566d8b last_name: Šarić orcid: 0000-0002-7854-2139 - first_name: Ioana M. full_name: Ilie, Ioana M. last_name: Ilie - first_name: Gijsje H. full_name: Koenderink, Gijsje H. last_name: Koenderink - first_name: Sander full_name: Woutersen, Sander last_name: Woutersen citation: ama: Giubertoni G, Feng L, Klein K, et al. Elucidating the role of water in collagen self-assembly by isotopically modulating collagen hydration. Proceedings of the National Academy of Sciences of the United States of America. 2024;121(11). doi:10.1073/pnas.2313162121 apa: Giubertoni, G., Feng, L., Klein, K., Giannetti, G., Rutten, L., Choi, Y., … Woutersen, S. (2024). Elucidating the role of water in collagen self-assembly by isotopically modulating collagen hydration. Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2313162121 chicago: Giubertoni, Giulia, Liru Feng, Kevin Klein, Guido Giannetti, Luco Rutten, Yeji Choi, Anouk Van Der Net, et al. “Elucidating the Role of Water in Collagen Self-Assembly by Isotopically Modulating Collagen Hydration.” Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences, 2024. https://doi.org/10.1073/pnas.2313162121. ieee: G. Giubertoni et al., “Elucidating the role of water in collagen self-assembly by isotopically modulating collagen hydration,” Proceedings of the National Academy of Sciences of the United States of America, vol. 121, no. 11. Proceedings of the National Academy of Sciences, 2024. ista: Giubertoni G, Feng L, Klein K, Giannetti G, Rutten L, Choi Y, Van Der Net A, Castro-Linares G, Caporaletti F, Micha D, Hunger J, Deblais A, Bonn D, Sommerdijk N, Šarić A, Ilie IM, Koenderink GH, Woutersen S. 2024. Elucidating the role of water in collagen self-assembly by isotopically modulating collagen hydration. Proceedings of the National Academy of Sciences of the United States of America. 121(11), e2313162121. mla: Giubertoni, Giulia, et al. “Elucidating the Role of Water in Collagen Self-Assembly by Isotopically Modulating Collagen Hydration.” Proceedings of the National Academy of Sciences of the United States of America, vol. 121, no. 11, e2313162121, Proceedings of the National Academy of Sciences, 2024, doi:10.1073/pnas.2313162121. short: G. Giubertoni, L. Feng, K. Klein, G. Giannetti, L. Rutten, Y. Choi, A. Van Der Net, G. Castro-Linares, F. Caporaletti, D. Micha, J. Hunger, A. Deblais, D. Bonn, N. Sommerdijk, A. Šarić, I.M. Ilie, G.H. Koenderink, S. Woutersen, Proceedings of the National Academy of Sciences of the United States of America 121 (2024). date_created: 2024-03-17T23:00:57Z date_published: 2024-03-12T00:00:00Z date_updated: 2024-03-19T11:41:32Z day: '12' ddc: - '550' department: - _id: AnSa doi: 10.1073/pnas.2313162121 external_id: pmid: - '38451946' file: - access_level: open_access checksum: a3f7fdc29dd9f0a38952ab4e322b3a05 content_type: application/pdf creator: dernst date_created: 2024-03-19T10:22:42Z date_updated: 2024-03-19T10:22:42Z file_id: '15125' file_name: 2024_PNAS_Giubertoni.pdf file_size: 12952586 relation: main_file success: 1 file_date_updated: 2024-03-19T10:22:42Z has_accepted_license: '1' intvolume: ' 121' issue: '11' language: - iso: eng license: https://creativecommons.org/licenses/by/4.0/ month: '03' oa: 1 oa_version: Published Version pmid: 1 publication: Proceedings of the National Academy of Sciences of the United States of America publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' related_material: record: - id: '15126' relation: research_data status: public scopus_import: '1' status: public title: Elucidating the role of water in collagen self-assembly by isotopically modulating collagen hydration tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 121 year: '2024' ... --- _id: '13315' abstract: - lang: eng text: How do statistical dependencies in measurement noise influence high-dimensional inference? To answer this, we study the paradigmatic spiked matrix model of principal components analysis (PCA), where a rank-one matrix is corrupted by additive noise. We go beyond the usual independence assumption on the noise entries, by drawing the noise from a low-order polynomial orthogonal matrix ensemble. The resulting noise correlations make the setting relevant for applications but analytically challenging. We provide characterization of the Bayes optimal limits of inference in this model. If the spike is rotation invariant, we show that standard spectral PCA is optimal. However, for more general priors, both PCA and the existing approximate message-passing algorithm (AMP) fall short of achieving the information-theoretic limits, which we compute using the replica method from statistical physics. We thus propose an AMP, inspired by the theory of adaptive Thouless–Anderson–Palmer equations, which is empirically observed to saturate the conjectured theoretical limit. This AMP comes with a rigorous state evolution analysis tracking its performance. Although we focus on specific noise distributions, our methodology can be generalized to a wide class of trace matrix ensembles at the cost of more involved expressions. Finally, despite the seemingly strong assumption of rotation-invariant noise, our theory empirically predicts algorithmic performance on real data, pointing at strong universality properties. acknowledgement: J.B. was funded by the European Union (ERC, CHORAL, project number 101039794). Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Research Council. Neither the European Union nor the granting authority can be held responsible for them. M.M. was supported by the 2019 Lopez-Loreta Prize. We would like to thank the reviewers for the insightful comments and, in particular, for suggesting the BAMP-inspired denoisers leading to AMP-AP. article_number: e2302028120 article_processing_charge: Yes (in subscription journal) article_type: original author: - first_name: Jean full_name: Barbier, Jean last_name: Barbier - first_name: Francesco full_name: Camilli, Francesco last_name: Camilli - first_name: Marco full_name: Mondelli, Marco id: 27EB676C-8706-11E9-9510-7717E6697425 last_name: Mondelli orcid: 0000-0002-3242-7020 - first_name: Manuel full_name: Sáenz, Manuel last_name: Sáenz citation: ama: Barbier J, Camilli F, Mondelli M, Sáenz M. Fundamental limits in structured principal component analysis and how to reach them. Proceedings of the National Academy of Sciences of the United States of America. 2023;120(30). doi:10.1073/pnas.2302028120 apa: Barbier, J., Camilli, F., Mondelli, M., & Sáenz, M. (2023). Fundamental limits in structured principal component analysis and how to reach them. Proceedings of the National Academy of Sciences of the United States of America. National Academy of Sciences. https://doi.org/10.1073/pnas.2302028120 chicago: Barbier, Jean, Francesco Camilli, Marco Mondelli, and Manuel Sáenz. “Fundamental Limits in Structured Principal Component Analysis and How to Reach Them.” Proceedings of the National Academy of Sciences of the United States of America. National Academy of Sciences, 2023. https://doi.org/10.1073/pnas.2302028120. ieee: J. Barbier, F. Camilli, M. Mondelli, and M. Sáenz, “Fundamental limits in structured principal component analysis and how to reach them,” Proceedings of the National Academy of Sciences of the United States of America, vol. 120, no. 30. National Academy of Sciences, 2023. ista: Barbier J, Camilli F, Mondelli M, Sáenz M. 2023. Fundamental limits in structured principal component analysis and how to reach them. Proceedings of the National Academy of Sciences of the United States of America. 120(30), e2302028120. mla: Barbier, Jean, et al. “Fundamental Limits in Structured Principal Component Analysis and How to Reach Them.” Proceedings of the National Academy of Sciences of the United States of America, vol. 120, no. 30, e2302028120, National Academy of Sciences, 2023, doi:10.1073/pnas.2302028120. short: J. Barbier, F. Camilli, M. Mondelli, M. Sáenz, Proceedings of the National Academy of Sciences of the United States of America 120 (2023). date_created: 2023-07-30T22:01:02Z date_published: 2023-07-25T00:00:00Z date_updated: 2023-10-17T11:44:55Z day: '25' ddc: - '000' department: - _id: MaMo doi: 10.1073/pnas.2302028120 external_id: pmid: - '37463204' file: - access_level: open_access checksum: 1fc06228afdb3aa80cf8e7766bcf9dc5 content_type: application/pdf creator: dernst date_created: 2023-07-31T07:30:48Z date_updated: 2023-07-31T07:30:48Z file_id: '13323' file_name: 2023_PNAS_Barbier.pdf file_size: 995933 relation: main_file success: 1 file_date_updated: 2023-07-31T07:30:48Z has_accepted_license: '1' intvolume: ' 120' issue: '30' language: - iso: eng month: '07' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 059876FA-7A3F-11EA-A408-12923DDC885E name: Prix Lopez-Loretta 2019 - Marco Mondelli publication: Proceedings of the National Academy of Sciences of the United States of America publication_identifier: eissn: - 1091-6490 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' related_material: link: - relation: software url: https://github.com/fcamilli95/Structured-PCA- scopus_import: '1' status: public title: Fundamental limits in structured principal component analysis and how to reach them tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 120 year: '2023' ... --- _id: '14037' abstract: - lang: eng text: 'Traditionally, nuclear spin is not considered to affect biological processes. Recently, this has changed as isotopic fractionation that deviates from classical mass dependence was reported both in vitro and in vivo. In these cases, the isotopic effect correlates with the nuclear magnetic spin. Here, we show nuclear spin effects using stable oxygen isotopes (16O, 17O, and 18O) in two separate setups: an artificial dioxygen production system and biological aquaporin channels in cells. We observe that oxygen dynamics in chiral environments (in particular its transport) depend on nuclear spin, suggesting future applications for controlled isotope separation to be used, for instance, in NMR. To demonstrate the mechanism behind our findings, we formulate theoretical models based on a nuclear-spin-enhanced switch between electronic spin states. Accounting for the role of nuclear spin in biology can provide insights into the role of quantum effects in living systems and help inspire the development of future biotechnology solutions.' acknowledgement: N.M.-S. acknowledges the support of the Ministry of Energy, Israel, as part of the scholarship program for graduate students in the fields of energy. M.L. acknowledges support by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). Y.P. acknowledges the support of the Ministry of Innovation, Science and Technology, Israel Grant No. 1001593872. Y.P acknowledges the support of the BSF-NSF 094 Grant No. 2022503. article_number: e2300828120 article_processing_charge: Yes (in subscription journal) article_type: original author: - first_name: Ofek full_name: Vardi, Ofek last_name: Vardi - first_name: Naama full_name: Maroudas-Sklare, Naama last_name: Maroudas-Sklare - first_name: Yuval full_name: Kolodny, Yuval last_name: Kolodny - first_name: Artem full_name: Volosniev, Artem id: 37D278BC-F248-11E8-B48F-1D18A9856A87 last_name: Volosniev orcid: 0000-0003-0393-5525 - first_name: Amijai full_name: Saragovi, Amijai last_name: Saragovi - first_name: Nir full_name: Galili, Nir last_name: Galili - first_name: Stav full_name: Ferrera, Stav last_name: Ferrera - first_name: Areg full_name: Ghazaryan, Areg id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87 last_name: Ghazaryan orcid: 0000-0001-9666-3543 - first_name: Nir full_name: Yuran, Nir last_name: Yuran - first_name: Hagit P. full_name: Affek, Hagit P. last_name: Affek - first_name: Boaz full_name: Luz, Boaz last_name: Luz - first_name: Yonaton full_name: Goldsmith, Yonaton last_name: Goldsmith - first_name: Nir full_name: Keren, Nir last_name: Keren - first_name: Shira full_name: Yochelis, Shira last_name: Yochelis - first_name: Itay full_name: Halevy, Itay last_name: Halevy - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 - first_name: Yossi full_name: Paltiel, Yossi last_name: Paltiel citation: ama: Vardi O, Maroudas-Sklare N, Kolodny Y, et al. Nuclear spin effects in biological processes. Proceedings of the National Academy of Sciences of the United States of America. 2023;120(32). doi:10.1073/pnas.2300828120 apa: Vardi, O., Maroudas-Sklare, N., Kolodny, Y., Volosniev, A., Saragovi, A., Galili, N., … Paltiel, Y. (2023). Nuclear spin effects in biological processes. Proceedings of the National Academy of Sciences of the United States of America. National Academy of Sciences. https://doi.org/10.1073/pnas.2300828120 chicago: Vardi, Ofek, Naama Maroudas-Sklare, Yuval Kolodny, Artem Volosniev, Amijai Saragovi, Nir Galili, Stav Ferrera, et al. “Nuclear Spin Effects in Biological Processes.” Proceedings of the National Academy of Sciences of the United States of America. National Academy of Sciences, 2023. https://doi.org/10.1073/pnas.2300828120. ieee: O. Vardi et al., “Nuclear spin effects in biological processes,” Proceedings of the National Academy of Sciences of the United States of America, vol. 120, no. 32. National Academy of Sciences, 2023. ista: Vardi O, Maroudas-Sklare N, Kolodny Y, Volosniev A, Saragovi A, Galili N, Ferrera S, Ghazaryan A, Yuran N, Affek HP, Luz B, Goldsmith Y, Keren N, Yochelis S, Halevy I, Lemeshko M, Paltiel Y. 2023. Nuclear spin effects in biological processes. Proceedings of the National Academy of Sciences of the United States of America. 120(32), e2300828120. mla: Vardi, Ofek, et al. “Nuclear Spin Effects in Biological Processes.” Proceedings of the National Academy of Sciences of the United States of America, vol. 120, no. 32, e2300828120, National Academy of Sciences, 2023, doi:10.1073/pnas.2300828120. short: O. Vardi, N. Maroudas-Sklare, Y. Kolodny, A. Volosniev, A. Saragovi, N. Galili, S. Ferrera, A. Ghazaryan, N. Yuran, H.P. Affek, B. Luz, Y. Goldsmith, N. Keren, S. Yochelis, I. Halevy, M. Lemeshko, Y. Paltiel, Proceedings of the National Academy of Sciences of the United States of America 120 (2023). date_created: 2023-08-13T22:01:12Z date_published: 2023-07-31T00:00:00Z date_updated: 2023-10-17T11:45:25Z day: '31' ddc: - '530' department: - _id: MiLe doi: 10.1073/pnas.2300828120 ec_funded: 1 external_id: pmid: - '37523549' file: - access_level: open_access checksum: a5ed64788a5acef9b9a300a26fa5a177 content_type: application/pdf creator: dernst date_created: 2023-08-14T07:43:45Z date_updated: 2023-08-14T07:43:45Z file_id: '14047' file_name: 2023_PNAS_Vardi.pdf file_size: 1003092 relation: main_file success: 1 file_date_updated: 2023-08-14T07:43:45Z has_accepted_license: '1' intvolume: ' 120' issue: '32' language: - iso: eng month: '07' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication: Proceedings of the National Academy of Sciences of the United States of America publication_identifier: eissn: - 1091-6490 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Nuclear spin effects in biological processes tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 120 year: '2023' ... --- _id: '14666' abstract: - lang: eng text: So-called spontaneous activity is a central hallmark of most nervous systems. Such non-causal firing is contrary to the tenet of spikes as a means of communication, and its purpose remains unclear. We propose that self-initiated firing can serve as a release valve to protect neurons from the toxic conditions arising in mitochondria from lower-than-baseline energy consumption. To demonstrate the viability of our hypothesis, we built a set of models that incorporate recent experimental results indicating homeostatic control of metabolic products—Adenosine triphosphate (ATP), adenosine diphosphate (ADP), and reactive oxygen species (ROS)—by changes in firing. We explore the relationship of metabolic cost of spiking with its effect on the temporal patterning of spikes and reproduce experimentally observed changes in intrinsic firing in the fruitfly dorsal fan-shaped body neuron in a model with ROS-modulated potassium channels. We also show that metabolic spiking homeostasis can produce indefinitely sustained avalanche dynamics in cortical circuits. Our theory can account for key features of neuronal activity observed in many studies ranging from ion channel function all the way to resting state dynamics. We finish with a set of experimental predictions that would confirm an integrated, crucial role for metabolically regulated spiking and firmly link metabolic homeostasis and neuronal function. acknowledgement: We thank Prof. C. Nazaret and Prof. J.-P. Mazat for sharing the code of their mitochondrial model. We also thank G. Miesenböck, E. Marder, L. Abbott, A. Kempf, P. Hasenhuetl, W. Podlaski, F. Zenke, E. Agnes, P. Bozelos, J. Watson, B. Confavreux, and G. Christodoulou, and the rest of the Vogels Lab for their feedback. This work was funded by Wellcome Trust and Royal Society Sir Henry Dale Research Fellowship (WT100000), a Wellcome Trust Senior Research Fellowship (214316/Z/18/Z), and a UK Research and Innovation, Biotechnology and Biological Sciences Research Council grant (UKRI-BBSRC BB/N019512/1). article_number: e2306525120 article_processing_charge: Yes (in subscription journal) article_type: original author: - first_name: Chaitanya full_name: Chintaluri, Chaitanya id: E4EDB536-3485-11EA-98D2-20AF3DDC885E last_name: Chintaluri - first_name: Tim P full_name: Vogels, Tim P id: CB6FF8D2-008F-11EA-8E08-2637E6697425 last_name: Vogels orcid: 0000-0003-3295-6181 citation: ama: Chintaluri C, Vogels TP. Metabolically regulated spiking could serve neuronal energy homeostasis and protect from reactive oxygen species. Proceedings of the National Academy of Sciences of the United States of America. 2023;120(48). doi:10.1073/pnas.2306525120 apa: Chintaluri, C., & Vogels, T. P. (2023). Metabolically regulated spiking could serve neuronal energy homeostasis and protect from reactive oxygen species. Proceedings of the National Academy of Sciences of the United States of America. National Academy of Sciences. https://doi.org/10.1073/pnas.2306525120 chicago: Chintaluri, Chaitanya, and Tim P Vogels. “Metabolically Regulated Spiking Could Serve Neuronal Energy Homeostasis and Protect from Reactive Oxygen Species.” Proceedings of the National Academy of Sciences of the United States of America. National Academy of Sciences, 2023. https://doi.org/10.1073/pnas.2306525120. ieee: C. Chintaluri and T. P. Vogels, “Metabolically regulated spiking could serve neuronal energy homeostasis and protect from reactive oxygen species,” Proceedings of the National Academy of Sciences of the United States of America, vol. 120, no. 48. National Academy of Sciences, 2023. ista: Chintaluri C, Vogels TP. 2023. Metabolically regulated spiking could serve neuronal energy homeostasis and protect from reactive oxygen species. Proceedings of the National Academy of Sciences of the United States of America. 120(48), e2306525120. mla: Chintaluri, Chaitanya, and Tim P. Vogels. “Metabolically Regulated Spiking Could Serve Neuronal Energy Homeostasis and Protect from Reactive Oxygen Species.” Proceedings of the National Academy of Sciences of the United States of America, vol. 120, no. 48, e2306525120, National Academy of Sciences, 2023, doi:10.1073/pnas.2306525120. short: C. Chintaluri, T.P. Vogels, Proceedings of the National Academy of Sciences of the United States of America 120 (2023). date_created: 2023-12-10T23:01:00Z date_published: 2023-11-21T00:00:00Z date_updated: 2023-12-11T12:47:41Z day: '21' ddc: - '570' department: - _id: TiVo doi: 10.1073/pnas.2306525120 external_id: pmid: - '37988463' file: - access_level: open_access checksum: bf4ec38602a70dae4338077a5a4d497f content_type: application/pdf creator: dernst date_created: 2023-12-11T12:45:12Z date_updated: 2023-12-11T12:45:12Z file_id: '14678' file_name: 2023_PNAS_Chintaluri.pdf file_size: 16891602 relation: main_file success: 1 file_date_updated: 2023-12-11T12:45:12Z has_accepted_license: '1' intvolume: ' 120' issue: '48' language: - iso: eng month: '11' oa: 1 oa_version: None pmid: 1 project: - _id: c084a126-5a5b-11eb-8a69-d75314a70a87 grant_number: 214316/Z/18/Z name: What’s in a memory? Spatiotemporal dynamics in strongly coupled recurrent neuronal networks. publication: Proceedings of the National Academy of Sciences of the United States of America publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' related_material: link: - relation: software url: https://github.com/ccluri/metabolic_spiking scopus_import: '1' status: public title: Metabolically regulated spiking could serve neuronal energy homeostasis and protect from reactive oxygen species tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 120 year: '2023' ... --- _id: '13201' abstract: - lang: eng text: As a crucial nitrogen source, nitrate (NO3−) is a key nutrient for plants. Accordingly, root systems adapt to maximize NO3− availability, a developmental regulation also involving the phytohormone auxin. Nonetheless, the molecular mechanisms underlying this regulation remain poorly understood. Here, we identify low-nitrate-resistant mutant (lonr) in Arabidopsis (Arabidopsis thaliana), whose root growth fails to adapt to low-NO3− conditions. lonr2 is defective in the high-affinity NO3− transporter NRT2.1. lonr2 (nrt2.1) mutants exhibit defects in polar auxin transport, and their low-NO3−-induced root phenotype depends on the PIN7 auxin exporter activity. NRT2.1 directly associates with PIN7 and antagonizes PIN7-mediated auxin efflux depending on NO3− levels. These results reveal a mechanism by which NRT2.1 in response to NO3− limitation directly regulates auxin transport activity and, thus, root growth. This adaptive mechanism contributes to the root developmental plasticity to help plants cope with changes in NO3− availability. acknowledgement: We are grateful to Caifu Jiang for providing ethyl metha-nesulfonate- mutagenized population, Yi Wang for providing Xenopus oocytes, Jun Fan and Zhaosheng Kong for providing tobacco BY- 2 cells, and Claus Schwechheimer, Alain Gojon, and Shutang Tan for helpful discussions. This work was supported by the National Key Research and Development Program of China (2021YFF1000500), the National Natural Science Foundation of China (32170265 and 32022007), Hainan Provincial Natural Science Foundation of China (323CXTD379), Chinese Universities Scientific Fund (2023TC019), Beijing Municipal Natural Science Foundation (5192011), Beijing Outstanding University Discipline Program, and China Postdoctoral Science Foundation (BH2020259460). article_number: e2221313120 article_processing_charge: No article_type: original author: - first_name: Yalu full_name: Wang, Yalu last_name: Wang - first_name: Zhi full_name: Yuan, Zhi last_name: Yuan - first_name: Jinyi full_name: Wang, Jinyi last_name: Wang - first_name: Huixin full_name: Xiao, Huixin last_name: Xiao - first_name: Lu full_name: Wan, Lu last_name: Wan - first_name: Lanxin full_name: Li, Lanxin id: 367EF8FA-F248-11E8-B48F-1D18A9856A87 last_name: Li orcid: 0000-0002-5607-272X - first_name: Yan full_name: Guo, Yan last_name: Guo - first_name: Zhizhong full_name: Gong, Zhizhong last_name: Gong - first_name: Jiří full_name: Friml, Jiří id: 4159519E-F248-11E8-B48F-1D18A9856A87 last_name: Friml orcid: 0000-0002-8302-7596 - first_name: Jing full_name: Zhang, Jing last_name: Zhang citation: ama: Wang Y, Yuan Z, Wang J, et al. The nitrate transporter NRT2.1 directly antagonizes PIN7-mediated auxin transport for root growth adaptation. Proceedings of the National Academy of Sciences of the United States of America. 2023;120(25). doi:10.1073/pnas.2221313120 apa: Wang, Y., Yuan, Z., Wang, J., Xiao, H., Wan, L., Li, L., … Zhang, J. (2023). The nitrate transporter NRT2.1 directly antagonizes PIN7-mediated auxin transport for root growth adaptation. Proceedings of the National Academy of Sciences of the United States of America. National Academy of Sciences. https://doi.org/10.1073/pnas.2221313120 chicago: Wang, Yalu, Zhi Yuan, Jinyi Wang, Huixin Xiao, Lu Wan, Lanxin Li, Yan Guo, Zhizhong Gong, Jiří Friml, and Jing Zhang. “The Nitrate Transporter NRT2.1 Directly Antagonizes PIN7-Mediated Auxin Transport for Root Growth Adaptation.” Proceedings of the National Academy of Sciences of the United States of America. National Academy of Sciences, 2023. https://doi.org/10.1073/pnas.2221313120. ieee: Y. Wang et al., “The nitrate transporter NRT2.1 directly antagonizes PIN7-mediated auxin transport for root growth adaptation,” Proceedings of the National Academy of Sciences of the United States of America, vol. 120, no. 25. National Academy of Sciences, 2023. ista: Wang Y, Yuan Z, Wang J, Xiao H, Wan L, Li L, Guo Y, Gong Z, Friml J, Zhang J. 2023. The nitrate transporter NRT2.1 directly antagonizes PIN7-mediated auxin transport for root growth adaptation. Proceedings of the National Academy of Sciences of the United States of America. 120(25), e2221313120. mla: Wang, Yalu, et al. “The Nitrate Transporter NRT2.1 Directly Antagonizes PIN7-Mediated Auxin Transport for Root Growth Adaptation.” Proceedings of the National Academy of Sciences of the United States of America, vol. 120, no. 25, e2221313120, National Academy of Sciences, 2023, doi:10.1073/pnas.2221313120. short: Y. Wang, Z. Yuan, J. Wang, H. Xiao, L. Wan, L. Li, Y. Guo, Z. Gong, J. Friml, J. Zhang, Proceedings of the National Academy of Sciences of the United States of America 120 (2023). date_created: 2023-07-09T22:01:12Z date_published: 2023-06-12T00:00:00Z date_updated: 2023-12-13T23:30:04Z day: '12' ddc: - '570' department: - _id: JiFr doi: 10.1073/pnas.2221313120 external_id: isi: - '001030689600003' pmid: - '37307446' file: - access_level: open_access checksum: d800e06252eaefba28531fa9440f23f0 content_type: application/pdf creator: alisjak date_created: 2023-07-10T08:48:40Z date_updated: 2023-12-13T23:30:03Z embargo: 2023-12-12 file_id: '13204' file_name: 2023_PNAS_Wang.pdf file_size: 5244581 relation: main_file file_date_updated: 2023-12-13T23:30:03Z has_accepted_license: '1' intvolume: ' 120' isi: 1 issue: '25' language: - iso: eng month: '06' oa: 1 oa_version: Published Version pmid: 1 publication: Proceedings of the National Academy of Sciences of the United States of America publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: The nitrate transporter NRT2.1 directly antagonizes PIN7-mediated auxin transport for root growth adaptation tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 120 year: '2023' ... --- _id: '11702' abstract: - lang: eng text: When Mendel’s work was rediscovered in 1900, and extended to establish classical genetics, it was initially seen in opposition to Darwin’s theory of evolution by natural selection on continuous variation, as represented by the biometric research program that was the foundation of quantitative genetics. As Fisher, Haldane, and Wright established a century ago, Mendelian inheritance is exactly what is needed for natural selection to work efficiently. Yet, the synthesis remains unfinished. We do not understand why sexual reproduction and a fair meiosis predominate in eukaryotes, or how far these are responsible for their diversity and complexity. Moreover, although quantitative geneticists have long known that adaptive variation is highly polygenic, and that this is essential for efficient selection, this is only now becoming appreciated by molecular biologists—and we still do not have a good framework for understanding polygenic variation or diffuse function. acknowledgement: I thank Laura Hayward, Jitka Polechova, and Anja Westram for discussions and comments. article_number: e2122147119 article_processing_charge: No article_type: original author: - first_name: Nicholas H full_name: Barton, Nicholas H id: 4880FE40-F248-11E8-B48F-1D18A9856A87 last_name: Barton orcid: 0000-0002-8548-5240 citation: ama: Barton NH. The “New Synthesis.” Proceedings of the National Academy of Sciences of the United States of America. 2022;119(30). doi:10.1073/pnas.2122147119 apa: Barton, N. H. (2022). The “New Synthesis.” Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2122147119 chicago: Barton, Nicholas H. “The ‘New Synthesis.’” Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences, 2022. https://doi.org/10.1073/pnas.2122147119. ieee: N. H. Barton, “The ‘New Synthesis,’” Proceedings of the National Academy of Sciences of the United States of America, vol. 119, no. 30. Proceedings of the National Academy of Sciences, 2022. ista: Barton NH. 2022. The ‘New Synthesis’. Proceedings of the National Academy of Sciences of the United States of America. 119(30), e2122147119. mla: Barton, Nicholas H. “The ‘New Synthesis.’” Proceedings of the National Academy of Sciences of the United States of America, vol. 119, no. 30, e2122147119, Proceedings of the National Academy of Sciences, 2022, doi:10.1073/pnas.2122147119. short: N.H. Barton, Proceedings of the National Academy of Sciences of the United States of America 119 (2022). date_created: 2022-07-31T22:01:47Z date_published: 2022-07-18T00:00:00Z date_updated: 2022-08-01T11:00:25Z day: '18' ddc: - '570' department: - _id: NiBa doi: 10.1073/pnas.2122147119 external_id: pmid: - '35858408' file: - access_level: open_access checksum: 06c866196a8957f0c37b8a121771c885 content_type: application/pdf creator: dernst date_created: 2022-08-01T10:58:28Z date_updated: 2022-08-01T10:58:28Z file_id: '11716' file_name: 2022_PNAS_Barton.pdf file_size: 848511 relation: main_file success: 1 file_date_updated: 2022-08-01T10:58:28Z has_accepted_license: '1' intvolume: ' 119' issue: '30' language: - iso: eng month: '07' oa: 1 oa_version: Published Version pmid: 1 publication: Proceedings of the National Academy of Sciences of the United States of America publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: The "New Synthesis" tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 119 year: '2022' ... --- _id: '12577' abstract: - lang: eng text: Glaciers are key components of the mountain water towers of Asia and are vital for downstream domestic, agricultural, and industrial uses. The glacier mass loss rate over the southeastern Tibetan Plateau is among the highest in Asia and has accelerated in recent decades. This acceleration has been attributed to increased warming, but the mechanisms behind these glaciers’ high sensitivity to warming remain unclear, while the influence of changes in precipitation over the past decades is poorly quantified. Here, we reconstruct glacier mass changes and catchment runoff since 1975 at a benchmark glacier, Parlung No. 4, to shed light on the drivers of recent mass losses for the monsoonal, spring-accumulation glaciers of the Tibetan Plateau. Our modeling demonstrates how a temperature increase (mean of 0.39C ⋅dec−1since 1990) has accelerated mass loss rates by altering both the ablation and accumulation regimes in a complex manner. The majority of the post-2000 mass loss occurred during the monsoon months, caused by simultaneous decreases in the solid precipitation ratio (from 0.70 to 0.56) and precipitation amount (–10%), leading to reduced monsoon accumulation (–26%). Higher solid precipitation in spring (+18%) during the last two decades was increasingly important in mitigating glacier mass loss by providing mass to the glacier and protecting it from melting in the early monsoon. With bare ice exposed to warmer temperatures for longer periods, icemelt and catchment discharge have unsustainably intensified since the start of the 21st century, raising concerns for long-term water supply and hazard occurrence in the region. article_number: e2109796119 article_processing_charge: No article_type: original author: - first_name: Achille full_name: Jouberton, Achille last_name: Jouberton - first_name: Thomas E. full_name: Shaw, Thomas E. last_name: Shaw - first_name: Evan full_name: Miles, Evan last_name: Miles - first_name: Michael full_name: McCarthy, Michael last_name: McCarthy - first_name: Stefan full_name: Fugger, Stefan last_name: Fugger - first_name: Shaoting full_name: Ren, Shaoting last_name: Ren - first_name: Amaury full_name: Dehecq, Amaury last_name: Dehecq - first_name: Wei full_name: Yang, Wei last_name: Yang - first_name: Francesca full_name: Pellicciotti, Francesca id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70 last_name: Pellicciotti citation: ama: Jouberton A, Shaw TE, Miles E, et al. Warming-induced monsoon precipitation phase change intensifies glacier mass loss in the southeastern Tibetan Plateau. PNAS. 2022;119(37). doi:10.1073/pnas.2109796119 apa: Jouberton, A., Shaw, T. E., Miles, E., McCarthy, M., Fugger, S., Ren, S., … Pellicciotti, F. (2022). Warming-induced monsoon precipitation phase change intensifies glacier mass loss in the southeastern Tibetan Plateau. PNAS. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2109796119 chicago: Jouberton, Achille, Thomas E. Shaw, Evan Miles, Michael McCarthy, Stefan Fugger, Shaoting Ren, Amaury Dehecq, Wei Yang, and Francesca Pellicciotti. “Warming-Induced Monsoon Precipitation Phase Change Intensifies Glacier Mass Loss in the Southeastern Tibetan Plateau.” PNAS. Proceedings of the National Academy of Sciences, 2022. https://doi.org/10.1073/pnas.2109796119. ieee: A. Jouberton et al., “Warming-induced monsoon precipitation phase change intensifies glacier mass loss in the southeastern Tibetan Plateau,” PNAS, vol. 119, no. 37. Proceedings of the National Academy of Sciences, 2022. ista: Jouberton A, Shaw TE, Miles E, McCarthy M, Fugger S, Ren S, Dehecq A, Yang W, Pellicciotti F. 2022. Warming-induced monsoon precipitation phase change intensifies glacier mass loss in the southeastern Tibetan Plateau. PNAS. 119(37), e2109796119. mla: Jouberton, Achille, et al. “Warming-Induced Monsoon Precipitation Phase Change Intensifies Glacier Mass Loss in the Southeastern Tibetan Plateau.” PNAS, vol. 119, no. 37, e2109796119, Proceedings of the National Academy of Sciences, 2022, doi:10.1073/pnas.2109796119. short: A. Jouberton, T.E. Shaw, E. Miles, M. McCarthy, S. Fugger, S. Ren, A. Dehecq, W. Yang, F. Pellicciotti, PNAS 119 (2022). date_created: 2023-02-20T08:10:02Z date_published: 2022-09-06T00:00:00Z date_updated: 2023-02-28T13:50:37Z day: '06' doi: 10.1073/pnas.2109796119 extern: '1' intvolume: ' 119' issue: '37' keyword: - Multidisciplinary language: - iso: eng month: '09' oa_version: None publication: PNAS publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Warming-induced monsoon precipitation phase change intensifies glacier mass loss in the southeastern Tibetan Plateau type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 119 year: '2022' ... --- _id: '10888' abstract: - lang: eng text: Despite the growing interest in using chemical genetics in plant research, small molecule target identification remains a major challenge. The cellular thermal shift assay coupled with high-resolution mass spectrometry (CETSA MS) that monitors changes in the thermal stability of proteins caused by their interactions with small molecules, other proteins, or posttranslational modifications, allows the discovery of drug targets or the study of protein–metabolite and protein–protein interactions mainly in mammalian cells. To showcase the applicability of this method in plants, we applied CETSA MS to intact Arabidopsis thaliana cells and identified the thermal proteome of the plant-specific glycogen synthase kinase 3 (GSK3) inhibitor, bikinin. A comparison between the thermal and the phosphoproteomes of bikinin revealed the auxin efflux carrier PIN-FORMED1 (PIN1) as a substrate of the Arabidopsis GSK3s that negatively regulate the brassinosteroid signaling. We established that PIN1 phosphorylation by the GSK3s is essential for maintaining its intracellular polarity that is required for auxin-mediated regulation of vascular patterning in the leaf, thus revealing cross-talk between brassinosteroid and auxin signaling. acknowledgement: "We thank Yanhai Yin for providing the anti-BES1 antibody, Johan Winne and Brenda Callebaut for synthesizing bikinin, Yuki Kondo and Hiroo Fukuda for published materials, Tomasz Nodzy\x03nski for useful advice, and Martine De Cock for help in preparing the manuscript. This\r\nwork was supported by the China Scholarship Council for predoctoral (Q.L. and X.X.) and postdoctoral (Y.Z.) fellowships; the Agency for Innovation by Science and Technology for a predoctoral fellowship (W.D.); the Research Foundation-Flanders, Projects G009018N and G002121N (E.R.); and the VIB TechWatch Fund (E.R.)." article_number: e2118220119 article_processing_charge: No article_type: original author: - first_name: Qing full_name: Lu, Qing last_name: Lu - first_name: Yonghong full_name: Zhang, Yonghong last_name: Zhang - first_name: Joakim full_name: Hellner, Joakim last_name: Hellner - first_name: Caterina full_name: Giannini, Caterina id: e3fdddd5-f6e0-11ea-865d-ca99ee6367f4 last_name: Giannini - first_name: Xiangyu full_name: Xu, Xiangyu last_name: Xu - first_name: Jarne full_name: Pauwels, Jarne last_name: Pauwels - first_name: Qian full_name: Ma, Qian last_name: Ma - first_name: Wim full_name: Dejonghe, Wim last_name: Dejonghe - first_name: Huibin full_name: Han, Huibin id: 31435098-F248-11E8-B48F-1D18A9856A87 last_name: Han - first_name: Brigitte full_name: Van De Cotte, Brigitte last_name: Van De Cotte - first_name: Francis full_name: Impens, Francis last_name: Impens - first_name: Kris full_name: Gevaert, Kris last_name: Gevaert - first_name: Ive full_name: De Smet, Ive last_name: De Smet - first_name: Jiří full_name: Friml, Jiří id: 4159519E-F248-11E8-B48F-1D18A9856A87 last_name: Friml orcid: 0000-0002-8302-7596 - first_name: Daniel Martinez full_name: Molina, Daniel Martinez last_name: Molina - first_name: Eugenia full_name: Russinova, Eugenia last_name: Russinova citation: ama: Lu Q, Zhang Y, Hellner J, et al. Proteome-wide cellular thermal shift assay reveals unexpected cross-talk between brassinosteroid and auxin signaling. Proceedings of the National Academy of Sciences of the United States of America. 2022;119(11). doi:10.1073/pnas.2118220119 apa: Lu, Q., Zhang, Y., Hellner, J., Giannini, C., Xu, X., Pauwels, J., … Russinova, E. (2022). Proteome-wide cellular thermal shift assay reveals unexpected cross-talk between brassinosteroid and auxin signaling. Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2118220119 chicago: Lu, Qing, Yonghong Zhang, Joakim Hellner, Caterina Giannini, Xiangyu Xu, Jarne Pauwels, Qian Ma, et al. “Proteome-Wide Cellular Thermal Shift Assay Reveals Unexpected Cross-Talk between Brassinosteroid and Auxin Signaling.” Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences, 2022. https://doi.org/10.1073/pnas.2118220119. ieee: Q. Lu et al., “Proteome-wide cellular thermal shift assay reveals unexpected cross-talk between brassinosteroid and auxin signaling,” Proceedings of the National Academy of Sciences of the United States of America, vol. 119, no. 11. Proceedings of the National Academy of Sciences, 2022. ista: Lu Q, Zhang Y, Hellner J, Giannini C, Xu X, Pauwels J, Ma Q, Dejonghe W, Han H, Van De Cotte B, Impens F, Gevaert K, De Smet I, Friml J, Molina DM, Russinova E. 2022. Proteome-wide cellular thermal shift assay reveals unexpected cross-talk between brassinosteroid and auxin signaling. Proceedings of the National Academy of Sciences of the United States of America. 119(11), e2118220119. mla: Lu, Qing, et al. “Proteome-Wide Cellular Thermal Shift Assay Reveals Unexpected Cross-Talk between Brassinosteroid and Auxin Signaling.” Proceedings of the National Academy of Sciences of the United States of America, vol. 119, no. 11, e2118220119, Proceedings of the National Academy of Sciences, 2022, doi:10.1073/pnas.2118220119. short: Q. Lu, Y. Zhang, J. Hellner, C. Giannini, X. Xu, J. Pauwels, Q. Ma, W. Dejonghe, H. Han, B. Van De Cotte, F. Impens, K. Gevaert, I. De Smet, J. Friml, D.M. Molina, E. Russinova, Proceedings of the National Academy of Sciences of the United States of America 119 (2022). date_created: 2022-03-20T23:01:39Z date_published: 2022-03-07T00:00:00Z date_updated: 2023-08-03T06:06:27Z day: '07' ddc: - '580' department: - _id: JiFr doi: 10.1073/pnas.2118220119 external_id: isi: - '000771756300008' pmid: - '35254915' file: - access_level: open_access checksum: 83e0fea7919570d0b519b41193342571 content_type: application/pdf creator: dernst date_created: 2022-03-21T09:19:47Z date_updated: 2022-03-21T09:19:47Z file_id: '10910' file_name: 2022_PNAS_Lu.pdf file_size: 2169534 relation: main_file success: 1 file_date_updated: 2022-03-21T09:19:47Z has_accepted_license: '1' intvolume: ' 119' isi: 1 issue: '11' language: - iso: eng month: '03' oa: 1 oa_version: Published Version pmid: 1 publication: Proceedings of the National Academy of Sciences of the United States of America publication_identifier: eissn: - 1091-6490 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Proteome-wide cellular thermal shift assay reveals unexpected cross-talk between brassinosteroid and auxin signaling tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 119 year: '2022' ... --- _id: '11734' abstract: - lang: eng text: Mineral nutrition is one of the key environmental factors determining plant development and growth. Nitrate is the major form of macronutrient nitrogen that plants take up from the soil. Fluctuating availability or deficiency of this element severely limits plant growth and negatively affects crop production in the agricultural system. To cope with the heterogeneity of nitrate distribution in soil, plants evolved a complex regulatory mechanism that allows rapid adjustment of physiological and developmental processes to the status of this nutrient. The root, as a major exploitation organ that controls the uptake of nitrate to the plant body, acts as a regulatory hub that, according to nitrate availability, coordinates the growth and development of other plant organs. Here, we identified a regulatory framework, where cytokinin response factors (CRFs) play a central role as a molecular readout of the nitrate status in roots to guide shoot adaptive developmental response. We show that nitrate-driven activation of NLP7, a master regulator of nitrate response in plants, fine tunes biosynthesis of cytokinin in roots and its translocation to shoots where it enhances expression of CRFs. CRFs, through direct transcriptional regulation of PIN auxin transporters, promote the flow of auxin and thereby stimulate the development of shoot organs. acknowledged_ssus: - _id: Bio - _id: LifeSc acknowledgement: "We acknowledge Hana Semeradova, Juan Carlos Montesinos, Nicola Cavallari, Marc¸al Gallem\x03ı, Kaori Tabata, Andrej Hurn\x03y, and Sascha Waidmann for sharing materials; and Marina Borges Osorio for critical reading of the manuscript. Work in the E. Benkova laboratory was supported by the Austrian Science Fund (FWF01_I1774S) to K.O., R.A., and E. Benkova. We acknowledge the Bioimaging Facility and Life Science Facilities of the Institute of Science\r\nand Technology Austria. We give sincere thanks to Hana Martınkova and Petra Amakorova for their help with cytokinin analyses. This work was funded by the Czech Science Foundation (Project No. 19-00973S)." article_number: e2122460119 article_processing_charge: No article_type: original author: - first_name: Rashed full_name: Abualia, Rashed id: 4827E134-F248-11E8-B48F-1D18A9856A87 last_name: Abualia orcid: 0000-0002-9357-9415 - first_name: Krisztina full_name: Ötvös, Krisztina id: 29B901B0-F248-11E8-B48F-1D18A9856A87 last_name: Ötvös orcid: 0000-0002-5503-4983 - first_name: Ondřej full_name: Novák, Ondřej last_name: Novák - first_name: Eleonore full_name: Bouguyon, Eleonore last_name: Bouguyon - first_name: Kevin full_name: Domanegg, Kevin id: a24c7829-16e8-11ed-8527-c4d36ffb7539 last_name: Domanegg orcid: 0000-0002-1215-4264 - first_name: Anne full_name: Krapp, Anne last_name: Krapp - first_name: Philip full_name: Nacry, Philip last_name: Nacry - first_name: Alain full_name: Gojon, Alain last_name: Gojon - first_name: Benoit full_name: Lacombe, Benoit last_name: Lacombe - first_name: Eva full_name: Benková, Eva id: 38F4F166-F248-11E8-B48F-1D18A9856A87 last_name: Benková orcid: 0000-0002-8510-9739 citation: ama: Abualia R, Ötvös K, Novák O, et al. Molecular framework integrating nitrate sensing in root and auxin-guided shoot adaptive responses. Proceedings of the National Academy of Sciences of the United States of America. 2022;119(31). doi:10.1073/pnas.2122460119 apa: Abualia, R., Ötvös, K., Novák, O., Bouguyon, E., Domanegg, K., Krapp, A., … Benková, E. (2022). Molecular framework integrating nitrate sensing in root and auxin-guided shoot adaptive responses. Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2122460119 chicago: Abualia, Rashed, Krisztina Ötvös, Ondřej Novák, Eleonore Bouguyon, Kevin Domanegg, Anne Krapp, Philip Nacry, Alain Gojon, Benoit Lacombe, and Eva Benková. “Molecular Framework Integrating Nitrate Sensing in Root and Auxin-Guided Shoot Adaptive Responses.” Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences, 2022. https://doi.org/10.1073/pnas.2122460119. ieee: R. Abualia et al., “Molecular framework integrating nitrate sensing in root and auxin-guided shoot adaptive responses,” Proceedings of the National Academy of Sciences of the United States of America, vol. 119, no. 31. Proceedings of the National Academy of Sciences, 2022. ista: Abualia R, Ötvös K, Novák O, Bouguyon E, Domanegg K, Krapp A, Nacry P, Gojon A, Lacombe B, Benková E. 2022. Molecular framework integrating nitrate sensing in root and auxin-guided shoot adaptive responses. Proceedings of the National Academy of Sciences of the United States of America. 119(31), e2122460119. mla: Abualia, Rashed, et al. “Molecular Framework Integrating Nitrate Sensing in Root and Auxin-Guided Shoot Adaptive Responses.” Proceedings of the National Academy of Sciences of the United States of America, vol. 119, no. 31, e2122460119, Proceedings of the National Academy of Sciences, 2022, doi:10.1073/pnas.2122460119. short: R. Abualia, K. Ötvös, O. Novák, E. Bouguyon, K. Domanegg, A. Krapp, P. Nacry, A. Gojon, B. Lacombe, E. Benková, Proceedings of the National Academy of Sciences of the United States of America 119 (2022). date_created: 2022-08-07T22:01:57Z date_published: 2022-07-25T00:00:00Z date_updated: 2023-08-03T12:39:29Z day: '25' ddc: - '570' department: - _id: EvBe doi: 10.1073/pnas.2122460119 external_id: isi: - '000881496900007' pmid: - '35878040' file: - access_level: open_access checksum: 6e97dedc281247fc3fe238a209f14af0 content_type: application/pdf creator: dernst date_created: 2022-08-08T07:09:58Z date_updated: 2022-08-08T07:09:58Z file_id: '11744' file_name: 2022_PNAS_Abualia.pdf file_size: 3092330 relation: main_file success: 1 file_date_updated: 2022-08-08T07:09:58Z has_accepted_license: '1' intvolume: ' 119' isi: 1 issue: '31' language: - iso: eng month: '07' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 2542D156-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: I 1774-B16 name: Hormone cross-talk drives nutrient dependent plant development publication: Proceedings of the National Academy of Sciences of the United States of America publication_identifier: eissn: - 1091-6490 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Molecular framework integrating nitrate sensing in root and auxin-guided shoot adaptive responses tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 119 year: '2022' ... --- _id: '11733' abstract: - lang: eng text: Genetically informed, deep-phenotyped biobanks are an important research resource and it is imperative that the most powerful, versatile, and efficient analysis approaches are used. Here, we apply our recently developed Bayesian grouped mixture of regressions model (GMRM) in the UK and Estonian Biobanks and obtain the highest genomic prediction accuracy reported to date across 21 heritable traits. When compared to other approaches, GMRM accuracy was greater than annotation prediction models run in the LDAK or LDPred-funct software by 15% (SE 7%) and 14% (SE 2%), respectively, and was 18% (SE 3%) greater than a baseline BayesR model without single-nucleotide polymorphism (SNP) markers grouped into minor allele frequency–linkage disequilibrium (MAF-LD) annotation categories. For height, the prediction accuracy R2 was 47% in a UK Biobank holdout sample, which was 76% of the estimated h2SNP. We then extend our GMRM prediction model to provide mixed-linear model association (MLMA) SNP marker estimates for genome-wide association (GWAS) discovery, which increased the independent loci detected to 16,162 in unrelated UK Biobank individuals, compared to 10,550 from BoltLMM and 10,095 from Regenie, a 62 and 65% increase, respectively. The average χ2 value of the leading markers increased by 15.24 (SE 0.41) for every 1% increase in prediction accuracy gained over a baseline BayesR model across the traits. Thus, we show that modeling genetic associations accounting for MAF and LD differences among SNP markers, and incorporating prior knowledge of genomic function, is important for both genomic prediction and discovery in large-scale individual-level studies. acknowledgement: This project was funded by Swiss National Science Foundation Eccellenza Grant PCEGP3-181181(toM.R.R.) and by core funding from the Institute of Science and Technology Austria. P.M.V. acknowledges funding from the Australian National Health and Medical Research Council (1113400) and the Australian Research Council (FL180100072). K.L. and R.M. were supported by the Estonian Research Council Grant PRG687. Estonian Biobank computations were performed in the High-Performance Computing Centre, University of Tartu. article_number: e2121279119 article_processing_charge: No article_type: original author: - first_name: Etienne J. full_name: Orliac, Etienne J. last_name: Orliac - first_name: Daniel full_name: Trejo Banos, Daniel last_name: Trejo Banos - first_name: Sven E. full_name: Ojavee, Sven E. last_name: Ojavee - first_name: Kristi full_name: Läll, Kristi last_name: Läll - first_name: Reedik full_name: Mägi, Reedik last_name: Mägi - first_name: Peter M. full_name: Visscher, Peter M. last_name: Visscher - first_name: Matthew Richard full_name: Robinson, Matthew Richard id: E5D42276-F5DA-11E9-8E24-6303E6697425 last_name: Robinson orcid: 0000-0001-8982-8813 citation: ama: Orliac EJ, Trejo Banos D, Ojavee SE, et al. Improving GWAS discovery and genomic prediction accuracy in biobank data. Proceedings of the National Academy of Sciences of the United States of America. 2022;119(31). doi:10.1073/pnas.2121279119 apa: Orliac, E. J., Trejo Banos, D., Ojavee, S. E., Läll, K., Mägi, R., Visscher, P. M., & Robinson, M. R. (2022). Improving GWAS discovery and genomic prediction accuracy in biobank data. Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2121279119 chicago: Orliac, Etienne J., Daniel Trejo Banos, Sven E. Ojavee, Kristi Läll, Reedik Mägi, Peter M. Visscher, and Matthew Richard Robinson. “Improving GWAS Discovery and Genomic Prediction Accuracy in Biobank Data.” Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences, 2022. https://doi.org/10.1073/pnas.2121279119. ieee: E. J. Orliac et al., “Improving GWAS discovery and genomic prediction accuracy in biobank data,” Proceedings of the National Academy of Sciences of the United States of America, vol. 119, no. 31. Proceedings of the National Academy of Sciences, 2022. ista: Orliac EJ, Trejo Banos D, Ojavee SE, Läll K, Mägi R, Visscher PM, Robinson MR. 2022. Improving GWAS discovery and genomic prediction accuracy in biobank data. Proceedings of the National Academy of Sciences of the United States of America. 119(31), e2121279119. mla: Orliac, Etienne J., et al. “Improving GWAS Discovery and Genomic Prediction Accuracy in Biobank Data.” Proceedings of the National Academy of Sciences of the United States of America, vol. 119, no. 31, e2121279119, Proceedings of the National Academy of Sciences, 2022, doi:10.1073/pnas.2121279119. short: E.J. Orliac, D. Trejo Banos, S.E. Ojavee, K. Läll, R. Mägi, P.M. Visscher, M.R. Robinson, Proceedings of the National Academy of Sciences of the United States of America 119 (2022). date_created: 2022-08-07T22:01:56Z date_published: 2022-07-29T00:00:00Z date_updated: 2023-08-03T12:40:38Z day: '29' ddc: - '570' department: - _id: MaRo doi: 10.1073/pnas.2121279119 external_id: isi: - '000881496900003' file: - access_level: open_access checksum: b5d2024e19fbad6f85a5e384e44d0f3b content_type: application/pdf creator: dernst date_created: 2022-08-08T07:31:19Z date_updated: 2022-08-08T07:31:19Z file_id: '11745' file_name: 2022_PNAS_Orliac.pdf file_size: 1001164 relation: main_file success: 1 file_date_updated: 2022-08-08T07:31:19Z has_accepted_license: '1' intvolume: ' 119' isi: 1 issue: '31' language: - iso: eng month: '07' oa: 1 oa_version: Published Version publication: Proceedings of the National Academy of Sciences of the United States of America publication_identifier: eissn: - 1091-6490 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' related_material: record: - id: '13064' relation: research_data status: public scopus_import: '1' status: public title: Improving GWAS discovery and genomic prediction accuracy in biobank data tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 119 year: '2022' ... --- _id: '11723' abstract: - lang: eng text: Plant cell growth responds rapidly to various stimuli, adapting architecture to environmental changes. Two major endogenous signals regulating growth are the phytohormone auxin and the secreted peptides rapid alkalinization factors (RALFs). Both trigger very rapid cellular responses and also exert long-term effects [Du et al., Annu. Rev. Plant Biol. 71, 379–402 (2020); Blackburn et al., Plant Physiol. 182, 1657–1666 (2020)]. However, the way, in which these distinct signaling pathways converge to regulate growth, remains unknown. Here, using vertical confocal microscopy combined with a microfluidic chip, we addressed the mechanism of RALF action on growth. We observed correlation between RALF1-induced rapid Arabidopsis thaliana root growth inhibition and apoplast alkalinization during the initial phase of the response, and revealed that RALF1 reversibly inhibits primary root growth through apoplast alkalinization faster than within 1 min. This rapid apoplast alkalinization was the result of RALF1-induced net H+ influx and was mediated by the receptor FERONIA (FER). Furthermore, we investigated the cross-talk between RALF1 and the auxin signaling pathways during root growth regulation. The results showed that RALF-FER signaling triggered auxin signaling with a delay of approximately 1 h by up-regulating auxin biosynthesis, thus contributing to sustained RALF1-induced growth inhibition. This biphasic RALF1 action on growth allows plants to respond rapidly to environmental stimuli and also reprogram growth and development in the long term. acknowledgement: We thank Sarah M. Assmann, Kris Vissenberg, and Nadine Paris for kindly sharing seeds; Matyáš Fendrych for initiating this project and providing constant support; Lukas Fiedler for revising the manuscript; and Huibin Han and Arseny Savin for contributing to genotyping. This work was supported by the Austrian Science Fund (FWF) I 3630-B25 (to J.F.) and the Doctoral Fellowship Progrmme of the Austrian Academy of Sciences (to L.L.) We also acknowledge Taif University Researchers Supporting Project TURSP-HC2021/02 and funding “Plants as a tool for sustainable global development (no. CZ.02.1.01/0.0/0.0/16_019/0000827).” article_number: e2121058119 article_processing_charge: No article_type: original author: - first_name: Lanxin full_name: Li, Lanxin id: 367EF8FA-F248-11E8-B48F-1D18A9856A87 last_name: Li orcid: 0000-0002-5607-272X - first_name: Huihuang full_name: Chen, Huihuang id: 83c96512-15b2-11ec-abd3-b7eede36184f last_name: Chen - first_name: Saqer S. full_name: Alotaibi, Saqer S. last_name: Alotaibi - first_name: Aleš full_name: Pěnčík, Aleš last_name: Pěnčík - first_name: Maciek full_name: Adamowski, Maciek id: 45F536D2-F248-11E8-B48F-1D18A9856A87 last_name: Adamowski orcid: 0000-0001-6463-5257 - first_name: Ondřej full_name: Novák, Ondřej last_name: Novák - first_name: Jiří full_name: Friml, Jiří id: 4159519E-F248-11E8-B48F-1D18A9856A87 last_name: Friml orcid: 0000-0002-8302-7596 citation: ama: Li L, Chen H, Alotaibi SS, et al. RALF1 peptide triggers biphasic root growth inhibition upstream of auxin biosynthesis. Proceedings of the National Academy of Sciences. 2022;119(31). doi:10.1073/pnas.2121058119 apa: Li, L., Chen, H., Alotaibi, S. S., Pěnčík, A., Adamowski, M., Novák, O., & Friml, J. (2022). RALF1 peptide triggers biphasic root growth inhibition upstream of auxin biosynthesis. Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2121058119 chicago: Li, Lanxin, Huihuang Chen, Saqer S. Alotaibi, Aleš Pěnčík, Maciek Adamowski, Ondřej Novák, and Jiří Friml. “RALF1 Peptide Triggers Biphasic Root Growth Inhibition Upstream of Auxin Biosynthesis.” Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences, 2022. https://doi.org/10.1073/pnas.2121058119. ieee: L. Li et al., “RALF1 peptide triggers biphasic root growth inhibition upstream of auxin biosynthesis,” Proceedings of the National Academy of Sciences, vol. 119, no. 31. Proceedings of the National Academy of Sciences, 2022. ista: Li L, Chen H, Alotaibi SS, Pěnčík A, Adamowski M, Novák O, Friml J. 2022. RALF1 peptide triggers biphasic root growth inhibition upstream of auxin biosynthesis. Proceedings of the National Academy of Sciences. 119(31), e2121058119. mla: Li, Lanxin, et al. “RALF1 Peptide Triggers Biphasic Root Growth Inhibition Upstream of Auxin Biosynthesis.” Proceedings of the National Academy of Sciences, vol. 119, no. 31, e2121058119, Proceedings of the National Academy of Sciences, 2022, doi:10.1073/pnas.2121058119. short: L. Li, H. Chen, S.S. Alotaibi, A. Pěnčík, M. Adamowski, O. Novák, J. Friml, Proceedings of the National Academy of Sciences 119 (2022). date_created: 2022-08-04T20:06:49Z date_published: 2022-07-25T00:00:00Z date_updated: 2023-08-03T12:43:53Z day: '25' ddc: - '580' department: - _id: GradSch - _id: JiFr doi: 10.1073/pnas.2121058119 external_id: isi: - '000881496900002' pmid: - '35878023' file: - access_level: open_access checksum: ae6f19b0d9efba6687f9e4dc1bab1d6e content_type: application/pdf creator: dernst date_created: 2022-08-08T07:42:09Z date_updated: 2022-08-08T07:42:09Z file_id: '11747' file_name: 2022_PNAS_Li.pdf file_size: 2506262 relation: main_file success: 1 file_date_updated: 2022-08-08T07:42:09Z has_accepted_license: '1' intvolume: ' 119' isi: 1 issue: '31' keyword: - Multidisciplinary language: - iso: eng month: '07' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 26538374-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: I03630 name: Molecular mechanisms of endocytic cargo recognition in plants - _id: 26B4D67E-B435-11E9-9278-68D0E5697425 grant_number: '25351' name: 'A Case Study of Plant Growth Regulation: Molecular Mechanism of Auxin-mediated Rapid Growth Inhibition in Arabidopsis Root' publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: RALF1 peptide triggers biphasic root growth inhibition upstream of auxin biosynthesis tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 119 year: '2022' ... --- _id: '11841' abstract: - lang: eng text: Primary nucleation is the fundamental event that initiates the conversion of proteins from their normal physiological forms into pathological amyloid aggregates associated with the onset and development of disorders including systemic amyloidosis, as well as the neurodegenerative conditions Alzheimer’s and Parkinson’s diseases. It has become apparent that the presence of surfaces can dramatically modulate nucleation. However, the underlying physicochemical parameters governing this process have been challenging to elucidate, with interfaces in some cases having been found to accelerate aggregation, while in others they can inhibit the kinetics of this process. Here we show through kinetic analysis that for three different fibril-forming proteins, interfaces affect the aggregation reaction mainly through modulating the primary nucleation step. Moreover, we show through direct measurements of the Gibbs free energy of adsorption, combined with theory and coarse-grained computer simulations, that overall nucleation rates are suppressed at high and at low surface interaction strengths but significantly enhanced at intermediate strengths, and we verify these regimes experimentally. Taken together, these results provide a quantitative description of the fundamental process which triggers amyloid formation and shed light on the key factors that control this process. acknowledgement: "The research leading to these results has received funding from the European Research Council (ERC) under the European Union’s Seventh Framework Programme (FP7/2007-2013) through the ERC grant PhysProt\r\n(agreement 337969). We are grateful for financial support from the Biotechnology and Biological Sciences Research Council (BBSRC) (T.P.J.K.), the Newman\r\nFoundation (T.P.J.K.), the Wellcome Trust (T.P.J.K. and M.V.), Peterhouse College\r\nCambridge (T.C.T.M.), the ERC Starting Grant (StG) Non-Equilibrium Protein Assembly (NEPA) (A.S.), the Royal Society (A.S.), the Academy of Medical Sciences\r\n(A.S. and J.K.), and the Cambridge Centre for Misfolding Diseases (CMD)." article_number: e2109718119 article_processing_charge: No article_type: original author: - first_name: Zenon full_name: Toprakcioglu, Zenon last_name: Toprakcioglu - first_name: Ayaka full_name: Kamada, Ayaka last_name: Kamada - first_name: Thomas C.T. full_name: Michaels, Thomas C.T. last_name: Michaels - first_name: Mengqi full_name: Xie, Mengqi last_name: Xie - first_name: Johannes full_name: Krausser, Johannes last_name: Krausser - first_name: Jiapeng full_name: Wei, Jiapeng last_name: Wei - first_name: Anđela full_name: Šarić, Anđela id: bf63d406-f056-11eb-b41d-f263a6566d8b last_name: Šarić orcid: 0000-0002-7854-2139 - first_name: Michele full_name: Vendruscolo, Michele last_name: Vendruscolo - first_name: Tuomas P.J. full_name: Knowles, Tuomas P.J. last_name: Knowles citation: ama: Toprakcioglu Z, Kamada A, Michaels TCT, et al. Adsorption free energy predicts amyloid protein nucleation rates. Proceedings of the National Academy of Sciences of the United States of America. 2022;119(31). doi:10.1073/pnas.2109718119 apa: Toprakcioglu, Z., Kamada, A., Michaels, T. C. T., Xie, M., Krausser, J., Wei, J., … Knowles, T. P. J. (2022). Adsorption free energy predicts amyloid protein nucleation rates. Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2109718119 chicago: Toprakcioglu, Zenon, Ayaka Kamada, Thomas C.T. Michaels, Mengqi Xie, Johannes Krausser, Jiapeng Wei, Anđela Šarić, Michele Vendruscolo, and Tuomas P.J. Knowles. “Adsorption Free Energy Predicts Amyloid Protein Nucleation Rates.” Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences, 2022. https://doi.org/10.1073/pnas.2109718119. ieee: Z. Toprakcioglu et al., “Adsorption free energy predicts amyloid protein nucleation rates,” Proceedings of the National Academy of Sciences of the United States of America, vol. 119, no. 31. Proceedings of the National Academy of Sciences, 2022. ista: Toprakcioglu Z, Kamada A, Michaels TCT, Xie M, Krausser J, Wei J, Šarić A, Vendruscolo M, Knowles TPJ. 2022. Adsorption free energy predicts amyloid protein nucleation rates. Proceedings of the National Academy of Sciences of the United States of America. 119(31), e2109718119. mla: Toprakcioglu, Zenon, et al. “Adsorption Free Energy Predicts Amyloid Protein Nucleation Rates.” Proceedings of the National Academy of Sciences of the United States of America, vol. 119, no. 31, e2109718119, Proceedings of the National Academy of Sciences, 2022, doi:10.1073/pnas.2109718119. short: Z. Toprakcioglu, A. Kamada, T.C.T. Michaels, M. Xie, J. Krausser, J. Wei, A. Šarić, M. Vendruscolo, T.P.J. Knowles, Proceedings of the National Academy of Sciences of the United States of America 119 (2022). date_created: 2022-08-14T22:01:45Z date_published: 2022-07-28T00:00:00Z date_updated: 2023-10-04T09:06:52Z day: '28' ddc: - '570' department: - _id: AnSa doi: 10.1073/pnas.2109718119 ec_funded: 1 external_id: isi: - '000903753500002' file: - access_level: open_access checksum: 0fe3878896cbeb6c44e29222ec2f336a content_type: application/pdf creator: dernst date_created: 2023-10-04T09:05:44Z date_updated: 2023-10-04T09:05:44Z file_id: '14386' file_name: 2022_PNAS_Toprakcioglu.pdf file_size: 2476021 relation: main_file success: 1 file_date_updated: 2023-10-04T09:05:44Z has_accepted_license: '1' intvolume: ' 119' isi: 1 issue: '31' language: - iso: eng month: '07' oa: 1 oa_version: Published Version project: - _id: eba2549b-77a9-11ec-83b8-a81e493eae4e call_identifier: H2020 grant_number: '802960' name: 'Non-Equilibrium Protein Assembly: from Building Blocks to Biological Machines' publication: Proceedings of the National Academy of Sciences of the United States of America publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Adsorption free energy predicts amyloid protein nucleation rates tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 119 year: '2022' ... --- _id: '12081' abstract: - lang: eng text: 'Selection accumulates information in the genome—it guides stochastically evolving populations toward states (genotype frequencies) that would be unlikely under neutrality. This can be quantified as the Kullback–Leibler (KL) divergence between the actual distribution of genotype frequencies and the corresponding neutral distribution. First, we show that this population-level information sets an upper bound on the information at the level of genotype and phenotype, limiting how precisely they can be specified by selection. Next, we study how the accumulation and maintenance of information is limited by the cost of selection, measured as the genetic load or the relative fitness variance, both of which we connect to the control-theoretic KL cost of control. The information accumulation rate is upper bounded by the population size times the cost of selection. This bound is very general, and applies across models (Wright–Fisher, Moran, diffusion) and to arbitrary forms of selection, mutation, and recombination. Finally, the cost of maintaining information depends on how it is encoded: Specifying a single allele out of two is expensive, but one bit encoded among many weakly specified loci (as in a polygenic trait) is cheap.' acknowledgement: We thank Ksenia Khudiakova, Wiktor Młynarski, Sean Stankowski, and two anonymous reviewers for discussions and comments on the manuscript. G.T. and M.H. acknowledge funding from the Human Frontier Science Program Grant RGP0032/2018. N.B. acknowledges funding from ERC Grant 250152 “Information and Evolution.” article_number: e2123152119 article_processing_charge: No article_type: original author: - first_name: Michal full_name: Hledik, Michal id: 4171253A-F248-11E8-B48F-1D18A9856A87 last_name: Hledik - first_name: Nicholas H full_name: Barton, Nicholas H id: 4880FE40-F248-11E8-B48F-1D18A9856A87 last_name: Barton orcid: 0000-0002-8548-5240 - first_name: Gašper full_name: Tkačik, Gašper id: 3D494DCA-F248-11E8-B48F-1D18A9856A87 last_name: Tkačik orcid: '1' citation: ama: Hledik M, Barton NH, Tkačik G. Accumulation and maintenance of information in evolution. Proceedings of the National Academy of Sciences. 2022;119(36). doi:10.1073/pnas.2123152119 apa: Hledik, M., Barton, N. H., & Tkačik, G. (2022). Accumulation and maintenance of information in evolution. Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2123152119 chicago: Hledik, Michal, Nicholas H Barton, and Gašper Tkačik. “Accumulation and Maintenance of Information in Evolution.” Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences, 2022. https://doi.org/10.1073/pnas.2123152119. ieee: M. Hledik, N. H. Barton, and G. Tkačik, “Accumulation and maintenance of information in evolution,” Proceedings of the National Academy of Sciences, vol. 119, no. 36. Proceedings of the National Academy of Sciences, 2022. ista: Hledik M, Barton NH, Tkačik G. 2022. Accumulation and maintenance of information in evolution. Proceedings of the National Academy of Sciences. 119(36), e2123152119. mla: Hledik, Michal, et al. “Accumulation and Maintenance of Information in Evolution.” Proceedings of the National Academy of Sciences, vol. 119, no. 36, e2123152119, Proceedings of the National Academy of Sciences, 2022, doi:10.1073/pnas.2123152119. short: M. Hledik, N.H. Barton, G. Tkačik, Proceedings of the National Academy of Sciences 119 (2022). date_created: 2022-09-11T22:01:55Z date_published: 2022-08-29T00:00:00Z date_updated: 2024-03-06T14:22:51Z day: '29' ddc: - '570' department: - _id: NiBa - _id: GaTk doi: 10.1073/pnas.2123152119 ec_funded: 1 external_id: isi: - '000889278400014' pmid: - '36037343' file: - access_level: open_access checksum: 6dec51f6567da9039982a571508a8e4d content_type: application/pdf creator: dernst date_created: 2022-09-12T08:08:12Z date_updated: 2022-09-12T08:08:12Z file_id: '12091' file_name: 2022_PNAS_Hledik.pdf file_size: 2165752 relation: main_file success: 1 file_date_updated: 2022-09-12T08:08:12Z has_accepted_license: '1' intvolume: ' 119' isi: 1 issue: '36' language: - iso: eng month: '08' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 25B07788-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '250152' name: Limits to selection in biology and in evolutionary computation - _id: 2665AAFE-B435-11E9-9278-68D0E5697425 grant_number: RGP0034/2018 name: Can evolution minimize spurious signaling crosstalk to reach optimal performance? publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' related_material: record: - id: '15020' relation: dissertation_contains status: public scopus_import: '1' status: public title: Accumulation and maintenance of information in evolution tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 119 year: '2022' ... --- _id: '12667' abstract: - lang: eng text: Unlike crystalline atomic and ionic solids, texture development due to crystallographically preferred growth in colloidal crystals is less studied. Here we investigate the underlying mechanisms of the texture evolution in an evaporation-induced colloidal assembly process through experiments, modeling, and theoretical analysis. In this widely used approach to obtain large-area colloidal crystals, the colloidal particles are driven to the meniscus via the evaporation of a solvent or matrix precursor solution where they close-pack to form a face-centered cubic colloidal assembly. Via two-dimensional large-area crystallographic mapping, we show that the initial crystal orientation is dominated by the interaction of particles with the meniscus, resulting in the expected coalignment of the close-packed direction with the local meniscus geometry. By combining with crystal structure analysis at a single-particle level, we further reveal that, at the later stage of self-assembly, however, the colloidal crystal undergoes a gradual rotation facilitated by geometrically necessary dislocations (GNDs) and achieves a large-area uniform crystallographic orientation with the close-packed direction perpendicular to the meniscus and parallel to the growth direction. Classical slip analysis, finite element-based mechanical simulation, computational colloidal assembly modeling, and continuum theory unequivocally show that these GNDs result from the tensile stress field along the meniscus direction due to the constrained shrinkage of the colloidal crystal during drying. The generation of GNDs with specific slip systems within individual grains leads to crystallographic rotation to accommodate the mechanical stress. The mechanistic understanding reported here can be utilized to control crystallographic features of colloidal assemblies, and may provide further insights into crystallographically preferred growth in synthetic, biological, and geological crystals. article_number: e2107588118 article_processing_charge: No article_type: original author: - first_name: Ling full_name: Li, Ling last_name: Li - first_name: Carl Peter full_name: Goodrich, Carl Peter id: EB352CD2-F68A-11E9-89C5-A432E6697425 last_name: Goodrich orcid: 0000-0002-1307-5074 - first_name: Haizhao full_name: Yang, Haizhao last_name: Yang - first_name: Katherine R. full_name: Phillips, Katherine R. last_name: Phillips - first_name: Zian full_name: Jia, Zian last_name: Jia - first_name: Hongshun full_name: Chen, Hongshun last_name: Chen - first_name: Lifeng full_name: Wang, Lifeng last_name: Wang - first_name: Jinjin full_name: Zhong, Jinjin last_name: Zhong - first_name: Anhua full_name: Liu, Anhua last_name: Liu - first_name: Jianfeng full_name: Lu, Jianfeng last_name: Lu - first_name: Jianwei full_name: Shuai, Jianwei last_name: Shuai - first_name: Michael P. full_name: Brenner, Michael P. last_name: Brenner - first_name: Frans full_name: Spaepen, Frans last_name: Spaepen - first_name: Joanna full_name: Aizenberg, Joanna last_name: Aizenberg citation: ama: Li L, Goodrich CP, Yang H, et al. Microscopic origins of the crystallographically preferred growth in evaporation-induced colloidal crystals. PNAS. 2021;118(32). doi:10.1073/pnas.2107588118 apa: Li, L., Goodrich, C. P., Yang, H., Phillips, K. R., Jia, Z., Chen, H., … Aizenberg, J. (2021). Microscopic origins of the crystallographically preferred growth in evaporation-induced colloidal crystals. PNAS. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2107588118 chicago: Li, Ling, Carl Peter Goodrich, Haizhao Yang, Katherine R. Phillips, Zian Jia, Hongshun Chen, Lifeng Wang, et al. “Microscopic Origins of the Crystallographically Preferred Growth in Evaporation-Induced Colloidal Crystals.” PNAS. Proceedings of the National Academy of Sciences, 2021. https://doi.org/10.1073/pnas.2107588118. ieee: L. Li et al., “Microscopic origins of the crystallographically preferred growth in evaporation-induced colloidal crystals,” PNAS, vol. 118, no. 32. Proceedings of the National Academy of Sciences, 2021. ista: Li L, Goodrich CP, Yang H, Phillips KR, Jia Z, Chen H, Wang L, Zhong J, Liu A, Lu J, Shuai J, Brenner MP, Spaepen F, Aizenberg J. 2021. Microscopic origins of the crystallographically preferred growth in evaporation-induced colloidal crystals. PNAS. 118(32), e2107588118. mla: Li, Ling, et al. “Microscopic Origins of the Crystallographically Preferred Growth in Evaporation-Induced Colloidal Crystals.” PNAS, vol. 118, no. 32, e2107588118, Proceedings of the National Academy of Sciences, 2021, doi:10.1073/pnas.2107588118. short: L. Li, C.P. Goodrich, H. Yang, K.R. Phillips, Z. Jia, H. Chen, L. Wang, J. Zhong, A. Liu, J. Lu, J. Shuai, M.P. Brenner, F. Spaepen, J. Aizenberg, PNAS 118 (2021). date_created: 2023-02-21T08:51:04Z date_published: 2021-08-10T00:00:00Z date_updated: 2023-02-23T10:45:44Z day: '10' ddc: - '570' doi: 10.1073/pnas.2107588118 extern: '1' external_id: pmid: - '34341109' file: - access_level: open_access checksum: 702f7ec60ce6f2815104ab649dc661a4 content_type: application/pdf creator: dernst date_created: 2023-02-23T10:42:07Z date_updated: 2023-02-23T10:42:07Z file_id: '12674' file_name: 2021_PNAS_Li.pdf file_size: 3275944 relation: main_file success: 1 file_date_updated: 2023-02-23T10:42:07Z has_accepted_license: '1' intvolume: ' 118' issue: '32' language: - iso: eng month: '08' oa: 1 oa_version: Published Version pmid: 1 publication: PNAS publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Microscopic origins of the crystallographically preferred growth in evaporation-induced colloidal crystals tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 118 year: '2021' ... --- _id: '9257' abstract: - lang: eng text: 'The inverse problem of designing component interactions to target emergent structure is fundamental to numerous applications in biotechnology, materials science, and statistical physics. Equally important is the inverse problem of designing emergent kinetics, but this has received considerably less attention. Using recent advances in automatic differentiation, we show how kinetic pathways can be precisely designed by directly differentiating through statistical physics models, namely free energy calculations and molecular dynamics simulations. We consider two systems that are crucial to our understanding of structural self-assembly: bulk crystallization and small nanoclusters. In each case, we are able to assemble precise dynamical features. Using gradient information, we manipulate interactions among constituent particles to tune the rate at which these systems yield specific structures of interest. Moreover, we use this approach to learn nontrivial features about the high-dimensional design space, allowing us to accurately predict when multiple kinetic features can be simultaneously and independently controlled. These results provide a concrete and generalizable foundation for studying nonstructural self-assembly, including kinetic properties as well as other complex emergent properties, in a vast array of systems.' acknowledgement: We thank Agnese Curatolo, Megan Engel, Ofer Kimchi, Seong Ho Pahng, and Roy Frostig for helpful discussions. This material is based on work supported by NSF Graduate Research Fellowship Grant DGE1745303. This research was funded by NSF Grant DMS-1715477, Materials Research Science and Engineering Centers Grant DMR-1420570, and Office of Naval Research Grant N00014-17-1-3029. M.P.B. is an investigator of the Simons Foundation. article_number: e2024083118 article_processing_charge: No article_type: original author: - first_name: Carl Peter full_name: Goodrich, Carl Peter id: EB352CD2-F68A-11E9-89C5-A432E6697425 last_name: Goodrich orcid: 0000-0002-1307-5074 - first_name: Ella M. full_name: King, Ella M. last_name: King - first_name: Samuel S. full_name: Schoenholz, Samuel S. last_name: Schoenholz - first_name: Ekin D. full_name: Cubuk, Ekin D. last_name: Cubuk - first_name: Michael P. full_name: Brenner, Michael P. last_name: Brenner citation: ama: Goodrich CP, King EM, Schoenholz SS, Cubuk ED, Brenner MP. Designing self-assembling kinetics with differentiable statistical physics models. Proceedings of the National Academy of Sciences. 2021;118(10). doi:10.1073/pnas.2024083118 apa: Goodrich, C. P., King, E. M., Schoenholz, S. S., Cubuk, E. D., & Brenner, M. P. (2021). Designing self-assembling kinetics with differentiable statistical physics models. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.2024083118 chicago: Goodrich, Carl Peter, Ella M. King, Samuel S. Schoenholz, Ekin D. Cubuk, and Michael P. Brenner. “Designing Self-Assembling Kinetics with Differentiable Statistical Physics Models.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2021. https://doi.org/10.1073/pnas.2024083118. ieee: C. P. Goodrich, E. M. King, S. S. Schoenholz, E. D. Cubuk, and M. P. Brenner, “Designing self-assembling kinetics with differentiable statistical physics models,” Proceedings of the National Academy of Sciences, vol. 118, no. 10. National Academy of Sciences, 2021. ista: Goodrich CP, King EM, Schoenholz SS, Cubuk ED, Brenner MP. 2021. Designing self-assembling kinetics with differentiable statistical physics models. Proceedings of the National Academy of Sciences. 118(10), e2024083118. mla: Goodrich, Carl Peter, et al. “Designing Self-Assembling Kinetics with Differentiable Statistical Physics Models.” Proceedings of the National Academy of Sciences, vol. 118, no. 10, e2024083118, National Academy of Sciences, 2021, doi:10.1073/pnas.2024083118. short: C.P. Goodrich, E.M. King, S.S. Schoenholz, E.D. Cubuk, M.P. Brenner, Proceedings of the National Academy of Sciences 118 (2021). date_created: 2021-03-21T23:01:20Z date_published: 2021-03-09T00:00:00Z date_updated: 2023-08-07T14:19:34Z day: '09' ddc: - '530' department: - _id: CaGo doi: 10.1073/pnas.2024083118 external_id: isi: - '000627429100097' pmid: - '33653960' file: - access_level: open_access checksum: 5be8da2b1c0757feb1057f1a515cf9e0 content_type: application/pdf creator: dernst date_created: 2021-03-22T12:23:54Z date_updated: 2021-03-22T12:23:54Z file_id: '9278' file_name: 2021_PNAS_Goodrich.pdf file_size: 1047954 relation: main_file success: 1 file_date_updated: 2021-03-22T12:23:54Z has_accepted_license: '1' intvolume: ' 118' isi: 1 issue: '10' language: - iso: eng month: '03' oa: 1 oa_version: Published Version pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Designing self-assembling kinetics with differentiable statistical physics models tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 118 year: '2021' ... --- _id: '9330' abstract: - lang: eng text: In nerve cells the genes encoding for α2δ subunits of voltage-gated calcium channels have been linked to synaptic functions and neurological disease. Here we show that α2δ subunits are essential for the formation and organization of glutamatergic synapses. Using a cellular α2δ subunit triple-knockout/knockdown model, we demonstrate a failure in presynaptic differentiation evidenced by defective presynaptic calcium channel clustering and calcium influx, smaller presynaptic active zones, and a strongly reduced accumulation of presynaptic vesicle-associated proteins (synapsin and vGLUT). The presynaptic defect is associated with the downscaling of postsynaptic AMPA receptors and the postsynaptic density. The role of α2δ isoforms as synaptic organizers is highly redundant, as each individual α2δ isoform can rescue presynaptic calcium channel trafficking and expression of synaptic proteins. Moreover, α2δ-2 and α2δ-3 with mutated metal ion-dependent adhesion sites can fully rescue presynaptic synapsin expression but only partially calcium channel trafficking, suggesting that the regulatory role of α2δ subunits is independent from its role as a calcium channel subunit. Our findings influence the current view on excitatory synapse formation. First, our study suggests that postsynaptic differentiation is secondary to presynaptic differentiation. Second, the dependence of presynaptic differentiation on α2δ implicates α2δ subunits as potential nucleation points for the organization of synapses. Finally, our results suggest that α2δ subunits act as transsynaptic organizers of glutamatergic synapses, thereby aligning the synaptic active zone with the postsynaptic density. acknowledged_ssus: - _id: EM-Fac acknowledgement: "We thank Arnold Schwartz for providing α2δ-1 knockout mice; Ariane Benedetti, Sabine Baumgartner, Sandra Demetz, and Irene Mahlknecht for technical support; Nadine Ortner and Andreas Lieb for electrophysiological experiments; the team of the Electron Microscopy Facility at the Institute of Science and Technology Austria for technical support related to ultrastructural analysis; Hermann Dietrich and Anja Beierfuß and her team for animal care; Jutta Engel and Jörg Striessnig for critical discussions; and Bruno Benedetti and Bernhard Flucher for critical discussions and reading the manuscript. This study was supported by Austrian Science Fund Grants P24079, F44060, F44150, and DOC30-B30 (to G.J.O.) and T855 (to M.C.), European Research Council Grant AdG 694539 (to R.S.), Deutsche Forschungsgemeinschaft\r\nGrant SFB1348-TP A03 (to M.M.), and Interdisziplinäre Zentrum für Klinische Forschung Münster Grant Mi3/004/19 (to M.M.). This work is part of the PhD theses of C.L.S., S.M.G., and C.A." article_processing_charge: No article_type: original author: - first_name: Clemens L. full_name: Schöpf, Clemens L. last_name: Schöpf - first_name: Cornelia full_name: Ablinger, Cornelia last_name: Ablinger - first_name: Stefanie M. full_name: Geisler, Stefanie M. last_name: Geisler - first_name: Ruslan I. full_name: Stanika, Ruslan I. last_name: Stanika - first_name: Marta full_name: Campiglio, Marta last_name: Campiglio - first_name: Walter full_name: Kaufmann, Walter id: 3F99E422-F248-11E8-B48F-1D18A9856A87 last_name: Kaufmann orcid: 0000-0001-9735-5315 - first_name: Benedikt full_name: Nimmervoll, Benedikt last_name: Nimmervoll - first_name: Bettina full_name: Schlick, Bettina last_name: Schlick - first_name: Johannes full_name: Brockhaus, Johannes last_name: Brockhaus - first_name: Markus full_name: Missler, Markus last_name: Missler - first_name: Ryuichi full_name: Shigemoto, Ryuichi id: 499F3ABC-F248-11E8-B48F-1D18A9856A87 last_name: Shigemoto orcid: 0000-0001-8761-9444 - first_name: Gerald J. full_name: Obermair, Gerald J. last_name: Obermair citation: ama: Schöpf CL, Ablinger C, Geisler SM, et al. Presynaptic α2δ subunits are key organizers of glutamatergic synapses. PNAS. 2021;118(14). doi:10.1073/pnas.1920827118 apa: Schöpf, C. L., Ablinger, C., Geisler, S. M., Stanika, R. I., Campiglio, M., Kaufmann, W., … Obermair, G. J. (2021). Presynaptic α2δ subunits are key organizers of glutamatergic synapses. PNAS. National Academy of Sciences. https://doi.org/10.1073/pnas.1920827118 chicago: Schöpf, Clemens L., Cornelia Ablinger, Stefanie M. Geisler, Ruslan I. Stanika, Marta Campiglio, Walter Kaufmann, Benedikt Nimmervoll, et al. “Presynaptic Α2δ Subunits Are Key Organizers of Glutamatergic Synapses.” PNAS. National Academy of Sciences, 2021. https://doi.org/10.1073/pnas.1920827118. ieee: C. L. Schöpf et al., “Presynaptic α2δ subunits are key organizers of glutamatergic synapses,” PNAS, vol. 118, no. 14. National Academy of Sciences, 2021. ista: Schöpf CL, Ablinger C, Geisler SM, Stanika RI, Campiglio M, Kaufmann W, Nimmervoll B, Schlick B, Brockhaus J, Missler M, Shigemoto R, Obermair GJ. 2021. Presynaptic α2δ subunits are key organizers of glutamatergic synapses. PNAS. 118(14). mla: Schöpf, Clemens L., et al. “Presynaptic Α2δ Subunits Are Key Organizers of Glutamatergic Synapses.” PNAS, vol. 118, no. 14, National Academy of Sciences, 2021, doi:10.1073/pnas.1920827118. short: C.L. Schöpf, C. Ablinger, S.M. Geisler, R.I. Stanika, M. Campiglio, W. Kaufmann, B. Nimmervoll, B. Schlick, J. Brockhaus, M. Missler, R. Shigemoto, G.J. Obermair, PNAS 118 (2021). date_created: 2021-04-18T22:01:40Z date_published: 2021-04-06T00:00:00Z date_updated: 2023-08-08T13:08:47Z day: '06' ddc: - '570' department: - _id: EM-Fac - _id: RySh doi: 10.1073/pnas.1920827118 ec_funded: 1 external_id: isi: - '000637398300002' file: - access_level: open_access checksum: dd014f68ae9d7d8d8fc4139a24e04506 content_type: application/pdf creator: dernst date_created: 2021-04-19T10:10:56Z date_updated: 2021-04-19T10:10:56Z file_id: '9340' file_name: 2021_PNAS_Schoepf.pdf file_size: 2603911 relation: main_file success: 1 file_date_updated: 2021-04-19T10:10:56Z has_accepted_license: '1' intvolume: ' 118' isi: 1 issue: '14' language: - iso: eng month: '04' oa: 1 oa_version: Published Version project: - _id: 25CA28EA-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '694539' name: 'In situ analysis of single channel subunit composition in neurons: physiological implication in synaptic plasticity and behaviour' publication: PNAS publication_identifier: eissn: - 1091-6490 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Presynaptic α2δ subunits are key organizers of glutamatergic synapses tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 118 year: '2021' ... --- _id: '9877' abstract: - lang: eng text: 'Parent-of-origin–dependent gene expression in mammals and flowering plants results from differing chromatin imprints (genomic imprinting) between maternally and paternally inherited alleles. Imprinted gene expression in the endosperm of seeds is associated with localized hypomethylation of maternally but not paternally inherited DNA, with certain small RNAs also displaying parent-of-origin–specific expression. To understand the evolution of imprinting mechanisms in Oryza sativa (rice), we analyzed imprinting divergence among four cultivars that span both japonica and indica subspecies: Nipponbare, Kitaake, 93-11, and IR64. Most imprinted genes are imprinted across cultivars and enriched for functions in chromatin and transcriptional regulation, development, and signaling. However, 4 to 11% of imprinted genes display divergent imprinting. Analyses of DNA methylation and small RNAs revealed that endosperm-specific 24-nt small RNA–producing loci show weak RNA-directed DNA methylation, frequently overlap genes, and are imprinted four times more often than genes. However, imprinting divergence most often correlated with local DNA methylation epimutations (9 of 17 assessable loci), which were largely stable within subspecies. Small insertion/deletion events and transposable element insertions accompanied 4 of the 9 locally epimutated loci and associated with imprinting divergence at another 4 of the remaining 8 loci. Correlating epigenetic and genetic variation occurred at key regulatory regions—the promoter and transcription start site of maternally biased genes, and the promoter and gene body of paternally biased genes. Our results reinforce models for the role of maternal-specific DNA hypomethylation in imprinting of both maternally and paternally biased genes, and highlight the role of transposition and epimutation in rice imprinting evolution.' acknowledgement: We thank W. Schackwitz, M. Joel, and the Joint Genome Institute sequencing team for generating the IR64 genome sequence and initial analysis; L. Bartley and E. Marvinney for genomic DNA preparation for IR64 resequencing; and the University of California (UC), Berkeley Sanger sequencing team for technical advice and service. This work was partially funded by NSF Grant IOS-1025890 (to R.L.F. and D.Z.), NIH Grant GM69415 (to R.L.F. and D.Z.), NIH Grant GM122968 (to P.C.R.), a Young Investigator Grant from the Arnold and Mabel Beckman Foundation (to D.Z.), an International Fulbright Science and Technology Award (to J.A.R.), and a Taiwan Ministry of Education Studying Abroad Scholarship (to P.-H.H.). This work used the Vincent J. Coates Genomics Sequencing Laboratory at UC Berkeley, supported by NIH Instrumentation Grant S10 OD018174. article_number: e2104445118 article_processing_charge: Yes (in subscription journal) article_type: original author: - first_name: Jessica A. full_name: Rodrigues, Jessica A. last_name: Rodrigues - first_name: Ping-Hung full_name: Hsieh, Ping-Hung last_name: Hsieh - first_name: Deling full_name: Ruan, Deling last_name: Ruan - first_name: Toshiro full_name: Nishimura, Toshiro last_name: Nishimura - first_name: Manoj K. full_name: Sharma, Manoj K. last_name: Sharma - first_name: Rita full_name: Sharma, Rita last_name: Sharma - first_name: XinYi full_name: Ye, XinYi last_name: Ye - first_name: Nicholas D. full_name: Nguyen, Nicholas D. last_name: Nguyen - first_name: Sukhranjan full_name: Nijjar, Sukhranjan last_name: Nijjar - first_name: Pamela C. full_name: Ronald, Pamela C. last_name: Ronald - first_name: Robert L. full_name: Fischer, Robert L. last_name: Fischer - first_name: Daniel full_name: Zilberman, Daniel id: 6973db13-dd5f-11ea-814e-b3e5455e9ed1 last_name: Zilberman orcid: 0000-0002-0123-8649 citation: ama: Rodrigues JA, Hsieh P-H, Ruan D, et al. Divergence among rice cultivars reveals roles for transposition and epimutation in ongoing evolution of genomic imprinting. Proceedings of the National Academy of Sciences. 2021;118(29). doi:10.1073/pnas.2104445118 apa: Rodrigues, J. A., Hsieh, P.-H., Ruan, D., Nishimura, T., Sharma, M. K., Sharma, R., … Zilberman, D. (2021). Divergence among rice cultivars reveals roles for transposition and epimutation in ongoing evolution of genomic imprinting. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.2104445118 chicago: Rodrigues, Jessica A., Ping-Hung Hsieh, Deling Ruan, Toshiro Nishimura, Manoj K. Sharma, Rita Sharma, XinYi Ye, et al. “Divergence among Rice Cultivars Reveals Roles for Transposition and Epimutation in Ongoing Evolution of Genomic Imprinting.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2021. https://doi.org/10.1073/pnas.2104445118. ieee: J. A. Rodrigues et al., “Divergence among rice cultivars reveals roles for transposition and epimutation in ongoing evolution of genomic imprinting,” Proceedings of the National Academy of Sciences, vol. 118, no. 29. National Academy of Sciences, 2021. ista: Rodrigues JA, Hsieh P-H, Ruan D, Nishimura T, Sharma MK, Sharma R, Ye X, Nguyen ND, Nijjar S, Ronald PC, Fischer RL, Zilberman D. 2021. Divergence among rice cultivars reveals roles for transposition and epimutation in ongoing evolution of genomic imprinting. Proceedings of the National Academy of Sciences. 118(29), e2104445118. mla: Rodrigues, Jessica A., et al. “Divergence among Rice Cultivars Reveals Roles for Transposition and Epimutation in Ongoing Evolution of Genomic Imprinting.” Proceedings of the National Academy of Sciences, vol. 118, no. 29, e2104445118, National Academy of Sciences, 2021, doi:10.1073/pnas.2104445118. short: J.A. Rodrigues, P.-H. Hsieh, D. Ruan, T. Nishimura, M.K. Sharma, R. Sharma, X. Ye, N.D. Nguyen, S. Nijjar, P.C. Ronald, R.L. Fischer, D. Zilberman, Proceedings of the National Academy of Sciences 118 (2021). date_created: 2021-08-10T19:30:41Z date_published: 2021-07-16T00:00:00Z date_updated: 2023-08-11T10:28:10Z day: '16' ddc: - '580' - '570' department: - _id: DaZi doi: 10.1073/pnas.2104445118 external_id: isi: - '000685037700012' pmid: - '34272287' file: - access_level: open_access checksum: 19e84ad8c03c60222744ee8e16cd6998 content_type: application/pdf creator: asandaue date_created: 2021-08-11T09:31:41Z date_updated: 2021-08-11T09:31:41Z file_id: '9879' file_name: 2021_ProceedingsOfTheNationalAcademyOfSciences_Rodrigues.pdf file_size: 1898360 relation: main_file success: 1 file_date_updated: 2021-08-11T09:31:41Z has_accepted_license: '1' intvolume: ' 118' isi: 1 issue: '29' language: - iso: eng month: '07' oa: 1 oa_version: Published Version pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Divergence among rice cultivars reveals roles for transposition and epimutation in ongoing evolution of genomic imprinting tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 118 year: '2021' ... --- _id: '10299' abstract: - lang: eng text: Turbulence generally arises in shear flows if velocities and hence, inertial forces are sufficiently large. In striking contrast, viscoelastic fluids can exhibit disordered motion even at vanishing inertia. Intermediate between these cases, a state of chaotic motion, “elastoinertial turbulence” (EIT), has been observed in a narrow Reynolds number interval. We here determine the origin of EIT in experiments and show that characteristic EIT structures can be detected across an unexpectedly wide range of parameters. Close to onset, a pattern of chevron-shaped streaks emerges in qualitative agreement with linear and weakly nonlinear theory. However, in experiments, the dynamics remain weakly chaotic, and the instability can be traced to far lower Reynolds numbers than permitted by theory. For increasing inertia, the flow undergoes a transformation to a wall mode composed of inclined near-wall streaks and shear layers. This mode persists to what is known as the “maximum drag reduction limit,” and overall EIT is found to dominate viscoelastic flows across more than three orders of magnitude in Reynolds number. acknowledgement: We thank Y. Dubief, R. Kerswell, E. Marensi, V. Shankar, V. Steinberg, and V. Terrapon for discussions and helpful comments. A.V. and B.H. acknowledge funding from the Austrian Science Fund, grant I4188-N30, within the Deutsche Forschungsgemeinschaft research unit FOR 2688. article_number: e2102350118 article_processing_charge: No article_type: original author: - first_name: George H full_name: Choueiri, George H id: 448BD5BC-F248-11E8-B48F-1D18A9856A87 last_name: Choueiri - first_name: Jose M full_name: Lopez Alonso, Jose M id: 40770848-F248-11E8-B48F-1D18A9856A87 last_name: Lopez Alonso orcid: 0000-0002-0384-2022 - first_name: Atul full_name: Varshney, Atul id: 2A2006B2-F248-11E8-B48F-1D18A9856A87 last_name: Varshney orcid: 0000-0002-3072-5999 - first_name: Sarath full_name: Sankar, Sarath last_name: Sankar - first_name: Björn full_name: Hof, Björn id: 3A374330-F248-11E8-B48F-1D18A9856A87 last_name: Hof orcid: 0000-0003-2057-2754 citation: ama: Choueiri GH, Lopez Alonso JM, Varshney A, Sankar S, Hof B. Experimental observation of the origin and structure of elastoinertial turbulence. Proceedings of the National Academy of Sciences. 2021;118(45). doi:10.1073/pnas.2102350118 apa: Choueiri, G. H., Lopez Alonso, J. M., Varshney, A., Sankar, S., & Hof, B. (2021). Experimental observation of the origin and structure of elastoinertial turbulence. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.2102350118 chicago: Choueiri, George H, Jose M Lopez Alonso, Atul Varshney, Sarath Sankar, and Björn Hof. “Experimental Observation of the Origin and Structure of Elastoinertial Turbulence.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2021. https://doi.org/10.1073/pnas.2102350118. ieee: G. H. Choueiri, J. M. Lopez Alonso, A. Varshney, S. Sankar, and B. Hof, “Experimental observation of the origin and structure of elastoinertial turbulence,” Proceedings of the National Academy of Sciences, vol. 118, no. 45. National Academy of Sciences, 2021. ista: Choueiri GH, Lopez Alonso JM, Varshney A, Sankar S, Hof B. 2021. Experimental observation of the origin and structure of elastoinertial turbulence. Proceedings of the National Academy of Sciences. 118(45), e2102350118. mla: Choueiri, George H., et al. “Experimental Observation of the Origin and Structure of Elastoinertial Turbulence.” Proceedings of the National Academy of Sciences, vol. 118, no. 45, e2102350118, National Academy of Sciences, 2021, doi:10.1073/pnas.2102350118. short: G.H. Choueiri, J.M. Lopez Alonso, A. Varshney, S. Sankar, B. Hof, Proceedings of the National Academy of Sciences 118 (2021). date_created: 2021-11-17T13:24:24Z date_published: 2021-11-03T00:00:00Z date_updated: 2023-08-14T11:50:10Z day: '03' department: - _id: BjHo doi: 10.1073/pnas.2102350118 external_id: arxiv: - '2103.00023' isi: - '000720926900019' pmid: - ' 34732570' intvolume: ' 118' isi: 1 issue: '45' keyword: - multidisciplinary - elastoinertial turbulence - viscoelastic flows - elastic instability - drag reduction language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2103.00023 month: '11' oa: 1 oa_version: Preprint pmid: 1 project: - _id: 238B8092-32DE-11EA-91FC-C7463DDC885E call_identifier: FWF grant_number: I04188 name: Instabilities in pulsating pipe flow of Newtonian and complex fluids publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Experimental observation of the origin and structure of elastoinertial turbulence type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 118 year: '2021' ... --- _id: '9301' abstract: - lang: eng text: Electrodepositing insulating lithium peroxide (Li2O2) is the key process during discharge of aprotic Li–O2 batteries and determines rate, capacity, and reversibility. Current understanding states that the partition between surface adsorbed and dissolved lithium superoxide governs whether Li2O2 grows as a conformal surface film or larger particles, leading to low or high capacities, respectively. However, better understanding governing factors for Li2O2 packing density and capacity requires structural sensitive in situ metrologies. Here, we establish in situ small- and wide-angle X-ray scattering (SAXS/WAXS) as a suitable method to record the Li2O2 phase evolution with atomic to submicrometer resolution during cycling a custom-built in situ Li–O2 cell. Combined with sophisticated data analysis, SAXS allows retrieving rich quantitative structural information from complex multiphase systems. Surprisingly, we find that features are absent that would point at a Li2O2 surface film formed via two consecutive electron transfers, even in poorly solvating electrolytes thought to be prototypical for surface growth. All scattering data can be modeled by stacks of thin Li2O2 platelets potentially forming large toroidal particles. Li2O2 solution growth is further justified by rotating ring-disk electrode measurements and electron microscopy. Higher discharge overpotentials lead to smaller Li2O2 particles, but there is no transition to an electronically passivating, conformal Li2O2 coating. Hence, mass transport of reactive species rather than electronic transport through a Li2O2 film limits the discharge capacity. Provided that species mobilities and carbon surface areas are high, this allows for high discharge capacities even in weakly solvating electrolytes. The currently accepted Li–O2 reaction mechanism ought to be reconsidered. acknowledged_ssus: - _id: EM-Fac acknowledgement: S.A.F. and C.P. are indebted to the European Research Council under the European Union's Horizon 2020 research and innovation program (Grant Agreement No. 636069), the Austrian Federal Ministry of Science, Research and Economy, and the Austrian Research Promotion Agency (Grant No. 845364). We acknowledge A. Zankel and H. Schroettner for support with SEM measurements. C.P. thanks N. Kostoglou, C. Koczwara, M. Hartmann, and M. Burian for discussions on gas sorption analysis, C++ programming, Monte Carlo modeling, and in situ SAXS experiments, respectively. We thank S. Stadlbauer for help with Karl Fischer titration, R. Riccò for gas sorption measurements, and acknowledge Graz University of Technology for support through the Lead Project LP-03. Likewise, the use of SOMAPP Lab, a core facility supported by the Austrian Federal Ministry of Education, Science and Research, the Graz University of Technology, the University of Graz, and Anton Paar GmbH is acknowledged. S.A.F. is indebted to Institute of Science and Technology Austria (IST Austria) for support. This research was supported by the Scientific Service Units of IST Austria through resources provided by the Electron Microscopy Facility. article_number: e2021893118 article_processing_charge: No article_type: original author: - first_name: Christian full_name: Prehal, Christian last_name: Prehal - first_name: Aleksej full_name: Samojlov, Aleksej last_name: Samojlov - first_name: Manfred full_name: Nachtnebel, Manfred last_name: Nachtnebel - first_name: Ludek full_name: Lovicar, Ludek id: 36DB3A20-F248-11E8-B48F-1D18A9856A87 last_name: Lovicar orcid: 0000-0001-6206-4200 - first_name: Manfred full_name: Kriechbaum, Manfred last_name: Kriechbaum - first_name: Heinz full_name: Amenitsch, Heinz last_name: Amenitsch - first_name: Stefan Alexander full_name: Freunberger, Stefan Alexander id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425 last_name: Freunberger orcid: 0000-0003-2902-5319 citation: ama: Prehal C, Samojlov A, Nachtnebel M, et al. In situ small-angle X-ray scattering reveals solution phase discharge of Li–O2 batteries with weakly solvating electrolytes. Proceedings of the National Academy of Sciences. 2021;118(14). doi:10.1073/pnas.2021893118 apa: Prehal, C., Samojlov, A., Nachtnebel, M., Lovicar, L., Kriechbaum, M., Amenitsch, H., & Freunberger, S. A. (2021). In situ small-angle X-ray scattering reveals solution phase discharge of Li–O2 batteries with weakly solvating electrolytes. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.2021893118 chicago: Prehal, Christian, Aleksej Samojlov, Manfred Nachtnebel, Ludek Lovicar, Manfred Kriechbaum, Heinz Amenitsch, and Stefan Alexander Freunberger. “In Situ Small-Angle X-Ray Scattering Reveals Solution Phase Discharge of Li–O2 Batteries with Weakly Solvating Electrolytes.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2021. https://doi.org/10.1073/pnas.2021893118. ieee: C. Prehal et al., “In situ small-angle X-ray scattering reveals solution phase discharge of Li–O2 batteries with weakly solvating electrolytes,” Proceedings of the National Academy of Sciences, vol. 118, no. 14. National Academy of Sciences, 2021. ista: Prehal C, Samojlov A, Nachtnebel M, Lovicar L, Kriechbaum M, Amenitsch H, Freunberger SA. 2021. In situ small-angle X-ray scattering reveals solution phase discharge of Li–O2 batteries with weakly solvating electrolytes. Proceedings of the National Academy of Sciences. 118(14), e2021893118. mla: Prehal, Christian, et al. “In Situ Small-Angle X-Ray Scattering Reveals Solution Phase Discharge of Li–O2 Batteries with Weakly Solvating Electrolytes.” Proceedings of the National Academy of Sciences, vol. 118, no. 14, e2021893118, National Academy of Sciences, 2021, doi:10.1073/pnas.2021893118. short: C. Prehal, A. Samojlov, M. Nachtnebel, L. Lovicar, M. Kriechbaum, H. Amenitsch, S.A. Freunberger, Proceedings of the National Academy of Sciences 118 (2021). date_created: 2021-03-31T07:00:01Z date_published: 2021-04-06T00:00:00Z date_updated: 2023-09-05T13:27:18Z day: '06' department: - _id: StFr - _id: EM-Fac doi: 10.1073/pnas.2021893118 external_id: isi: - '000637398300050' intvolume: ' 118' isi: 1 issue: '14' keyword: - small-angle X-ray scattering - oxygen reduction - disproportionation - Li-air battery language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.26434/chemrxiv.11447775 month: '04' oa: 1 oa_version: Preprint publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' status: public title: In situ small-angle X-ray scattering reveals solution phase discharge of Li–O2 batteries with weakly solvating electrolytes type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 118 year: '2021' ... --- _id: '9887' abstract: - lang: eng text: Clathrin-mediated endocytosis is the major route of entry of cargos into cells and thus underpins many physiological processes. During endocytosis, an area of flat membrane is remodeled by proteins to create a spherical vesicle against intracellular forces. The protein machinery which mediates this membrane bending in plants is unknown. However, it is known that plant endocytosis is actin independent, thus indicating that plants utilize a unique mechanism to mediate membrane bending against high-turgor pressure compared to other model systems. Here, we investigate the TPLATE complex, a plant-specific endocytosis protein complex. It has been thought to function as a classical adaptor functioning underneath the clathrin coat. However, by using biochemical and advanced live microscopy approaches, we found that TPLATE is peripherally associated with clathrin-coated vesicles and localizes at the rim of endocytosis events. As this localization is more fitting to the protein machinery involved in membrane bending during endocytosis, we examined cells in which the TPLATE complex was disrupted and found that the clathrin structures present as flat patches. This suggests a requirement of the TPLATE complex for membrane bending during plant clathrin–mediated endocytosis. Next, we used in vitro biophysical assays to confirm that the TPLATE complex possesses protein domains with intrinsic membrane remodeling activity. These results redefine the role of the TPLATE complex and implicate it as a key component of the evolutionarily distinct plant endocytosis mechanism, which mediates endocytic membrane bending against the high-turgor pressure in plant cells. acknowledged_ssus: - _id: EM-Fac - _id: LifeSc - _id: Bio acknowledgement: 'We gratefully thank Julie Neveu and Dr. Amanda Barranco of the Grégory Vert laboratory for help preparing plants in France, Dr. Zuzana Gelova for help and advice with protoplast generation, Dr. Stéphane Vassilopoulos and Dr. Florian Schur for advice regarding EM tomography, Alejandro Marquiegui Alvaro for help with material generation, and Dr. Lukasz Kowalski for generously gifting us the mWasabi protein. This research was supported by the Scientific Service Units of Institute of Science and Technology Austria (IST Austria) through resources provided by the Electron Microscopy Facility, Lab Support Facility (particularly Dorota Jaworska), and the Bioimaging Facility. We acknowledge the Advanced Microscopy Facility of the Vienna BioCenter Core Facilities for use of the 3D SIM. For the mass spectrometry analysis of proteins, we acknowledge the University of Natural Resources and Life Sciences (BOKU) Core Facility Mass Spectrometry. This work was supported by the following funds: A.J. is supported by funding from the Austrian Science Fund I3630B25 to J.F. P.M. and E.B. are supported by Agence Nationale de la Recherche ANR-11-EQPX-0029 Morphoscope2 and ANR-10-INBS-04 France BioImaging. S.Y.B. is supported by the NSF No. 1121998 and 1614915. J.W. and D.V.D. are supported by the European Research Council Grant 682436 (to D.V.D.), a China Scholarship Council Grant 201508440249 (to J.W.), and by a Ghent University Special Research Co-funding Grant ST01511051 (to J.W.).' article_number: e2113046118 article_processing_charge: No article_type: original author: - first_name: Alexander J full_name: Johnson, Alexander J id: 46A62C3A-F248-11E8-B48F-1D18A9856A87 last_name: Johnson orcid: 0000-0002-2739-8843 - first_name: Dana A full_name: Dahhan, Dana A last_name: Dahhan - first_name: Nataliia full_name: Gnyliukh, Nataliia id: 390C1120-F248-11E8-B48F-1D18A9856A87 last_name: Gnyliukh orcid: 0000-0002-2198-0509 - first_name: Walter full_name: Kaufmann, Walter id: 3F99E422-F248-11E8-B48F-1D18A9856A87 last_name: Kaufmann orcid: 0000-0001-9735-5315 - first_name: Vanessa full_name: Zheden, Vanessa id: 39C5A68A-F248-11E8-B48F-1D18A9856A87 last_name: Zheden orcid: 0000-0002-9438-4783 - first_name: Tommaso full_name: Costanzo, Tommaso id: D93824F4-D9BA-11E9-BB12-F207E6697425 last_name: Costanzo orcid: 0000-0001-9732-3815 - first_name: Pierre full_name: Mahou, Pierre last_name: Mahou - first_name: Mónika full_name: Hrtyan, Mónika id: 45A71A74-F248-11E8-B48F-1D18A9856A87 last_name: Hrtyan - first_name: Jie full_name: Wang, Jie last_name: Wang - first_name: Juan L full_name: Aguilera Servin, Juan L id: 2A67C376-F248-11E8-B48F-1D18A9856A87 last_name: Aguilera Servin orcid: 0000-0002-2862-8372 - first_name: Daniël full_name: van Damme, Daniël last_name: van Damme - first_name: Emmanuel full_name: Beaurepaire, Emmanuel last_name: Beaurepaire - first_name: Martin full_name: Loose, Martin id: 462D4284-F248-11E8-B48F-1D18A9856A87 last_name: Loose orcid: 0000-0001-7309-9724 - first_name: Sebastian Y full_name: Bednarek, Sebastian Y last_name: Bednarek - first_name: Jiří full_name: Friml, Jiří id: 4159519E-F248-11E8-B48F-1D18A9856A87 last_name: Friml orcid: 0000-0002-8302-7596 citation: ama: Johnson AJ, Dahhan DA, Gnyliukh N, et al. The TPLATE complex mediates membrane bending during plant clathrin-mediated endocytosis. Proceedings of the National Academy of Sciences. 2021;118(51). doi:10.1073/pnas.2113046118 apa: Johnson, A. J., Dahhan, D. A., Gnyliukh, N., Kaufmann, W., Zheden, V., Costanzo, T., … Friml, J. (2021). The TPLATE complex mediates membrane bending during plant clathrin-mediated endocytosis. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.2113046118 chicago: Johnson, Alexander J, Dana A Dahhan, Nataliia Gnyliukh, Walter Kaufmann, Vanessa Zheden, Tommaso Costanzo, Pierre Mahou, et al. “The TPLATE Complex Mediates Membrane Bending during Plant Clathrin-Mediated Endocytosis.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2021. https://doi.org/10.1073/pnas.2113046118. ieee: A. J. Johnson et al., “The TPLATE complex mediates membrane bending during plant clathrin-mediated endocytosis,” Proceedings of the National Academy of Sciences, vol. 118, no. 51. National Academy of Sciences, 2021. ista: Johnson AJ, Dahhan DA, Gnyliukh N, Kaufmann W, Zheden V, Costanzo T, Mahou P, Hrtyan M, Wang J, Aguilera Servin JL, van Damme D, Beaurepaire E, Loose M, Bednarek SY, Friml J. 2021. The TPLATE complex mediates membrane bending during plant clathrin-mediated endocytosis. Proceedings of the National Academy of Sciences. 118(51), e2113046118. mla: Johnson, Alexander J., et al. “The TPLATE Complex Mediates Membrane Bending during Plant Clathrin-Mediated Endocytosis.” Proceedings of the National Academy of Sciences, vol. 118, no. 51, e2113046118, National Academy of Sciences, 2021, doi:10.1073/pnas.2113046118. short: A.J. Johnson, D.A. Dahhan, N. Gnyliukh, W. Kaufmann, V. Zheden, T. Costanzo, P. Mahou, M. Hrtyan, J. Wang, J.L. Aguilera Servin, D. van Damme, E. Beaurepaire, M. Loose, S.Y. Bednarek, J. Friml, Proceedings of the National Academy of Sciences 118 (2021). date_created: 2021-08-11T14:11:43Z date_published: 2021-12-14T00:00:00Z date_updated: 2024-02-19T11:06:09Z day: '14' ddc: - '580' department: - _id: JiFr - _id: MaLo - _id: EvBe - _id: EM-Fac - _id: NanoFab doi: 10.1073/pnas.2113046118 external_id: isi: - '000736417600043' pmid: - '34907016' file: - access_level: open_access checksum: 8d01e72e22c4fb1584e72d8601947069 content_type: application/pdf creator: cchlebak date_created: 2021-12-15T08:59:40Z date_updated: 2021-12-15T08:59:40Z file_id: '10546' file_name: 2021_PNAS_Johnson.pdf file_size: 2757340 relation: main_file success: 1 file_date_updated: 2021-12-15T08:59:40Z has_accepted_license: '1' intvolume: ' 118' isi: 1 issue: '51' language: - iso: eng month: '12' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 26538374-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: I03630 name: Molecular mechanisms of endocytic cargo recognition in plants publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' related_material: link: - relation: earlier_version url: https://doi.org/10.1101/2021.04.26.441441 record: - id: '14510' relation: dissertation_contains status: public - id: '14988' relation: research_data status: public status: public title: The TPLATE complex mediates membrane bending during plant clathrin-mediated endocytosis tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 118 year: '2021' ... --- _id: '10336' abstract: - lang: eng text: Biological membranes can dramatically accelerate the aggregation of normally soluble protein molecules into amyloid fibrils and alter the fibril morphologies, yet the molecular mechanisms through which this accelerated nucleation takes place are not yet understood. Here, we develop a coarse-grained model to systematically explore the effect that the structural properties of the lipid membrane and the nature of protein–membrane interactions have on the nucleation rates of amyloid fibrils. We identify two physically distinct nucleation pathways—protein-rich and lipid-rich—and quantify how the membrane fluidity and protein–membrane affinity control the relative importance of those molecular pathways. We find that the membrane’s susceptibility to reshaping and being incorporated into the fibrillar aggregates is a key determinant of its ability to promote protein aggregation. We then characterize the rates and the free-energy profile associated with this heterogeneous nucleation process, in which the surface itself participates in the aggregate structure. Finally, we compare quantitatively our data to experiments on membrane-catalyzed amyloid aggregation of α-synuclein, a protein implicated in Parkinson’s disease that predominately nucleates on membranes. More generally, our results provide a framework for understanding macromolecular aggregation on lipid membranes in a broad biological and biotechnological context. acknowledgement: We thank T. C. T. Michaels for reading the manuscript. This work was supported by the Academy of Medical Science (J.K. and A.Š.), the Cambridge Center for Misfolding Diseases (T.P.J.K.), the Biotechnology and Biological Sciences Research Council (T.P.J.K.), the Frances and Augustus Newman Foundation (T.P.J.K.), the European Research Council Grant PhysProt Agreement 337969, the Wellcome Trust (A.Š. and T.P.J.K.), the Royal Society (A.Š.), the Medical Research Council (J.K. and A.Š.), and the UK Materials and Molecular Modeling Hub for computational resources, which is partially funded by Engineering and Physical Sciences Research Council Grant EP/P020194/1. article_processing_charge: No article_type: original author: - first_name: Johannes full_name: Krausser, Johannes last_name: Krausser - first_name: Tuomas P. J. full_name: Knowles, Tuomas P. J. last_name: Knowles - first_name: Anđela full_name: Šarić, Anđela id: bf63d406-f056-11eb-b41d-f263a6566d8b last_name: Šarić orcid: 0000-0002-7854-2139 citation: ama: Krausser J, Knowles TPJ, Šarić A. Physical mechanisms of amyloid nucleation on fluid membranes. Proceedings of the National Academy of Sciences. 2020;117(52):33090-33098. doi:10.1073/pnas.2007694117 apa: Krausser, J., Knowles, T. P. J., & Šarić, A. (2020). Physical mechanisms of amyloid nucleation on fluid membranes. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.2007694117 chicago: Krausser, Johannes, Tuomas P. J. Knowles, and Anđela Šarić. “Physical Mechanisms of Amyloid Nucleation on Fluid Membranes.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2020. https://doi.org/10.1073/pnas.2007694117. ieee: J. Krausser, T. P. J. Knowles, and A. Šarić, “Physical mechanisms of amyloid nucleation on fluid membranes,” Proceedings of the National Academy of Sciences, vol. 117, no. 52. National Academy of Sciences, pp. 33090–33098, 2020. ista: Krausser J, Knowles TPJ, Šarić A. 2020. Physical mechanisms of amyloid nucleation on fluid membranes. Proceedings of the National Academy of Sciences. 117(52), 33090–33098. mla: Krausser, Johannes, et al. “Physical Mechanisms of Amyloid Nucleation on Fluid Membranes.” Proceedings of the National Academy of Sciences, vol. 117, no. 52, National Academy of Sciences, 2020, pp. 33090–98, doi:10.1073/pnas.2007694117. short: J. Krausser, T.P.J. Knowles, A. Šarić, Proceedings of the National Academy of Sciences 117 (2020) 33090–33098. date_created: 2021-11-25T15:07:09Z date_published: 2020-12-16T00:00:00Z date_updated: 2021-11-25T15:35:58Z day: '16' doi: 10.1073/pnas.2007694117 extern: '1' external_id: pmid: - '33328273' intvolume: ' 117' issue: '52' language: - iso: eng main_file_link: - open_access: '1' url: https://www.biorxiv.org/content/10.1101/2019.12.22.886267v2 month: '12' oa: 1 oa_version: Published Version page: 33090-33098 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Physical mechanisms of amyloid nucleation on fluid membranes type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 117 year: '2020' ... --- _id: '10347' abstract: - lang: eng text: Understanding the mechanism of action of compounds capable of inhibiting amyloid-fibril formation is critical to the development of potential therapeutics against protein-misfolding diseases. A fundamental challenge for progress is the range of possible target species and the disparate timescales involved, since the aggregating proteins are simultaneously the reactants, products, intermediates, and catalysts of the reaction. It is a complex problem, therefore, to choose the states of the aggregating proteins that should be bound by the compounds to achieve the most potent inhibition. We present here a comprehensive kinetic theory of amyloid-aggregation inhibition that reveals the fundamental thermodynamic and kinetic signatures characterizing effective inhibitors by identifying quantitative relationships between the aggregation and binding rate constants. These results provide general physical laws to guide the design and optimization of inhibitors of amyloid-fibril formation, revealing in particular the important role of on-rates in the binding of the inhibitors. acknowledgement: We acknowledge support from Peterhouse, Cambridge (T.C.T.M.); the Swiss National Science Foundation (T.C.T.M.); the Royal Society (A.S. and S.C.); the Academy of Medical Sciences (A.S.); Sidney Sussex College, Cambridge (G.M.); Newnham College, Cambridge (G.T.H.); the Wellcome Trust (T.P.J.K.); the Cambridge Center for Misfolding Diseases (T.P.J.K. and M.V.); the Biotechnology and Biological Sciences Research Council (T.P.J.K.); the Frances and Augustus Newman Foundation (T.P.J.K.); and the Synapsis Foundation for Alzheimer’s disease (P.A.). The research leading to these results has received funding from the European Research Council (ERC) under the European Union’s Seventh Framework Program (FP7/2007-2013) through the ERC Grant PhysProt (Agreement 337969). article_processing_charge: No article_type: original author: - first_name: Thomas C. T. full_name: Michaels, Thomas C. T. last_name: Michaels - first_name: Anđela full_name: Šarić, Anđela id: bf63d406-f056-11eb-b41d-f263a6566d8b last_name: Šarić orcid: 0000-0002-7854-2139 - first_name: Georg full_name: Meisl, Georg last_name: Meisl - first_name: Gabriella T. full_name: Heller, Gabriella T. last_name: Heller - first_name: Samo full_name: Curk, Samo last_name: Curk - first_name: Paolo full_name: Arosio, Paolo last_name: Arosio - first_name: Sara full_name: Linse, Sara last_name: Linse - first_name: Christopher M. full_name: Dobson, Christopher M. last_name: Dobson - first_name: Michele full_name: Vendruscolo, Michele last_name: Vendruscolo - first_name: Tuomas P. J. full_name: Knowles, Tuomas P. J. last_name: Knowles citation: ama: Michaels TCT, Šarić A, Meisl G, et al. Thermodynamic and kinetic design principles for amyloid-aggregation inhibitors. Proceedings of the National Academy of Sciences. 2020;117(39):24251-24257. doi:10.1073/pnas.2006684117 apa: Michaels, T. C. T., Šarić, A., Meisl, G., Heller, G. T., Curk, S., Arosio, P., … Knowles, T. P. J. (2020). Thermodynamic and kinetic design principles for amyloid-aggregation inhibitors. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.2006684117 chicago: Michaels, Thomas C. T., Anđela Šarić, Georg Meisl, Gabriella T. Heller, Samo Curk, Paolo Arosio, Sara Linse, Christopher M. Dobson, Michele Vendruscolo, and Tuomas P. J. Knowles. “Thermodynamic and Kinetic Design Principles for Amyloid-Aggregation Inhibitors.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2020. https://doi.org/10.1073/pnas.2006684117. ieee: T. C. T. Michaels et al., “Thermodynamic and kinetic design principles for amyloid-aggregation inhibitors,” Proceedings of the National Academy of Sciences, vol. 117, no. 39. National Academy of Sciences, pp. 24251–24257, 2020. ista: Michaels TCT, Šarić A, Meisl G, Heller GT, Curk S, Arosio P, Linse S, Dobson CM, Vendruscolo M, Knowles TPJ. 2020. Thermodynamic and kinetic design principles for amyloid-aggregation inhibitors. Proceedings of the National Academy of Sciences. 117(39), 24251–24257. mla: Michaels, Thomas C. T., et al. “Thermodynamic and Kinetic Design Principles for Amyloid-Aggregation Inhibitors.” Proceedings of the National Academy of Sciences, vol. 117, no. 39, National Academy of Sciences, 2020, pp. 24251–57, doi:10.1073/pnas.2006684117. short: T.C.T. Michaels, A. Šarić, G. Meisl, G.T. Heller, S. Curk, P. Arosio, S. Linse, C.M. Dobson, M. Vendruscolo, T.P.J. Knowles, Proceedings of the National Academy of Sciences 117 (2020) 24251–24257. date_created: 2021-11-26T07:48:27Z date_published: 2020-09-14T00:00:00Z date_updated: 2021-11-26T08:59:06Z day: '14' doi: 10.1073/pnas.2006684117 extern: '1' external_id: pmid: - '32929030' intvolume: ' 117' issue: '39' keyword: - multidisciplinary language: - iso: eng main_file_link: - open_access: '1' url: https://www.biorxiv.org/content/10.1101/2020.02.22.960716 month: '09' oa: 1 oa_version: Published Version page: 24251-24257 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Thermodynamic and kinetic design principles for amyloid-aggregation inhibitors type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 117 year: '2020' ... --- _id: '7580' abstract: - lang: eng text: The eukaryotic endomembrane system is controlled by small GTPases of the Rab family, which are activated at defined times and locations in a switch-like manner. While this switch is well understood for an individual protein, how regulatory networks produce intracellular activity patterns is currently not known. Here, we combine in vitro reconstitution experiments with computational modeling to study a minimal Rab5 activation network. We find that the molecular interactions in this system give rise to a positive feedback and bistable collective switching of Rab5. Furthermore, we find that switching near the critical point is intrinsically stochastic and provide evidence that controlling the inactive population of Rab5 on the membrane can shape the network response. Notably, we demonstrate that collective switching can spread on the membrane surface as a traveling wave of Rab5 activation. Together, our findings reveal how biochemical signaling networks control vesicle trafficking pathways and how their nonequilibrium properties define the spatiotemporal organization of the cell. acknowledged_ssus: - _id: Bio - _id: LifeSc article_processing_charge: No article_type: original author: - first_name: Urban full_name: Bezeljak, Urban id: 2A58201A-F248-11E8-B48F-1D18A9856A87 last_name: Bezeljak orcid: 0000-0003-1365-5631 - first_name: Hrushikesh full_name: Loya, Hrushikesh last_name: Loya - first_name: Beata M full_name: Kaczmarek, Beata M id: 36FA4AFA-F248-11E8-B48F-1D18A9856A87 last_name: Kaczmarek - first_name: Timothy E. full_name: Saunders, Timothy E. last_name: Saunders - first_name: Martin full_name: Loose, Martin id: 462D4284-F248-11E8-B48F-1D18A9856A87 last_name: Loose orcid: 0000-0001-7309-9724 citation: ama: Bezeljak U, Loya H, Kaczmarek BM, Saunders TE, Loose M. Stochastic activation and bistability in a Rab GTPase regulatory network. Proceedings of the National Academy of Sciences. 2020;117(12):6504-6549. doi:10.1073/pnas.1921027117 apa: Bezeljak, U., Loya, H., Kaczmarek, B. M., Saunders, T. E., & Loose, M. (2020). Stochastic activation and bistability in a Rab GTPase regulatory network. Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1921027117 chicago: Bezeljak, Urban, Hrushikesh Loya, Beata M Kaczmarek, Timothy E. Saunders, and Martin Loose. “Stochastic Activation and Bistability in a Rab GTPase Regulatory Network.” Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences, 2020. https://doi.org/10.1073/pnas.1921027117. ieee: U. Bezeljak, H. Loya, B. M. Kaczmarek, T. E. Saunders, and M. Loose, “Stochastic activation and bistability in a Rab GTPase regulatory network,” Proceedings of the National Academy of Sciences, vol. 117, no. 12. Proceedings of the National Academy of Sciences, pp. 6504–6549, 2020. ista: Bezeljak U, Loya H, Kaczmarek BM, Saunders TE, Loose M. 2020. Stochastic activation and bistability in a Rab GTPase regulatory network. Proceedings of the National Academy of Sciences. 117(12), 6504–6549. mla: Bezeljak, Urban, et al. “Stochastic Activation and Bistability in a Rab GTPase Regulatory Network.” Proceedings of the National Academy of Sciences, vol. 117, no. 12, Proceedings of the National Academy of Sciences, 2020, pp. 6504–49, doi:10.1073/pnas.1921027117. short: U. Bezeljak, H. Loya, B.M. Kaczmarek, T.E. Saunders, M. Loose, Proceedings of the National Academy of Sciences 117 (2020) 6504–6549. date_created: 2020-03-12T05:32:26Z date_published: 2020-03-24T00:00:00Z date_updated: 2023-09-07T13:17:06Z day: '24' department: - _id: MaLo - _id: CaBe doi: 10.1073/pnas.1921027117 external_id: isi: - '000521821800040' intvolume: ' 117' isi: 1 issue: '12' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1101/776567 month: '03' oa: 1 oa_version: Preprint page: 6504-6549 project: - _id: 2599F062-B435-11E9-9278-68D0E5697425 grant_number: RGY0083/2016 name: Reconstitution of cell polarity and axis determination in a cell-free system publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' related_material: link: - description: News on IST Homepage relation: press_release url: https://ist.ac.at/en/news/proteins-as-molecular-switches/ record: - id: '8341' relation: dissertation_contains status: public scopus_import: '1' status: public title: Stochastic activation and bistability in a Rab GTPase regulatory network type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 117 year: '2020' ... --- _id: '15061' abstract: - lang: eng text: The actin cytoskeleton, a dynamic network of actin filaments and associated F-actin–binding proteins, is fundamentally important in eukaryotes. α-Actinins are major F-actin bundlers that are inhibited by Ca2+ in nonmuscle cells. Here we report the mechanism of Ca2+-mediated regulation of Entamoeba histolytica α-actinin-2 (EhActn2) with features expected for the common ancestor of Entamoeba and higher eukaryotic α-actinins. Crystal structures of Ca2+-free and Ca2+-bound EhActn2 reveal a calmodulin-like domain (CaMD) uniquely inserted within the rod domain. Integrative studies reveal an exceptionally high affinity of the EhActn2 CaMD for Ca2+, binding of which can only be regulated in the presence of physiological concentrations of Mg2+. Ca2+ binding triggers an increase in protein multidomain rigidity, reducing conformational flexibility of F-actin–binding domains via interdomain cross-talk and consequently inhibiting F-actin bundling. In vivo studies uncover that EhActn2 plays an important role in phagocytic cup formation and might constitute a new drug target for amoebic dysentery. acknowledged_ssus: - _id: LifeSc acknowledgement: "We thank the staff of the macromolecular crystallography (MX) and SAXS beamlines at the European Synchrotron Radiation facility, Diamond, and Swiss Light Source for excellent support, and the Life Sciences Facility of the Institute of Science and Technology Austria for usage of the rheometer. We thank Life Sciences editors for editing assistance. EM data were\r\nrecorded at the EM Facility of the Vienna BioCenter Core Facilities (Austria). Confocal microscopy was carried out at the Advanced Instrument Research Facility, Jawaharlal Nehru University. K.D.-C.’s research was supported by the Initial Training Network MUZIC (ITN-MUZIC) (N°238423), Austrian Science Fund (FWF) Projects I525, I1593, P22276, P19060, and W1221, Laura Bassi Centre of Optimized Structural Studies (N°253275), a Wellcome Trust Collaborative Award (201543/Z/16/Z), COST Action BM1405, Vienna Science and Technology Fund (WWTF) Chemical Biology Project LS17-008, and Christian Doppler Laboratory for High-Content Structural Biology and Biotechnology. K.Z., J.L.A., C.S., E.A.G., and A.S. were supported by the University of Vienna, J.K. by a Wellcome Trust Collaborative Award and by the Centre of Optimized Structural Studies, M.P. by FWF Project I1593, E.d.A.R. ITN-MUZIC, and FWF Projects I525 and I1593, and T.C.M. and L.C. by FWF Project I 2408-B22. E.A.G. acknowledges the PhD program Structure and Interaction of Biological Macromolecules. M.B. acknowledges the University Grant Commission, India, for a senior research fellowship. A.B. acknowledges a JC Bose Fellowship from the Science Engineering Research Council. " article_processing_charge: No article_type: original author: - first_name: Nikos full_name: Pinotsis, Nikos last_name: Pinotsis - first_name: Karolina full_name: Zielinska, Karolina last_name: Zielinska - first_name: Mrigya full_name: Babuta, Mrigya last_name: Babuta - first_name: Joan L. full_name: Arolas, Joan L. last_name: Arolas - first_name: Julius full_name: Kostan, Julius last_name: Kostan - first_name: Muhammad Bashir full_name: Khan, Muhammad Bashir last_name: Khan - first_name: Claudia full_name: Schreiner, Claudia last_name: Schreiner - first_name: Anita P full_name: Testa Salmazo, Anita P id: 41F1F098-F248-11E8-B48F-1D18A9856A87 last_name: Testa Salmazo - first_name: Luciano full_name: Ciccarelli, Luciano last_name: Ciccarelli - first_name: Martin full_name: Puchinger, Martin last_name: Puchinger - first_name: Eirini A. full_name: Gkougkoulia, Eirini A. last_name: Gkougkoulia - first_name: Euripedes de Almeida full_name: Ribeiro, Euripedes de Almeida last_name: Ribeiro - first_name: Thomas C. full_name: Marlovits, Thomas C. last_name: Marlovits - first_name: Alok full_name: Bhattacharya, Alok last_name: Bhattacharya - first_name: Kristina full_name: Djinovic-Carugo, Kristina last_name: Djinovic-Carugo citation: ama: Pinotsis N, Zielinska K, Babuta M, et al. Calcium modulates the domain flexibility and function of an α-actinin similar to the ancestral α-actinin. Proceedings of the National Academy of Sciences. 2020;117(36):22101-22112. doi:10.1073/pnas.1917269117 apa: Pinotsis, N., Zielinska, K., Babuta, M., Arolas, J. L., Kostan, J., Khan, M. B., … Djinovic-Carugo, K. (2020). Calcium modulates the domain flexibility and function of an α-actinin similar to the ancestral α-actinin. Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1917269117 chicago: Pinotsis, Nikos, Karolina Zielinska, Mrigya Babuta, Joan L. Arolas, Julius Kostan, Muhammad Bashir Khan, Claudia Schreiner, et al. “Calcium Modulates the Domain Flexibility and Function of an α-Actinin Similar to the Ancestral α-Actinin.” Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences, 2020. https://doi.org/10.1073/pnas.1917269117. ieee: N. Pinotsis et al., “Calcium modulates the domain flexibility and function of an α-actinin similar to the ancestral α-actinin,” Proceedings of the National Academy of Sciences, vol. 117, no. 36. Proceedings of the National Academy of Sciences, pp. 22101–22112, 2020. ista: Pinotsis N, Zielinska K, Babuta M, Arolas JL, Kostan J, Khan MB, Schreiner C, Testa Salmazo AP, Ciccarelli L, Puchinger M, Gkougkoulia EA, Ribeiro E de A, Marlovits TC, Bhattacharya A, Djinovic-Carugo K. 2020. Calcium modulates the domain flexibility and function of an α-actinin similar to the ancestral α-actinin. Proceedings of the National Academy of Sciences. 117(36), 22101–22112. mla: Pinotsis, Nikos, et al. “Calcium Modulates the Domain Flexibility and Function of an α-Actinin Similar to the Ancestral α-Actinin.” Proceedings of the National Academy of Sciences, vol. 117, no. 36, Proceedings of the National Academy of Sciences, 2020, pp. 22101–12, doi:10.1073/pnas.1917269117. short: N. Pinotsis, K. Zielinska, M. Babuta, J.L. Arolas, J. Kostan, M.B. Khan, C. Schreiner, A.P. Testa Salmazo, L. Ciccarelli, M. Puchinger, E.A. Gkougkoulia, E. de A. Ribeiro, T.C. Marlovits, A. Bhattacharya, K. Djinovic-Carugo, Proceedings of the National Academy of Sciences 117 (2020) 22101–22112. date_created: 2024-03-04T10:03:52Z date_published: 2020-09-08T00:00:00Z date_updated: 2024-03-04T10:14:44Z day: '08' department: - _id: CaBe doi: 10.1073/pnas.1917269117 external_id: pmid: - '32848067' intvolume: ' 117' issue: '36' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1073/pnas.191726911 month: '09' oa: 1 oa_version: Published Version page: 22101-22112 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' status: public title: Calcium modulates the domain flexibility and function of an α-actinin similar to the ancestral α-actinin type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 117 year: '2020' ... --- _id: '8002' abstract: - lang: eng text: Wound healing in plant tissues, consisting of rigid cell wall-encapsulated cells, represents a considerable challenge and occurs through largely unknown mechanisms distinct from those in animals. Owing to their inability to migrate, plant cells rely on targeted cell division and expansion to regenerate wounds. Strict coordination of these wound-induced responses is essential to ensure efficient, spatially restricted wound healing. Single-cell tracking by live imaging allowed us to gain mechanistic insight into the wound perception and coordination of wound responses after laser-based wounding in Arabidopsis root. We revealed a crucial contribution of the collapse of damaged cells in wound perception and detected an auxin increase specific to cells immediately adjacent to the wound. This localized auxin increase balances wound-induced cell expansion and restorative division rates in a dose-dependent manner, leading to tumorous overproliferation when the canonical TIR1 auxin signaling is disrupted. Auxin and wound-induced turgor pressure changes together also spatially define the activation of key components of regeneration, such as the transcription regulator ERF115. Our observations suggest that the wound signaling involves the sensing of collapse of damaged cells and a local auxin signaling activation to coordinate the downstream transcriptional responses in the immediate wound vicinity. acknowledged_ssus: - _id: Bio - _id: LifeSc article_number: '202003346' article_processing_charge: No article_type: original author: - first_name: Lukas full_name: Hörmayer, Lukas id: 2EEE7A2A-F248-11E8-B48F-1D18A9856A87 last_name: Hörmayer orcid: 0000-0001-8295-2926 - first_name: Juan C full_name: Montesinos López, Juan C id: 310A8E3E-F248-11E8-B48F-1D18A9856A87 last_name: Montesinos López orcid: 0000-0001-9179-6099 - first_name: Petra full_name: Marhavá, Petra id: 44E59624-F248-11E8-B48F-1D18A9856A87 last_name: Marhavá - first_name: Eva full_name: Benková, Eva id: 38F4F166-F248-11E8-B48F-1D18A9856A87 last_name: Benková orcid: 0000-0002-8510-9739 - first_name: Saiko full_name: Yoshida, Saiko id: 2E46069C-F248-11E8-B48F-1D18A9856A87 last_name: Yoshida - first_name: Jiří full_name: Friml, Jiří id: 4159519E-F248-11E8-B48F-1D18A9856A87 last_name: Friml orcid: 0000-0002-8302-7596 citation: ama: Hörmayer L, Montesinos López JC, Marhavá P, Benková E, Yoshida S, Friml J. Wounding-induced changes in cellular pressure and localized auxin signalling spatially coordinate restorative divisions in roots. Proceedings of the National Academy of Sciences. 2020;117(26). doi:10.1073/pnas.2003346117 apa: Hörmayer, L., Montesinos López, J. C., Marhavá, P., Benková, E., Yoshida, S., & Friml, J. (2020). Wounding-induced changes in cellular pressure and localized auxin signalling spatially coordinate restorative divisions in roots. Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2003346117 chicago: Hörmayer, Lukas, Juan C Montesinos López, Petra Marhavá, Eva Benková, Saiko Yoshida, and Jiří Friml. “Wounding-Induced Changes in Cellular Pressure and Localized Auxin Signalling Spatially Coordinate Restorative Divisions in Roots.” Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences, 2020. https://doi.org/10.1073/pnas.2003346117. ieee: L. Hörmayer, J. C. Montesinos López, P. Marhavá, E. Benková, S. Yoshida, and J. Friml, “Wounding-induced changes in cellular pressure and localized auxin signalling spatially coordinate restorative divisions in roots,” Proceedings of the National Academy of Sciences, vol. 117, no. 26. Proceedings of the National Academy of Sciences, 2020. ista: Hörmayer L, Montesinos López JC, Marhavá P, Benková E, Yoshida S, Friml J. 2020. Wounding-induced changes in cellular pressure and localized auxin signalling spatially coordinate restorative divisions in roots. Proceedings of the National Academy of Sciences. 117(26), 202003346. mla: Hörmayer, Lukas, et al. “Wounding-Induced Changes in Cellular Pressure and Localized Auxin Signalling Spatially Coordinate Restorative Divisions in Roots.” Proceedings of the National Academy of Sciences, vol. 117, no. 26, 202003346, Proceedings of the National Academy of Sciences, 2020, doi:10.1073/pnas.2003346117. short: L. Hörmayer, J.C. Montesinos López, P. Marhavá, E. Benková, S. Yoshida, J. Friml, Proceedings of the National Academy of Sciences 117 (2020). date_created: 2020-06-22T13:33:52Z date_published: 2020-06-30T00:00:00Z date_updated: 2024-03-28T23:30:10Z day: '30' ddc: - '580' department: - _id: JiFr - _id: EvBe doi: 10.1073/pnas.2003346117 ec_funded: 1 external_id: isi: - '000565729700033' pmid: - '32541049' file: - access_level: open_access checksum: 908b09437680181de9990915f2113aca content_type: application/pdf creator: dernst date_created: 2020-06-23T11:30:53Z date_updated: 2020-07-14T12:48:07Z file_id: '8009' file_name: 2020_PNAS_Hoermayer.pdf file_size: 2407102 relation: main_file file_date_updated: 2020-07-14T12:48:07Z has_accepted_license: '1' intvolume: ' 117' isi: 1 issue: '26' language: - iso: eng month: '06' oa: 1 oa_version: None pmid: 1 project: - _id: 261099A6-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '742985' name: Tracing Evolution of Auxin Transport and Polarity in Plants - _id: 262EF96E-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29988 name: RNA-directed DNA methylation in plant development publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' related_material: link: - description: News on IST Homepage relation: press_release url: https://ist.ac.at/en/news/how-wounded-plants-coordinate-their-healing/ record: - id: '9992' relation: dissertation_contains status: public scopus_import: '1' status: public title: Wounding-induced changes in cellular pressure and localized auxin signalling spatially coordinate restorative divisions in roots tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 117 year: '2020' ... --- _id: '9460' abstract: - lang: eng text: Epigenetic reprogramming is required for proper regulation of gene expression in eukaryotic organisms. In Arabidopsis, active DNA demethylation is crucial for seed viability, pollen function, and successful reproduction. The DEMETER (DME) DNA glycosylase initiates localized DNA demethylation in vegetative and central cells, so-called companion cells that are adjacent to sperm and egg gametes, respectively. In rice, the central cell genome displays local DNA hypomethylation, suggesting that active DNA demethylation also occurs in rice; however, the enzyme responsible for this process is unknown. One candidate is the rice REPRESSOR OF SILENCING 1a (ROS1a) gene, which is related to DME and is essential for rice seed viability and pollen function. Here, we report genome-wide analyses of DNA methylation in wild-type and ros1a mutant sperm and vegetative cells. We find that the rice vegetative cell genome is locally hypomethylated compared with sperm by a process that requires ROS1a activity. We show that many ROS1a target sequences in the vegetative cell are hypomethylated in the rice central cell, suggesting that ROS1a also demethylates the central cell genome. Similar to Arabidopsis, we show that sperm non-CG methylation is indirectly promoted by DNA demethylation in the vegetative cell. These results reveal that DNA glycosylase-mediated DNA demethylation processes are conserved in Arabidopsis and rice, plant species that diverged 150 million years ago. Finally, although global non-CG methylation levels of sperm and egg differ, the maternal and paternal embryo genomes show similar non-CG methylation levels, suggesting that rice gamete genomes undergo dynamic DNA methylation reprogramming after cell fusion. article_processing_charge: No article_type: original author: - first_name: M. Yvonne full_name: Kim, M. Yvonne last_name: Kim - first_name: Akemi full_name: Ono, Akemi last_name: Ono - first_name: Stefan full_name: Scholten, Stefan last_name: Scholten - first_name: Tetsu full_name: Kinoshita, Tetsu last_name: Kinoshita - first_name: Daniel full_name: Zilberman, Daniel id: 6973db13-dd5f-11ea-814e-b3e5455e9ed1 last_name: Zilberman orcid: 0000-0002-0123-8649 - first_name: Takashi full_name: Okamoto, Takashi last_name: Okamoto - first_name: Robert L. full_name: Fischer, Robert L. last_name: Fischer citation: ama: Kim MY, Ono A, Scholten S, et al. DNA demethylation by ROS1a in rice vegetative cells promotes methylation in sperm. Proceedings of the National Academy of Sciences. 2019;116(19):9652-9657. doi:10.1073/pnas.1821435116 apa: Kim, M. Y., Ono, A., Scholten, S., Kinoshita, T., Zilberman, D., Okamoto, T., & Fischer, R. L. (2019). DNA demethylation by ROS1a in rice vegetative cells promotes methylation in sperm. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.1821435116 chicago: Kim, M. Yvonne, Akemi Ono, Stefan Scholten, Tetsu Kinoshita, Daniel Zilberman, Takashi Okamoto, and Robert L. Fischer. “DNA Demethylation by ROS1a in Rice Vegetative Cells Promotes Methylation in Sperm.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2019. https://doi.org/10.1073/pnas.1821435116. ieee: M. Y. Kim et al., “DNA demethylation by ROS1a in rice vegetative cells promotes methylation in sperm,” Proceedings of the National Academy of Sciences, vol. 116, no. 19. National Academy of Sciences, pp. 9652–9657, 2019. ista: Kim MY, Ono A, Scholten S, Kinoshita T, Zilberman D, Okamoto T, Fischer RL. 2019. DNA demethylation by ROS1a in rice vegetative cells promotes methylation in sperm. Proceedings of the National Academy of Sciences. 116(19), 9652–9657. mla: Kim, M. Yvonne, et al. “DNA Demethylation by ROS1a in Rice Vegetative Cells Promotes Methylation in Sperm.” Proceedings of the National Academy of Sciences, vol. 116, no. 19, National Academy of Sciences, 2019, pp. 9652–57, doi:10.1073/pnas.1821435116. short: M.Y. Kim, A. Ono, S. Scholten, T. Kinoshita, D. Zilberman, T. Okamoto, R.L. Fischer, Proceedings of the National Academy of Sciences 116 (2019) 9652–9657. date_created: 2021-06-04T12:38:20Z date_published: 2019-05-07T00:00:00Z date_updated: 2021-12-14T07:52:30Z day: '07' ddc: - '580' department: - _id: DaZi doi: 10.1073/pnas.1821435116 extern: '1' external_id: pmid: - '31000601' file: - access_level: open_access checksum: 5b0ae3779b8b21b5223bd2d3cceede3a content_type: application/pdf creator: asandaue date_created: 2021-06-04T12:50:47Z date_updated: 2021-06-04T12:50:47Z file_id: '9461' file_name: 2019_PNAS_Kim.pdf file_size: 1142540 relation: main_file success: 1 file_date_updated: 2021-06-04T12:50:47Z has_accepted_license: '1' intvolume: ' 116' issue: '19' keyword: - Multidisciplinary language: - iso: eng month: '05' oa: 1 oa_version: Published Version page: 9652-9657 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: DNA demethylation by ROS1a in rice vegetative cells promotes methylation in sperm tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 116 year: '2019' ... --- _id: '9689' abstract: - lang: eng text: A central goal of computational physics and chemistry is to predict material properties by using first-principles methods based on the fundamental laws of quantum mechanics. However, the high computational costs of these methods typically prevent rigorous predictions of macroscopic quantities at finite temperatures, such as heat capacity, density, and chemical potential. Here, we enable such predictions by marrying advanced free-energy methods with data-driven machine-learning interatomic potentials. We show that, for the ubiquitous and technologically essential system of water, a first-principles thermodynamic description not only leads to excellent agreement with experiments, but also reveals the crucial role of nuclear quantum fluctuations in modulating the thermodynamic stabilities of different phases of water. article_processing_charge: No article_type: original author: - first_name: Bingqing full_name: Cheng, Bingqing id: cbe3cda4-d82c-11eb-8dc7-8ff94289fcc9 last_name: Cheng orcid: 0000-0002-3584-9632 - first_name: Edgar A. full_name: Engel, Edgar A. last_name: Engel - first_name: Jörg full_name: Behler, Jörg last_name: Behler - first_name: Christoph full_name: Dellago, Christoph last_name: Dellago - first_name: Michele full_name: Ceriotti, Michele last_name: Ceriotti citation: ama: Cheng B, Engel EA, Behler J, Dellago C, Ceriotti M. Ab initio thermodynamics of liquid and solid water. Proceedings of the National Academy of Sciences. 2019;116(4):1110-1115. doi:10.1073/pnas.1815117116 apa: Cheng, B., Engel, E. A., Behler, J., Dellago, C., & Ceriotti, M. (2019). Ab initio thermodynamics of liquid and solid water. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.1815117116 chicago: Cheng, Bingqing, Edgar A. Engel, Jörg Behler, Christoph Dellago, and Michele Ceriotti. “Ab Initio Thermodynamics of Liquid and Solid Water.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2019. https://doi.org/10.1073/pnas.1815117116. ieee: B. Cheng, E. A. Engel, J. Behler, C. Dellago, and M. Ceriotti, “Ab initio thermodynamics of liquid and solid water,” Proceedings of the National Academy of Sciences, vol. 116, no. 4. National Academy of Sciences, pp. 1110–1115, 2019. ista: Cheng B, Engel EA, Behler J, Dellago C, Ceriotti M. 2019. Ab initio thermodynamics of liquid and solid water. Proceedings of the National Academy of Sciences. 116(4), 1110–1115. mla: Cheng, Bingqing, et al. “Ab Initio Thermodynamics of Liquid and Solid Water.” Proceedings of the National Academy of Sciences, vol. 116, no. 4, National Academy of Sciences, 2019, pp. 1110–15, doi:10.1073/pnas.1815117116. short: B. Cheng, E.A. Engel, J. Behler, C. Dellago, M. Ceriotti, Proceedings of the National Academy of Sciences 116 (2019) 1110–1115. date_created: 2021-07-19T10:17:09Z date_published: 2019-01-22T00:00:00Z date_updated: 2023-02-23T14:05:08Z day: '22' doi: 10.1073/pnas.1815117116 extern: '1' external_id: arxiv: - '1811.08630' pmid: - '30610171' intvolume: ' 116' issue: '4' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1073/pnas.1815117116 month: '01' oa: 1 oa_version: Published Version page: 1110-1115 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Ab initio thermodynamics of liquid and solid water type: journal_article user_id: 6785fbc1-c503-11eb-8a32-93094b40e1cf volume: 116 year: '2019' ... --- _id: '14001' abstract: - lang: eng text: Chiral molecules interact and react differently with other chiral objects, depending on their handedness. Therefore, it is essential to understand and ultimately control the evolution of molecular chirality during chemical reactions. Although highly sophisticated techniques for the controlled synthesis of chiral molecules have been developed, the observation of chirality on the natural femtosecond time scale of a chemical reaction has so far remained out of reach in the gas phase. Here, we demonstrate a general experimental technique, based on high-harmonic generation in tailored laser fields, and apply it to probe the time evolution of molecular chirality during the photodissociation of 2-iodobutane. These measurements show a change in sign and a pronounced increase in the magnitude of the chiral response over the first 100 fs, followed by its decay within less than 500 fs, revealing the photodissociation to achiral products. The observed time evolution is explained in terms of the variation of the electric and magnetic transition-dipole moments between the lowest electronic states of the cation as a function of the reaction coordinate. These results open the path to investigations of the chirality of molecular-reaction pathways, light-induced chirality in chemical processes, and the control of molecular chirality through tailored laser pulses. article_processing_charge: No article_type: original author: - first_name: Denitsa Rangelova full_name: Baykusheva, Denitsa Rangelova id: 71b4d059-2a03-11ee-914d-dfa3beed6530 last_name: Baykusheva - first_name: Daniel full_name: Zindel, Daniel last_name: Zindel - first_name: Vít full_name: Svoboda, Vít last_name: Svoboda - first_name: Elias full_name: Bommeli, Elias last_name: Bommeli - first_name: Manuel full_name: Ochsner, Manuel last_name: Ochsner - first_name: Andres full_name: Tehlar, Andres last_name: Tehlar - first_name: Hans Jakob full_name: Wörner, Hans Jakob last_name: Wörner citation: ama: Baykusheva DR, Zindel D, Svoboda V, et al. Real-time probing of chirality during a chemical reaction. Proceedings of the National Academy of Sciences. 2019;116(48):23923-23929. doi:10.1073/pnas.1907189116 apa: Baykusheva, D. R., Zindel, D., Svoboda, V., Bommeli, E., Ochsner, M., Tehlar, A., & Wörner, H. J. (2019). Real-time probing of chirality during a chemical reaction. Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1907189116 chicago: Baykusheva, Denitsa Rangelova, Daniel Zindel, Vít Svoboda, Elias Bommeli, Manuel Ochsner, Andres Tehlar, and Hans Jakob Wörner. “Real-Time Probing of Chirality during a Chemical Reaction.” Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences, 2019. https://doi.org/10.1073/pnas.1907189116. ieee: D. R. Baykusheva et al., “Real-time probing of chirality during a chemical reaction,” Proceedings of the National Academy of Sciences, vol. 116, no. 48. Proceedings of the National Academy of Sciences, pp. 23923–23929, 2019. ista: Baykusheva DR, Zindel D, Svoboda V, Bommeli E, Ochsner M, Tehlar A, Wörner HJ. 2019. Real-time probing of chirality during a chemical reaction. Proceedings of the National Academy of Sciences. 116(48), 23923–23929. mla: Baykusheva, Denitsa Rangelova, et al. “Real-Time Probing of Chirality during a Chemical Reaction.” Proceedings of the National Academy of Sciences, vol. 116, no. 48, Proceedings of the National Academy of Sciences, 2019, pp. 23923–29, doi:10.1073/pnas.1907189116. short: D.R. Baykusheva, D. Zindel, V. Svoboda, E. Bommeli, M. Ochsner, A. Tehlar, H.J. Wörner, Proceedings of the National Academy of Sciences 116 (2019) 23923–23929. date_created: 2023-08-09T13:10:36Z date_published: 2019-11-13T00:00:00Z date_updated: 2023-08-22T07:40:05Z day: '13' doi: 10.1073/pnas.1907189116 extern: '1' external_id: arxiv: - '1906.10818' pmid: - '31723044' intvolume: ' 116' issue: '48' keyword: - Multidisciplinary language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1073/pnas.1907189116 month: '11' oa: 1 oa_version: Published Version page: 23923-23929 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Real-time probing of chirality during a chemical reaction type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 116 year: '2019' ... --- _id: '196' abstract: - lang: eng text: 'The abelian sandpile serves as a model to study self-organized criticality, a phenomenon occurring in biological, physical and social processes. The identity of the abelian group is a fractal composed of self-similar patches, and its limit is subject of extensive collaborative research. Here, we analyze the evolution of the sandpile identity under harmonic fields of different orders. We show that this evolution corresponds to periodic cycles through the abelian group characterized by the smooth transformation and apparent conservation of the patches constituting the identity. The dynamics induced by second and third order harmonics resemble smooth stretchings, respectively translations, of the identity, while the ones induced by fourth order harmonics resemble magnifications and rotations. Starting with order three, the dynamics pass through extended regions of seemingly random configurations which spontaneously reassemble into accentuated patterns. We show that the space of harmonic functions projects to the extended analogue of the sandpile group, thus providing a set of universal coordinates identifying configurations between different domains. Since the original sandpile group is a subgroup of the extended one, this directly implies that it admits a natural renormalization. Furthermore, we show that the harmonic fields can be induced by simple Markov processes, and that the corresponding stochastic dynamics show remarkable robustness over hundreds of periods. Finally, we encode information into seemingly random configurations, and decode this information with an algorithm requiring minimal prior knowledge. Our results suggest that harmonic fields might split the sandpile group into sub-sets showing different critical coefficients, and that it might be possible to extend the fractal structure of the identity beyond the boundaries of its domain. ' acknowledgement: "M.L. is grateful to the members of the C Guet and G Tkacik groups for valuable comments and support. M.S. is grateful to Nikita Kalinin for inspiring communications.\r\n" article_processing_charge: No article_type: original author: - first_name: Moritz full_name: Lang, Moritz id: 29E0800A-F248-11E8-B48F-1D18A9856A87 last_name: Lang - first_name: Mikhail full_name: Shkolnikov, Mikhail id: 35084A62-F248-11E8-B48F-1D18A9856A87 last_name: Shkolnikov orcid: 0000-0002-4310-178X citation: ama: Lang M, Shkolnikov M. Harmonic dynamics of the Abelian sandpile. Proceedings of the National Academy of Sciences. 2019;116(8):2821-2830. doi:10.1073/pnas.1812015116 apa: Lang, M., & Shkolnikov, M. (2019). Harmonic dynamics of the Abelian sandpile. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.1812015116 chicago: Lang, Moritz, and Mikhail Shkolnikov. “Harmonic Dynamics of the Abelian Sandpile.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2019. https://doi.org/10.1073/pnas.1812015116. ieee: M. Lang and M. Shkolnikov, “Harmonic dynamics of the Abelian sandpile,” Proceedings of the National Academy of Sciences, vol. 116, no. 8. National Academy of Sciences, pp. 2821–2830, 2019. ista: Lang M, Shkolnikov M. 2019. Harmonic dynamics of the Abelian sandpile. Proceedings of the National Academy of Sciences. 116(8), 2821–2830. mla: Lang, Moritz, and Mikhail Shkolnikov. “Harmonic Dynamics of the Abelian Sandpile.” Proceedings of the National Academy of Sciences, vol. 116, no. 8, National Academy of Sciences, 2019, pp. 2821–30, doi:10.1073/pnas.1812015116. short: M. Lang, M. Shkolnikov, Proceedings of the National Academy of Sciences 116 (2019) 2821–2830. date_created: 2018-12-11T11:45:08Z date_published: 2019-02-19T00:00:00Z date_updated: 2023-09-11T14:09:34Z day: '19' department: - _id: CaGu - _id: GaTk - _id: TaHa doi: 10.1073/pnas.1812015116 external_id: arxiv: - '1806.10823' isi: - '000459074400013' pmid: - ' 30728300' intvolume: ' 116' isi: 1 issue: '8' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1073/pnas.1812015116 month: '02' oa: 1 oa_version: Published Version page: 2821-2830 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' related_material: link: - description: News on IST Webpage relation: press_release url: https://ist.ac.at/en/news/famous-sandpile-model-shown-to-move-like-a-traveling-sand-dune/ scopus_import: '1' status: public title: Harmonic dynamics of the Abelian sandpile type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 116 year: '2019' ... --- _id: '6999' abstract: - lang: eng text: Plasmodesmata (PD) are plant-specific membrane-lined channels that create cytoplasmic and membrane continuities between adjacent cells, thereby facilitating cell–cell communication and virus movement. Plant cells have evolved diverse mechanisms to regulate PD plasticity in response to numerous environmental stimuli. In particular, during defense against plant pathogens, the defense hormone, salicylic acid (SA), plays a crucial role in the regulation of PD permeability in a callose-dependent manner. Here, we uncover a mechanism by which plants restrict the spreading of virus and PD cargoes using SA signaling by increasing lipid order and closure of PD. We showed that exogenous SA application triggered the compartmentalization of lipid raft nanodomains through a modulation of the lipid raft-regulatory protein, Remorin (REM). Genetic studies, superresolution imaging, and transmission electron microscopy observation together demonstrated that Arabidopsis REM1.2 and REM1.3 are crucial for plasma membrane nanodomain assembly to control PD aperture and functionality. In addition, we also found that a 14-3-3 epsilon protein modulates REM clustering and membrane nanodomain compartmentalization through its direct interaction with REM proteins. This study unveils a molecular mechanism by which the key plant defense hormone, SA, triggers membrane lipid nanodomain reorganization, thereby regulating PD closure to impede virus spreading. article_processing_charge: No article_type: original author: - first_name: D full_name: Huang, D last_name: Huang - first_name: Y full_name: Sun, Y last_name: Sun - first_name: Z full_name: Ma, Z last_name: Ma - first_name: M full_name: Ke, M last_name: Ke - first_name: Y full_name: Cui, Y last_name: Cui - first_name: Z full_name: Chen, Z last_name: Chen - first_name: C full_name: Chen, C last_name: Chen - first_name: C full_name: Ji, C last_name: Ji - first_name: TM full_name: Tran, TM last_name: Tran - first_name: L full_name: Yang, L last_name: Yang - first_name: SM full_name: Lam, SM last_name: Lam - first_name: Y full_name: Han, Y last_name: Han - first_name: G full_name: Shu, G last_name: Shu - first_name: Jiří full_name: Friml, Jiří id: 4159519E-F248-11E8-B48F-1D18A9856A87 last_name: Friml orcid: 0000-0002-8302-7596 - first_name: Y full_name: Miao, Y last_name: Miao - first_name: L full_name: Jiang, L last_name: Jiang - first_name: X full_name: Chen, X last_name: Chen citation: ama: Huang D, Sun Y, Ma Z, et al. Salicylic acid-mediated plasmodesmal closure via Remorin-dependent lipid organization. Proceedings of the National Academy of Sciences of the United States of America. 2019;116(42):21274-21284. doi:10.1073/pnas.1911892116 apa: Huang, D., Sun, Y., Ma, Z., Ke, M., Cui, Y., Chen, Z., … Chen, X. (2019). Salicylic acid-mediated plasmodesmal closure via Remorin-dependent lipid organization. Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1911892116 chicago: Huang, D, Y Sun, Z Ma, M Ke, Y Cui, Z Chen, C Chen, et al. “Salicylic Acid-Mediated Plasmodesmal Closure via Remorin-Dependent Lipid Organization.” Proceedings of the National Academy of Sciences of the United States of America. Proceedings of the National Academy of Sciences, 2019. https://doi.org/10.1073/pnas.1911892116. ieee: D. Huang et al., “Salicylic acid-mediated plasmodesmal closure via Remorin-dependent lipid organization,” Proceedings of the National Academy of Sciences of the United States of America, vol. 116, no. 42. Proceedings of the National Academy of Sciences, pp. 21274–21284, 2019. ista: Huang D, Sun Y, Ma Z, Ke M, Cui Y, Chen Z, Chen C, Ji C, Tran T, Yang L, Lam S, Han Y, Shu G, Friml J, Miao Y, Jiang L, Chen X. 2019. Salicylic acid-mediated plasmodesmal closure via Remorin-dependent lipid organization. Proceedings of the National Academy of Sciences of the United States of America. 116(42), 21274–21284. mla: Huang, D., et al. “Salicylic Acid-Mediated Plasmodesmal Closure via Remorin-Dependent Lipid Organization.” Proceedings of the National Academy of Sciences of the United States of America, vol. 116, no. 42, Proceedings of the National Academy of Sciences, 2019, pp. 21274–84, doi:10.1073/pnas.1911892116. short: D. Huang, Y. Sun, Z. Ma, M. Ke, Y. Cui, Z. Chen, C. Chen, C. Ji, T. Tran, L. Yang, S. Lam, Y. Han, G. Shu, J. Friml, Y. Miao, L. Jiang, X. Chen, Proceedings of the National Academy of Sciences of the United States of America 116 (2019) 21274–21284. date_created: 2019-11-12T11:42:05Z date_published: 2019-10-15T00:00:00Z date_updated: 2023-10-17T12:32:37Z day: '15' ddc: - '580' department: - _id: JiFr doi: 10.1073/pnas.1911892116 external_id: isi: - '000490183000068' pmid: - '31575745' file: - access_level: open_access checksum: 258c666bc6253eab81961f61169eefae content_type: application/pdf creator: dernst date_created: 2019-11-13T08:22:28Z date_updated: 2020-07-14T12:47:46Z file_id: '7012' file_name: 2019_PNAS_Huang.pdf file_size: 3287466 relation: main_file file_date_updated: 2020-07-14T12:47:46Z has_accepted_license: '1' intvolume: ' 116' isi: 1 issue: '42' language: - iso: eng month: '10' oa: 1 oa_version: Published Version page: 21274-21284 pmid: 1 publication: Proceedings of the National Academy of Sciences of the United States of America publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' related_material: link: - relation: erratum url: https://doi.org/10.1073/pnas.2004738117 scopus_import: '1' status: public title: Salicylic acid-mediated plasmodesmal closure via Remorin-dependent lipid organization tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 116 year: '2019' ... --- _id: '9471' abstract: - lang: eng text: The DEMETER (DME) DNA glycosylase catalyzes genome-wide DNA demethylation and is required for endosperm genomic imprinting and embryo viability. Targets of DME-mediated DNA demethylation reside in small, euchromatic, AT-rich transposons and at the boundaries of large transposons, but how DME interacts with these diverse chromatin states is unknown. The STRUCTURE SPECIFIC RECOGNITION PROTEIN 1 (SSRP1) subunit of the chromatin remodeler FACT (facilitates chromatin transactions), was previously shown to be involved in the DME-dependent regulation of genomic imprinting in Arabidopsis endosperm. Therefore, to investigate the interaction between DME and chromatin, we focused on the activity of the two FACT subunits, SSRP1 and SUPPRESSOR of TY16 (SPT16), during reproduction in Arabidopsis. We found that FACT colocalizes with nuclear DME in vivo, and that DME has two classes of target sites, the first being euchromatic and accessible to DME, but the second, representing over half of DME targets, requiring the action of FACT for DME-mediated DNA demethylation genome-wide. Our results show that the FACT-dependent DME targets are GC-rich heterochromatin domains with high nucleosome occupancy enriched with H3K9me2 and H3K27me1. Further, we demonstrate that heterochromatin-associated linker histone H1 specifically mediates the requirement for FACT at a subset of DME-target loci. Overall, our results demonstrate that FACT is required for DME targeting by facilitating its access to heterochromatin. article_processing_charge: No article_type: original author: - first_name: Jennifer M. full_name: Frost, Jennifer M. last_name: Frost - first_name: M. Yvonne full_name: Kim, M. Yvonne last_name: Kim - first_name: Guen Tae full_name: Park, Guen Tae last_name: Park - first_name: Ping-Hung full_name: Hsieh, Ping-Hung last_name: Hsieh - first_name: Miyuki full_name: Nakamura, Miyuki last_name: Nakamura - first_name: Samuel J. H. full_name: Lin, Samuel J. H. last_name: Lin - first_name: Hyunjin full_name: Yoo, Hyunjin last_name: Yoo - first_name: Jaemyung full_name: Choi, Jaemyung last_name: Choi - first_name: Yoko full_name: Ikeda, Yoko last_name: Ikeda - first_name: Tetsu full_name: Kinoshita, Tetsu last_name: Kinoshita - first_name: Yeonhee full_name: Choi, Yeonhee last_name: Choi - first_name: Daniel full_name: Zilberman, Daniel id: 6973db13-dd5f-11ea-814e-b3e5455e9ed1 last_name: Zilberman orcid: 0000-0002-0123-8649 - first_name: Robert L. full_name: Fischer, Robert L. last_name: Fischer citation: ama: Frost JM, Kim MY, Park GT, et al. FACT complex is required for DNA demethylation at heterochromatin during reproduction in Arabidopsis. Proceedings of the National Academy of Sciences. 2018;115(20):E4720-E4729. doi:10.1073/pnas.1713333115 apa: Frost, J. M., Kim, M. Y., Park, G. T., Hsieh, P.-H., Nakamura, M., Lin, S. J. H., … Fischer, R. L. (2018). FACT complex is required for DNA demethylation at heterochromatin during reproduction in Arabidopsis. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.1713333115 chicago: Frost, Jennifer M., M. Yvonne Kim, Guen Tae Park, Ping-Hung Hsieh, Miyuki Nakamura, Samuel J. H. Lin, Hyunjin Yoo, et al. “FACT Complex Is Required for DNA Demethylation at Heterochromatin during Reproduction in Arabidopsis.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2018. https://doi.org/10.1073/pnas.1713333115. ieee: J. M. Frost et al., “FACT complex is required for DNA demethylation at heterochromatin during reproduction in Arabidopsis,” Proceedings of the National Academy of Sciences, vol. 115, no. 20. National Academy of Sciences, pp. E4720–E4729, 2018. ista: Frost JM, Kim MY, Park GT, Hsieh P-H, Nakamura M, Lin SJH, Yoo H, Choi J, Ikeda Y, Kinoshita T, Choi Y, Zilberman D, Fischer RL. 2018. FACT complex is required for DNA demethylation at heterochromatin during reproduction in Arabidopsis. Proceedings of the National Academy of Sciences. 115(20), E4720–E4729. mla: Frost, Jennifer M., et al. “FACT Complex Is Required for DNA Demethylation at Heterochromatin during Reproduction in Arabidopsis.” Proceedings of the National Academy of Sciences, vol. 115, no. 20, National Academy of Sciences, 2018, pp. E4720–29, doi:10.1073/pnas.1713333115. short: J.M. Frost, M.Y. Kim, G.T. Park, P.-H. Hsieh, M. Nakamura, S.J.H. Lin, H. Yoo, J. Choi, Y. Ikeda, T. Kinoshita, Y. Choi, D. Zilberman, R.L. Fischer, Proceedings of the National Academy of Sciences 115 (2018) E4720–E4729. date_created: 2021-06-07T06:11:28Z date_published: 2018-05-15T00:00:00Z date_updated: 2021-12-14T07:53:40Z day: '15' ddc: - '580' department: - _id: DaZi doi: 10.1073/pnas.1713333115 extern: '1' external_id: pmid: - '29712855' file: - access_level: open_access checksum: 810260dc0e3cc3033e15c19ad0dc123e content_type: application/pdf creator: asandaue date_created: 2021-06-07T06:16:38Z date_updated: 2021-06-07T06:16:38Z file_id: '9472' file_name: 2018_PNAS_Frost.pdf file_size: 3045260 relation: main_file success: 1 file_date_updated: 2021-06-07T06:16:38Z has_accepted_license: '1' intvolume: ' 115' issue: '20' keyword: - Multidisciplinary language: - iso: eng month: '05' oa: 1 oa_version: Published Version page: E4720-E4729 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' related_material: link: - relation: earlier_version url: 'https://doi.org/10.1101/187674 ' scopus_import: '1' status: public title: FACT complex is required for DNA demethylation at heterochromatin during reproduction in Arabidopsis tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 115 year: '2018' ... --- _id: '12607' abstract: - lang: eng text: Supraglacial ice cliffs exist on debris-covered glaciers worldwide, but despite their importance as melt hot spots, their life cycle is little understood. Early field observations had advanced a hypothesis of survival of north-facing and disappearance of south-facing cliffs, which is central for predicting the contribution of cliffs to total glacier mass losses. Their role as windows of energy transfer suggests they may explain the anomalously high mass losses of debris-covered glaciers in High Mountain Asia (HMA) despite the insulating debris, currently at the center of a debated controversy. We use a 3D model of cliff evolution coupled to very high-resolution topographic data to demonstrate that ice cliffs facing south (in the Northern Hemisphere) disappear within a few months due to enhanced solar radiation receipts and that aspect is the key control on cliffs evolution. We reproduce continuous flattening of south-facing cliffs, a result of their vertical gradient of incoming solar radiation and sky view factor. Our results establish that only north-facing cliffs are recurrent features and thus stable contributors to the melting of debris-covered glaciers. Satellite observations and mass balance modeling confirms that few south-facing cliffs of small size exist on the glaciers of Langtang, and their contribution to the glacier volume losses is very small (∼1%). This has major implications for the mass balance of HMA debris-covered glaciers as it provides the basis for new parameterizations of cliff evolution and distribution to constrain volume losses in a region where glaciers are highly relevant as water sources for millions of people. article_processing_charge: No article_type: original author: - first_name: Pascal full_name: Buri, Pascal last_name: Buri - first_name: Francesca full_name: Pellicciotti, Francesca id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70 last_name: Pellicciotti citation: ama: Buri P, Pellicciotti F. Aspect controls the survival of ice cliffs on debris-covered glaciers. PNAS. 2018;115(17):4369-4374. doi:10.1073/pnas.1713892115 apa: Buri, P., & Pellicciotti, F. (2018). Aspect controls the survival of ice cliffs on debris-covered glaciers. PNAS. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1713892115 chicago: Buri, Pascal, and Francesca Pellicciotti. “Aspect Controls the Survival of Ice Cliffs on Debris-Covered Glaciers.” PNAS. Proceedings of the National Academy of Sciences, 2018. https://doi.org/10.1073/pnas.1713892115. ieee: P. Buri and F. Pellicciotti, “Aspect controls the survival of ice cliffs on debris-covered glaciers,” PNAS, vol. 115, no. 17. Proceedings of the National Academy of Sciences, pp. 4369–4374, 2018. ista: Buri P, Pellicciotti F. 2018. Aspect controls the survival of ice cliffs on debris-covered glaciers. PNAS. 115(17), 4369–4374. mla: Buri, Pascal, and Francesca Pellicciotti. “Aspect Controls the Survival of Ice Cliffs on Debris-Covered Glaciers.” PNAS, vol. 115, no. 17, Proceedings of the National Academy of Sciences, 2018, pp. 4369–74, doi:10.1073/pnas.1713892115. short: P. Buri, F. Pellicciotti, PNAS 115 (2018) 4369–4374. date_created: 2023-02-20T08:13:41Z date_published: 2018-04-09T00:00:00Z date_updated: 2023-02-28T11:35:18Z day: '09' doi: 10.1073/pnas.1713892115 extern: '1' intvolume: ' 115' issue: '17' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1073/pnas.1713892115 month: '04' oa: 1 oa_version: Published Version page: 4369-4374 publication: PNAS publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Aspect controls the survival of ice cliffs on debris-covered glaciers type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 115 year: '2018' ... --- _id: '13376' abstract: - lang: eng text: Efficient molecular switching in confined spaces is critical for the successful development of artificial molecular machines. However, molecular switching events often entail large structural changes and therefore require conformational freedom, which is typically limited under confinement conditions. Here, we investigated the behavior of azobenzene—the key building block of light-controlled molecular machines—in a confined environment that is flexible and can adapt its shape to that of the bound guest. To this end, we encapsulated several structurally diverse azobenzenes within the cavity of a flexible, water-soluble coordination cage, and investigated their light-responsive behavior. Using UV/Vis absorption spectroscopy and a combination of NMR methods, we showed that each of the encapsulated azobenzenes exhibited distinct switching properties. An azobenzene forming a 1:1 host–guest inclusion complex could be efficiently photoisomerized in a reversible fashion. In contrast, successful switching in inclusion complexes incorporating two azobenzene guests was dependent on the availability of free cages in the system, and it involved reversible trafficking of azobenzene between the cages. In the absence of extra cages, photoswitching was either suppressed or it involved expulsion of azobenzene from the cage and consequently its precipitation from the solution. This finding was utilized to develop an information storage medium in which messages could be written and erased in a reversible fashion using light. article_processing_charge: No article_type: original author: - first_name: Dipak full_name: Samanta, Dipak last_name: Samanta - first_name: Julius full_name: Gemen, Julius last_name: Gemen - first_name: Zonglin full_name: Chu, Zonglin last_name: Chu - first_name: Yael full_name: Diskin-Posner, Yael last_name: Diskin-Posner - first_name: Linda J. W. full_name: Shimon, Linda J. W. last_name: Shimon - first_name: Rafal full_name: Klajn, Rafal id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b last_name: Klajn citation: ama: Samanta D, Gemen J, Chu Z, Diskin-Posner Y, Shimon LJW, Klajn R. Reversible photoswitching of encapsulated azobenzenes in water. Proceedings of the National Academy of Sciences. 2018;115(38):9379-9384. doi:10.1073/pnas.1712787115 apa: Samanta, D., Gemen, J., Chu, Z., Diskin-Posner, Y., Shimon, L. J. W., & Klajn, R. (2018). Reversible photoswitching of encapsulated azobenzenes in water. Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1712787115 chicago: Samanta, Dipak, Julius Gemen, Zonglin Chu, Yael Diskin-Posner, Linda J. W. Shimon, and Rafal Klajn. “Reversible Photoswitching of Encapsulated Azobenzenes in Water.” Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences, 2018. https://doi.org/10.1073/pnas.1712787115. ieee: D. Samanta, J. Gemen, Z. Chu, Y. Diskin-Posner, L. J. W. Shimon, and R. Klajn, “Reversible photoswitching of encapsulated azobenzenes in water,” Proceedings of the National Academy of Sciences, vol. 115, no. 38. Proceedings of the National Academy of Sciences, pp. 9379–9384, 2018. ista: Samanta D, Gemen J, Chu Z, Diskin-Posner Y, Shimon LJW, Klajn R. 2018. Reversible photoswitching of encapsulated azobenzenes in water. Proceedings of the National Academy of Sciences. 115(38), 9379–9384. mla: Samanta, Dipak, et al. “Reversible Photoswitching of Encapsulated Azobenzenes in Water.” Proceedings of the National Academy of Sciences, vol. 115, no. 38, Proceedings of the National Academy of Sciences, 2018, pp. 9379–84, doi:10.1073/pnas.1712787115. short: D. Samanta, J. Gemen, Z. Chu, Y. Diskin-Posner, L.J.W. Shimon, R. Klajn, Proceedings of the National Academy of Sciences 115 (2018) 9379–9384. date_created: 2023-08-01T09:40:00Z date_published: 2018-05-01T00:00:00Z date_updated: 2023-08-07T10:58:11Z day: '01' doi: 10.1073/pnas.1712787115 extern: '1' external_id: pmid: - '29717041' intvolume: ' 115' issue: '38' keyword: - Multidisciplinary language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1073/pnas.1712787115 month: '05' oa: 1 oa_version: Published Version page: 9379-9384 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Reversible photoswitching of encapsulated azobenzenes in water type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 115 year: '2018' ... --- _id: '6010' abstract: - lang: eng text: The optic tectum (TeO), or superior colliculus, is a multisensory midbrain center that organizes spatially orienting responses to relevant stimuli. To define the stimulus with the highest priority at each moment, a network of reciprocal connections between the TeO and the isthmi promotes competition between concurrent tectal inputs. In the avian midbrain, the neurons mediating enhancement and suppression of tectal inputs are located in separate isthmic nuclei, facilitating the analysis of the neural processes that mediate competition. A specific subset of radial neurons in the intermediate tectal layers relay retinal inputs to the isthmi, but at present it is unclear whether separate neurons innervate individual nuclei or a single neural type sends a common input to several of them. In this study, we used in vitro neural tracing and cell-filling experiments in chickens to show that single neurons innervate, via axon collaterals, the three nuclei that comprise the isthmotectal network. This demonstrates that the input signals representing the strength of the incoming stimuli are simultaneously relayed to the mechanisms promoting both enhancement and suppression of the input signals. By performing in vivo recordings in anesthetized chicks, we also show that this common input generates synchrony between both antagonistic mechanisms, demonstrating that activity enhancement and suppression are closely coordinated. From a computational point of view, these results suggest that these tectal neurons constitute integrative nodes that combine inputs from different sources to drive in parallel several concurrent neural processes, each performing complementary functions within the network through different firing patterns and connectivity. article_processing_charge: No author: - first_name: Florencia full_name: Garrido-Charad, Florencia last_name: Garrido-Charad - first_name: Tomas A full_name: Vega Zuniga, Tomas A id: 2E7C4E78-F248-11E8-B48F-1D18A9856A87 last_name: Vega Zuniga - first_name: Cristián full_name: Gutiérrez-Ibáñez, Cristián last_name: Gutiérrez-Ibáñez - first_name: Pedro full_name: Fernandez, Pedro last_name: Fernandez - first_name: Luciana full_name: López-Jury, Luciana last_name: López-Jury - first_name: Cristian full_name: González-Cabrera, Cristian last_name: González-Cabrera - first_name: Harvey J. full_name: Karten, Harvey J. last_name: Karten - first_name: Harald full_name: Luksch, Harald last_name: Luksch - first_name: Gonzalo J. full_name: Marín, Gonzalo J. last_name: Marín citation: ama: Garrido-Charad F, Vega Zuniga TA, Gutiérrez-Ibáñez C, et al. “Shepherd’s crook” neurons drive and synchronize the enhancing and suppressive mechanisms of the midbrain stimulus selection network. Proceedings of the National Academy of Sciences. 2018;115(32):E7615-E7623. doi:10.1073/pnas.1804517115 apa: Garrido-Charad, F., Vega Zuniga, T. A., Gutiérrez-Ibáñez, C., Fernandez, P., López-Jury, L., González-Cabrera, C., … Marín, G. J. (2018). “Shepherd’s crook” neurons drive and synchronize the enhancing and suppressive mechanisms of the midbrain stimulus selection network. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.1804517115 chicago: Garrido-Charad, Florencia, Tomas A Vega Zuniga, Cristián Gutiérrez-Ibáñez, Pedro Fernandez, Luciana López-Jury, Cristian González-Cabrera, Harvey J. Karten, Harald Luksch, and Gonzalo J. Marín. ““Shepherd’s Crook” Neurons Drive and Synchronize the Enhancing and Suppressive Mechanisms of the Midbrain Stimulus Selection Network.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2018. https://doi.org/10.1073/pnas.1804517115. ieee: F. Garrido-Charad et al., ““Shepherd’s crook” neurons drive and synchronize the enhancing and suppressive mechanisms of the midbrain stimulus selection network,” Proceedings of the National Academy of Sciences, vol. 115, no. 32. National Academy of Sciences, pp. E7615–E7623, 2018. ista: Garrido-Charad F, Vega Zuniga TA, Gutiérrez-Ibáñez C, Fernandez P, López-Jury L, González-Cabrera C, Karten HJ, Luksch H, Marín GJ. 2018. “Shepherd’s crook” neurons drive and synchronize the enhancing and suppressive mechanisms of the midbrain stimulus selection network. Proceedings of the National Academy of Sciences. 115(32), E7615–E7623. mla: Garrido-Charad, Florencia, et al. ““Shepherd’s Crook” Neurons Drive and Synchronize the Enhancing and Suppressive Mechanisms of the Midbrain Stimulus Selection Network.” Proceedings of the National Academy of Sciences, vol. 115, no. 32, National Academy of Sciences, 2018, pp. E7615–23, doi:10.1073/pnas.1804517115. short: F. Garrido-Charad, T.A. Vega Zuniga, C. Gutiérrez-Ibáñez, P. Fernandez, L. López-Jury, C. González-Cabrera, H.J. Karten, H. Luksch, G.J. Marín, Proceedings of the National Academy of Sciences 115 (2018) E7615–E7623. date_created: 2019-02-14T14:33:34Z date_published: 2018-08-07T00:00:00Z date_updated: 2023-09-19T14:35:36Z day: '07' department: - _id: MaJö doi: 10.1073/pnas.1804517115 external_id: isi: - '000440982000020' pmid: - '30026198' intvolume: ' 115' isi: 1 issue: '32' language: - iso: eng main_file_link: - open_access: '1' url: https://www.ncbi.nlm.nih.gov/pubmed/30026198 month: '08' oa: 1 oa_version: Submitted Version page: E7615-E7623 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: “Shepherd’s crook” neurons drive and synchronize the enhancing and suppressive mechanisms of the midbrain stimulus selection network type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 115 year: '2018' ... --- _id: '10373' abstract: - lang: eng text: 'Electric charges are conserved. The same would be expected to hold for magnetic charges, yet magnetic monopoles have never been observed. It is therefore surprising that the laws of nonequilibrium thermodynamics, combined with Maxwell’s equations, suggest that colloidal particles heated or cooled in certain polar or paramagnetic solvents may behave as if they carry an electric/magnetic charge. Here, we present numerical simulations that show that the field distribution around a pair of such heated/cooled colloidal particles agrees quantitatively with the theoretical predictions for a pair of oppositely charged electric or magnetic monopoles. However, in other respects, the nonequilibrium colloidal particles do not behave as monopoles: They cannot be moved by a homogeneous applied field. The numerical evidence for the monopole-like fields around heated/cooled colloidal particles is crucial because the experimental and numerical determination of forces between such colloidal particles would be complicated by the presence of other effects, such as thermophoresis.' acknowledgement: P.W. acknowledges many invaluable discussions with Martin Neumann, Chao Zhang, Michiel Sprik, Aleks Reinhardt, Carl Pölking, and Tine Curk. We acknowledge financial support from the Austrian Academy of Sciences through a doctoral (DOC) fellowship (to P.W.), the Austrian Science Fund (FWF) within the Spezialforschungsbereich Vienna Computational Materials Laboratory (Project F41) (C.D.), and the European Union Early Training Network NANOTRANS (Grant 674979 to D. Frenkel). The results presented here have been achieved in part using the Vienna Scientific Cluster. article_processing_charge: No article_type: original author: - first_name: Peter full_name: Wirnsberger, Peter last_name: Wirnsberger - first_name: Domagoj full_name: Fijan, Domagoj last_name: Fijan - first_name: Roger A. full_name: Lightwood, Roger A. last_name: Lightwood - first_name: Anđela full_name: Šarić, Anđela id: bf63d406-f056-11eb-b41d-f263a6566d8b last_name: Šarić orcid: 0000-0002-7854-2139 - first_name: Christoph full_name: Dellago, Christoph last_name: Dellago - first_name: Daan full_name: Frenkel, Daan last_name: Frenkel citation: ama: Wirnsberger P, Fijan D, Lightwood RA, Šarić A, Dellago C, Frenkel D. Numerical evidence for thermally induced monopoles. Proceedings of the National Academy of Sciences. 2017;114(19):4911-4914. doi:10.1073/pnas.1621494114 apa: Wirnsberger, P., Fijan, D., Lightwood, R. A., Šarić, A., Dellago, C., & Frenkel, D. (2017). Numerical evidence for thermally induced monopoles. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.1621494114 chicago: Wirnsberger, Peter, Domagoj Fijan, Roger A. Lightwood, Anđela Šarić, Christoph Dellago, and Daan Frenkel. “Numerical Evidence for Thermally Induced Monopoles.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2017. https://doi.org/10.1073/pnas.1621494114. ieee: P. Wirnsberger, D. Fijan, R. A. Lightwood, A. Šarić, C. Dellago, and D. Frenkel, “Numerical evidence for thermally induced monopoles,” Proceedings of the National Academy of Sciences, vol. 114, no. 19. National Academy of Sciences, pp. 4911–4914, 2017. ista: Wirnsberger P, Fijan D, Lightwood RA, Šarić A, Dellago C, Frenkel D. 2017. Numerical evidence for thermally induced monopoles. Proceedings of the National Academy of Sciences. 114(19), 4911–4914. mla: Wirnsberger, Peter, et al. “Numerical Evidence for Thermally Induced Monopoles.” Proceedings of the National Academy of Sciences, vol. 114, no. 19, National Academy of Sciences, 2017, pp. 4911–14, doi:10.1073/pnas.1621494114. short: P. Wirnsberger, D. Fijan, R.A. Lightwood, A. Šarić, C. Dellago, D. Frenkel, Proceedings of the National Academy of Sciences 114 (2017) 4911–4914. date_created: 2021-11-29T09:28:24Z date_published: 2017-04-24T00:00:00Z date_updated: 2021-11-29T09:59:12Z day: '24' doi: 10.1073/pnas.1621494114 extern: '1' external_id: arxiv: - '1610.06840' pmid: - '28439003' intvolume: ' 114' issue: '19' keyword: - multidisciplinary language: - iso: eng main_file_link: - open_access: '1' url: https://www.pnas.org/content/114/19/4911 month: '04' oa: 1 oa_version: Published Version page: 4911-4914 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Numerical evidence for thermally induced monopoles type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 114 year: '2017' ... --- _id: '8018' abstract: - lang: eng text: 'Nervous systems use excitatory cell assemblies to encode and represent sensory percepts. Similarly, synaptically connected cell assemblies or "engrams" are thought to represent memories of past experience. Multiple lines of recent evidence indicate that brain systems create and use inhibitory replicas of excitatory representations for important cognitive functions. Such matched "inhibitory engrams" can form through homeostatic potentiation of inhibition onto postsynaptic cells that show increased levels of excitation. Inhibitory engrams can reduce behavioral responses to familiar stimuli, thereby resulting in behavioral habituation. In addition, by preventing inappropriate activation of excitatory memory engrams, inhibitory engrams can make memories quiescent, stored in a latent form that is available for context-relevant activation. In neural networks with balanced excitatory and inhibitory engrams, the release of innate responses and recall of associative memories can occur through focused disinhibition. Understanding mechanisms that regulate the formation and expression of inhibitory engrams in vivo may help not only to explain key features of cognition but also to provide insight into transdiagnostic traits associated with psychiatric conditions such as autism, schizophrenia, and posttraumatic stress disorder. ' article_processing_charge: No article_type: original author: - first_name: Helen C. full_name: Barron, Helen C. last_name: Barron - first_name: Tim P full_name: Vogels, Tim P id: CB6FF8D2-008F-11EA-8E08-2637E6697425 last_name: Vogels orcid: 0000-0003-3295-6181 - first_name: Timothy E. full_name: Behrens, Timothy E. last_name: Behrens - first_name: Mani full_name: Ramaswami, Mani last_name: Ramaswami citation: ama: Barron HC, Vogels TP, Behrens TE, Ramaswami M. Inhibitory engrams in perception and memory. Proceedings of the National Academy of Sciences. 2017;114(26):6666-6674. doi:10.1073/pnas.1701812114 apa: Barron, H. C., Vogels, T. P., Behrens, T. E., & Ramaswami, M. (2017). Inhibitory engrams in perception and memory. Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1701812114 chicago: Barron, Helen C., Tim P Vogels, Timothy E. Behrens, and Mani Ramaswami. “Inhibitory Engrams in Perception and Memory.” Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences, 2017. https://doi.org/10.1073/pnas.1701812114. ieee: H. C. Barron, T. P. Vogels, T. E. Behrens, and M. Ramaswami, “Inhibitory engrams in perception and memory,” Proceedings of the National Academy of Sciences, vol. 114, no. 26. Proceedings of the National Academy of Sciences, pp. 6666–6674, 2017. ista: Barron HC, Vogels TP, Behrens TE, Ramaswami M. 2017. Inhibitory engrams in perception and memory. Proceedings of the National Academy of Sciences. 114(26), 6666–6674. mla: Barron, Helen C., et al. “Inhibitory Engrams in Perception and Memory.” Proceedings of the National Academy of Sciences, vol. 114, no. 26, Proceedings of the National Academy of Sciences, 2017, pp. 6666–74, doi:10.1073/pnas.1701812114. short: H.C. Barron, T.P. Vogels, T.E. Behrens, M. Ramaswami, Proceedings of the National Academy of Sciences 114 (2017) 6666–6674. date_created: 2020-06-25T12:56:58Z date_published: 2017-06-27T00:00:00Z date_updated: 2021-01-12T08:16:33Z day: '27' doi: 10.1073/pnas.1701812114 extern: '1' external_id: pmid: - '28611219' intvolume: ' 114' issue: '26' language: - iso: eng main_file_link: - open_access: '1' url: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5495250/ month: '06' oa: 1 oa_version: Published Version page: 6666-6674 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' status: public title: Inhibitory engrams in perception and memory type: journal_article user_id: D865714E-FA4E-11E9-B85B-F5C5E5697425 volume: 114 year: '2017' ... --- _id: '15157' abstract: - lang: eng text: The basic helix–loop–helix PAS domain (bHLH-PAS) transcription factor CLOCK:BMAL1 (brain and muscle Arnt-like protein 1) sits at the core of the mammalian circadian transcription/translation feedback loop. Precise control of CLOCK:BMAL1 activity by coactivators and repressors establishes the ∼24-h periodicity of gene expression. Formation of a repressive complex, defined by the core clock proteins cryptochrome 1 (CRY1):CLOCK:BMAL1, plays an important role controlling the switch from repression to activation each day. Here we show that CRY1 binds directly to the PAS domain core of CLOCK:BMAL1, driven primarily by interaction with the CLOCK PAS-B domain. Integrative modeling and solution X-ray scattering studies unambiguously position a key loop of the CLOCK PAS-B domain in the secondary pocket of CRY1, analogous to the antenna chromophore-binding pocket of photolyase. CRY1 docks onto the transcription factor alongside the PAS domains, extending above the DNA-binding bHLH domain. Single point mutations at the interface on either CRY1 or CLOCK disrupt formation of the ternary complex, highlighting the importance of this interface for direct regulation of CLOCK:BMAL1 activity by CRY1. article_processing_charge: No article_type: original author: - first_name: Alicia Kathleen full_name: Michael, Alicia Kathleen id: 6437c950-2a03-11ee-914d-d6476dd7b75c last_name: Michael - first_name: Jennifer L. full_name: Fribourgh, Jennifer L. last_name: Fribourgh - first_name: Yogarany full_name: Chelliah, Yogarany last_name: Chelliah - first_name: Colby R. full_name: Sandate, Colby R. last_name: Sandate - first_name: Greg L. full_name: Hura, Greg L. last_name: Hura - first_name: Dina full_name: Schneidman-Duhovny, Dina last_name: Schneidman-Duhovny - first_name: Sarvind M. full_name: Tripathi, Sarvind M. last_name: Tripathi - first_name: Joseph S. full_name: Takahashi, Joseph S. last_name: Takahashi - first_name: Carrie L. full_name: Partch, Carrie L. last_name: Partch citation: ama: Michael AK, Fribourgh JL, Chelliah Y, et al. Formation of a repressive complex in the mammalian circadian clock is mediated by the secondary pocket of CRY1. Proceedings of the National Academy of Sciences. 2017;114(7):1560-1565. doi:10.1073/pnas.1615310114 apa: Michael, A. K., Fribourgh, J. L., Chelliah, Y., Sandate, C. R., Hura, G. L., Schneidman-Duhovny, D., … Partch, C. L. (2017). Formation of a repressive complex in the mammalian circadian clock is mediated by the secondary pocket of CRY1. Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1615310114 chicago: Michael, Alicia K., Jennifer L. Fribourgh, Yogarany Chelliah, Colby R. Sandate, Greg L. Hura, Dina Schneidman-Duhovny, Sarvind M. Tripathi, Joseph S. Takahashi, and Carrie L. Partch. “Formation of a Repressive Complex in the Mammalian Circadian Clock Is Mediated by the Secondary Pocket of CRY1.” Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences, 2017. https://doi.org/10.1073/pnas.1615310114. ieee: A. K. Michael et al., “Formation of a repressive complex in the mammalian circadian clock is mediated by the secondary pocket of CRY1,” Proceedings of the National Academy of Sciences, vol. 114, no. 7. Proceedings of the National Academy of Sciences, pp. 1560–1565, 2017. ista: Michael AK, Fribourgh JL, Chelliah Y, Sandate CR, Hura GL, Schneidman-Duhovny D, Tripathi SM, Takahashi JS, Partch CL. 2017. Formation of a repressive complex in the mammalian circadian clock is mediated by the secondary pocket of CRY1. Proceedings of the National Academy of Sciences. 114(7), 1560–1565. mla: Michael, Alicia K., et al. “Formation of a Repressive Complex in the Mammalian Circadian Clock Is Mediated by the Secondary Pocket of CRY1.” Proceedings of the National Academy of Sciences, vol. 114, no. 7, Proceedings of the National Academy of Sciences, 2017, pp. 1560–65, doi:10.1073/pnas.1615310114. short: A.K. Michael, J.L. Fribourgh, Y. Chelliah, C.R. Sandate, G.L. Hura, D. Schneidman-Duhovny, S.M. Tripathi, J.S. Takahashi, C.L. Partch, Proceedings of the National Academy of Sciences 114 (2017) 1560–1565. date_created: 2024-03-21T07:56:50Z date_published: 2017-01-31T00:00:00Z date_updated: 2024-03-25T12:12:23Z day: '31' doi: 10.1073/pnas.1615310114 extern: '1' external_id: pmid: - '28143926' intvolume: ' 114' issue: '7' keyword: - Multidisciplinary language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1073/pnas.1615310114 month: '01' oa: 1 oa_version: Published Version page: 1560-1565 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Formation of a repressive complex in the mammalian circadian clock is mediated by the secondary pocket of CRY1 type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 114 year: '2017' ... --- _id: '12618' abstract: - lang: eng text: Mountain ranges are the world’s natural water towers and provide water resources for millions of people. However, their hydrological balance and possible future changes in river flow remain poorly understood because of high meteorological variability, physical inaccessibility, and the complex interplay between climate, cryosphere, and hydrological processes. Here, we use a state-of-the art glacio-hydrological model informed by data from high-altitude observations and the latest climate change scenarios to quantify the climate change impact on water resources of two contrasting catchments vulnerable to changes in the cryosphere. The two study catchments are located in the Central Andes of Chile and in the Nepalese Himalaya in close vicinity of densely populated areas. Although both sites reveal a strong decrease in glacier area, they show a remarkably different hydrological response to projected climate change. In the Juncal catchment in Chile, runoff is likely to sharply decrease in the future and the runoff seasonality is sensitive to projected climatic changes. In the Langtang catchment in Nepal, future water availability is on the rise for decades to come with limited shifts between seasons. Owing to the high spatiotemporal resolution of the simulations and process complexity included in the modeling, the response times and the mechanisms underlying the variations in glacier area and river flow can be well constrained. The projections indicate that climate change adaptation in Central Chile should focus on dealing with a reduction in water availability, whereas in Nepal preparedness for flood extremes should be the policy priority. article_processing_charge: No article_type: original author: - first_name: Silvan full_name: Ragettli, Silvan last_name: Ragettli - first_name: Walter W. full_name: Immerzeel, Walter W. last_name: Immerzeel - first_name: Francesca full_name: Pellicciotti, Francesca id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70 last_name: Pellicciotti citation: ama: Ragettli S, Immerzeel WW, Pellicciotti F. Contrasting climate change impact on river flows from high-altitude catchments in the Himalayan and Andes Mountains. PNAS. 2016;113(33):9222-9227. doi:10.1073/pnas.1606526113 apa: Ragettli, S., Immerzeel, W. W., & Pellicciotti, F. (2016). Contrasting climate change impact on river flows from high-altitude catchments in the Himalayan and Andes Mountains. PNAS. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1606526113 chicago: Ragettli, Silvan, Walter W. Immerzeel, and Francesca Pellicciotti. “Contrasting Climate Change Impact on River Flows from High-Altitude Catchments in the Himalayan and Andes Mountains.” PNAS. Proceedings of the National Academy of Sciences, 2016. https://doi.org/10.1073/pnas.1606526113. ieee: S. Ragettli, W. W. Immerzeel, and F. Pellicciotti, “Contrasting climate change impact on river flows from high-altitude catchments in the Himalayan and Andes Mountains,” PNAS, vol. 113, no. 33. Proceedings of the National Academy of Sciences, pp. 9222–9227, 2016. ista: Ragettli S, Immerzeel WW, Pellicciotti F. 2016. Contrasting climate change impact on river flows from high-altitude catchments in the Himalayan and Andes Mountains. PNAS. 113(33), 9222–9227. mla: Ragettli, Silvan, et al. “Contrasting Climate Change Impact on River Flows from High-Altitude Catchments in the Himalayan and Andes Mountains.” PNAS, vol. 113, no. 33, Proceedings of the National Academy of Sciences, 2016, pp. 9222–27, doi:10.1073/pnas.1606526113. short: S. Ragettli, W.W. Immerzeel, F. Pellicciotti, PNAS 113 (2016) 9222–9227. date_created: 2023-02-20T08:14:58Z date_published: 2016-08-01T00:00:00Z date_updated: 2023-02-24T10:48:43Z day: '01' doi: 10.1073/pnas.1606526113 extern: '1' external_id: pmid: - '27482082' intvolume: ' 113' issue: '33' keyword: - Multidisciplinary language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1073/pnas.1606526113 month: '08' oa: 1 oa_version: Published Version page: 9222-9227 pmid: 1 publication: PNAS publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Contrasting climate change impact on river flows from high-altitude catchments in the Himalayan and Andes Mountains type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 113 year: '2016' ... --- _id: '9477' abstract: - lang: eng text: Cytosine methylation is a DNA modification with important regulatory functions in eukaryotes. In flowering plants, sexual reproduction is accompanied by extensive DNA demethylation, which is required for proper gene expression in the endosperm, a nutritive extraembryonic seed tissue. Endosperm arises from a fusion of a sperm cell carried in the pollen and a female central cell. Endosperm DNA demethylation is observed specifically on the chromosomes inherited from the central cell in Arabidopsis thaliana, rice, and maize, and requires the DEMETER DNA demethylase in Arabidopsis. DEMETER is expressed in the central cell before fertilization, suggesting that endosperm demethylation patterns are inherited from the central cell. Down-regulation of the MET1 DNA methyltransferase has also been proposed to contribute to central cell demethylation. However, with the exception of three maize genes, central cell DNA methylation has not been directly measured, leaving the origin and mechanism of endosperm demethylation uncertain. Here, we report genome-wide analysis of DNA methylation in the central cells of Arabidopsis and rice—species that diverged 150 million years ago—as well as in rice egg cells. We find that DNA demethylation in both species is initiated in central cells, which requires DEMETER in Arabidopsis. However, we do not observe a global reduction of CG methylation that would be indicative of lowered MET1 activity; on the contrary, CG methylation efficiency is elevated in female gametes compared with nonsexual tissues. Our results demonstrate that locus-specific, active DNA demethylation in the central cell is the origin of maternal chromosome hypomethylation in the endosperm. article_processing_charge: No article_type: original author: - first_name: Kyunghyuk full_name: Park, Kyunghyuk last_name: Park - first_name: M. Yvonne full_name: Kim, M. Yvonne last_name: Kim - first_name: Martin full_name: Vickers, Martin last_name: Vickers - first_name: Jin-Sup full_name: Park, Jin-Sup last_name: Park - first_name: Youbong full_name: Hyun, Youbong last_name: Hyun - first_name: Takashi full_name: Okamoto, Takashi last_name: Okamoto - first_name: Daniel full_name: Zilberman, Daniel id: 6973db13-dd5f-11ea-814e-b3e5455e9ed1 last_name: Zilberman orcid: 0000-0002-0123-8649 - first_name: Robert L. full_name: Fischer, Robert L. last_name: Fischer - first_name: Xiaoqi full_name: Feng, Xiaoqi id: e0164712-22ee-11ed-b12a-d80fcdf35958 last_name: Feng orcid: 0000-0002-4008-1234 - first_name: Yeonhee full_name: Choi, Yeonhee last_name: Choi - first_name: Stefan full_name: Scholten, Stefan last_name: Scholten citation: ama: Park K, Kim MY, Vickers M, et al. DNA demethylation is initiated in the central cells of Arabidopsis and rice. Proceedings of the National Academy of Sciences. 2016;113(52):15138-15143. doi:10.1073/pnas.1619047114 apa: Park, K., Kim, M. Y., Vickers, M., Park, J.-S., Hyun, Y., Okamoto, T., … Scholten, S. (2016). DNA demethylation is initiated in the central cells of Arabidopsis and rice. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.1619047114 chicago: Park, Kyunghyuk, M. Yvonne Kim, Martin Vickers, Jin-Sup Park, Youbong Hyun, Takashi Okamoto, Daniel Zilberman, et al. “DNA Demethylation Is Initiated in the Central Cells of Arabidopsis and Rice.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2016. https://doi.org/10.1073/pnas.1619047114. ieee: K. Park et al., “DNA demethylation is initiated in the central cells of Arabidopsis and rice,” Proceedings of the National Academy of Sciences, vol. 113, no. 52. National Academy of Sciences, pp. 15138–15143, 2016. ista: Park K, Kim MY, Vickers M, Park J-S, Hyun Y, Okamoto T, Zilberman D, Fischer RL, Feng X, Choi Y, Scholten S. 2016. DNA demethylation is initiated in the central cells of Arabidopsis and rice. Proceedings of the National Academy of Sciences. 113(52), 15138–15143. mla: Park, Kyunghyuk, et al. “DNA Demethylation Is Initiated in the Central Cells of Arabidopsis and Rice.” Proceedings of the National Academy of Sciences, vol. 113, no. 52, National Academy of Sciences, 2016, pp. 15138–43, doi:10.1073/pnas.1619047114. short: K. Park, M.Y. Kim, M. Vickers, J.-S. Park, Y. Hyun, T. Okamoto, D. Zilberman, R.L. Fischer, X. Feng, Y. Choi, S. Scholten, Proceedings of the National Academy of Sciences 113 (2016) 15138–15143. date_created: 2021-06-07T07:10:59Z date_published: 2016-12-27T00:00:00Z date_updated: 2023-05-08T11:00:07Z day: '27' department: - _id: DaZi - _id: XiFe doi: 10.1073/pnas.1619047114 extern: '1' external_id: pmid: - '27956642' intvolume: ' 113' issue: '52' keyword: - Multidisciplinary language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1073/pnas.1619047114 month: '12' oa: 1 oa_version: Published Version page: 15138-15143 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: DNA demethylation is initiated in the central cells of Arabidopsis and rice type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 113 year: '2016' ... --- _id: '9473' abstract: - lang: eng text: Cytosine DNA methylation regulates the expression of eukaryotic genes and transposons. Methylation is copied by methyltransferases after DNA replication, which results in faithful transmission of methylation patterns during cell division and, at least in flowering plants, across generations. Transgenerational inheritance is mediated by a small group of cells that includes gametes and their progenitors. However, methylation is usually analyzed in somatic tissues that do not contribute to the next generation, and the mechanisms of transgenerational inheritance are inferred from such studies. To gain a better understanding of how DNA methylation is inherited, we analyzed purified Arabidopsis thaliana sperm and vegetative cells-the cell types that comprise pollen-with mutations in the DRM, CMT2, and CMT3 methyltransferases. We find that DNA methylation dependency on these enzymes is similar in sperm, vegetative cells, and somatic tissues, although DRM activity extends into heterochromatin in vegetative cells, likely reflecting transcription of heterochromatic transposons in this cell type. We also show that lack of histone H1, which elevates heterochromatic DNA methylation in somatic tissues, does not have this effect in pollen. Instead, levels of CG methylation in wild-type sperm and vegetative cells, as well as in wild-type microspores from which both pollen cell types originate, are substantially higher than in wild-type somatic tissues and similar to those of H1-depleted roots. Our results demonstrate that the mechanisms of methylation maintenance are similar between pollen and somatic cells, but the efficiency of CG methylation is higher in pollen, allowing methylation patterns to be accurately inherited across generations. article_processing_charge: No article_type: original author: - first_name: Ping-Hung full_name: Hsieh, Ping-Hung last_name: Hsieh - first_name: Shengbo full_name: He, Shengbo last_name: He - first_name: Toby full_name: Buttress, Toby last_name: Buttress - first_name: Hongbo full_name: Gao, Hongbo last_name: Gao - first_name: Matthew full_name: Couchman, Matthew last_name: Couchman - first_name: Robert L. full_name: Fischer, Robert L. last_name: Fischer - first_name: Daniel full_name: Zilberman, Daniel id: 6973db13-dd5f-11ea-814e-b3e5455e9ed1 last_name: Zilberman orcid: 0000-0002-0123-8649 - first_name: Xiaoqi full_name: Feng, Xiaoqi id: e0164712-22ee-11ed-b12a-d80fcdf35958 last_name: Feng orcid: 0000-0002-4008-1234 citation: ama: Hsieh P-H, He S, Buttress T, et al. Arabidopsis male sexual lineage exhibits more robust maintenance of CG methylation than somatic tissues. Proceedings of the National Academy of Sciences. 2016;113(52):15132-15137. doi:10.1073/pnas.1619074114 apa: Hsieh, P.-H., He, S., Buttress, T., Gao, H., Couchman, M., Fischer, R. L., … Feng, X. (2016). Arabidopsis male sexual lineage exhibits more robust maintenance of CG methylation than somatic tissues. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.1619074114 chicago: Hsieh, Ping-Hung, Shengbo He, Toby Buttress, Hongbo Gao, Matthew Couchman, Robert L. Fischer, Daniel Zilberman, and Xiaoqi Feng. “Arabidopsis Male Sexual Lineage Exhibits More Robust Maintenance of CG Methylation than Somatic Tissues.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2016. https://doi.org/10.1073/pnas.1619074114. ieee: P.-H. Hsieh et al., “Arabidopsis male sexual lineage exhibits more robust maintenance of CG methylation than somatic tissues,” Proceedings of the National Academy of Sciences, vol. 113, no. 52. National Academy of Sciences, pp. 15132–15137, 2016. ista: Hsieh P-H, He S, Buttress T, Gao H, Couchman M, Fischer RL, Zilberman D, Feng X. 2016. Arabidopsis male sexual lineage exhibits more robust maintenance of CG methylation than somatic tissues. Proceedings of the National Academy of Sciences. 113(52), 15132–15137. mla: Hsieh, Ping-Hung, et al. “Arabidopsis Male Sexual Lineage Exhibits More Robust Maintenance of CG Methylation than Somatic Tissues.” Proceedings of the National Academy of Sciences, vol. 113, no. 52, National Academy of Sciences, 2016, pp. 15132–37, doi:10.1073/pnas.1619074114. short: P.-H. Hsieh, S. He, T. Buttress, H. Gao, M. Couchman, R.L. Fischer, D. Zilberman, X. Feng, Proceedings of the National Academy of Sciences 113 (2016) 15132–15137. date_created: 2021-06-07T06:21:39Z date_published: 2016-12-27T00:00:00Z date_updated: 2023-05-08T11:00:40Z day: '27' department: - _id: DaZi - _id: XiFe doi: 10.1073/pnas.1619074114 extern: '1' external_id: pmid: - '27956643' intvolume: ' 113' issue: '52' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1073/pnas.1619074114 month: '12' oa: 1 oa_version: Published Version page: 15132-15137 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Arabidopsis male sexual lineage exhibits more robust maintenance of CG methylation than somatic tissues type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 113 year: '2016' ... --- _id: '14304' abstract: - lang: eng text: Despite the recent rapid progress in cryo-electron microscopy (cryo-EM), there still exist ample opportunities for improvement in sample preparation. Macromolecular complexes may disassociate or adopt nonrandom orientations against the extended air–water interface that exists for a short time before the sample is frozen. We designed a hollow support structure using 3D DNA origami to protect complexes from the detrimental effects of cryo-EM sample preparation. For a first proof-of-principle, we concentrated on the transcription factor p53, which binds to specific DNA sequences on double-stranded DNA. The support structures spontaneously form monolayers of preoriented particles in a thin film of water, and offer advantages in particle picking and sorting. By controlling the position of the binding sequence on a single helix that spans the hollow support structure, we also sought to control the orientation of individual p53 complexes. Although the latter did not yet yield the desired results, the support structures did provide partial information about the relative orientations of individual p53 complexes. We used this information to calculate a tomographic 3D reconstruction, and refined this structure to a final resolution of ∼15 Å. This structure settles an ongoing debate about the symmetry of the p53 tetramer bound to DNA. article_processing_charge: No article_type: original author: - first_name: Thomas G. full_name: Martin, Thomas G. last_name: Martin - first_name: Tanmay A. M. full_name: Bharat, Tanmay A. M. last_name: Bharat - first_name: Andreas C. full_name: Joerger, Andreas C. last_name: Joerger - first_name: Xiao-chen full_name: Bai, Xiao-chen last_name: Bai - first_name: Florian M full_name: Praetorius, Florian M id: dfec9381-4341-11ee-8fd8-faa02bba7d62 last_name: Praetorius - first_name: Alan R. full_name: Fersht, Alan R. last_name: Fersht - first_name: Hendrik full_name: Dietz, Hendrik last_name: Dietz - first_name: Sjors H. W. full_name: Scheres, Sjors H. W. last_name: Scheres citation: ama: Martin TG, Bharat TAM, Joerger AC, et al. Design of a molecular support for cryo-EM structure determination. PNAS. 2016;113(47):E7456-E7463. doi:10.1073/pnas.1612720113 apa: Martin, T. G., Bharat, T. A. M., Joerger, A. C., Bai, X., Praetorius, F. M., Fersht, A. R., … Scheres, S. H. W. (2016). Design of a molecular support for cryo-EM structure determination. PNAS. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1612720113 chicago: Martin, Thomas G., Tanmay A. M. Bharat, Andreas C. Joerger, Xiao-chen Bai, Florian M Praetorius, Alan R. Fersht, Hendrik Dietz, and Sjors H. W. Scheres. “Design of a Molecular Support for Cryo-EM Structure Determination.” PNAS. Proceedings of the National Academy of Sciences, 2016. https://doi.org/10.1073/pnas.1612720113. ieee: T. G. Martin et al., “Design of a molecular support for cryo-EM structure determination,” PNAS, vol. 113, no. 47. Proceedings of the National Academy of Sciences, pp. E7456–E7463, 2016. ista: Martin TG, Bharat TAM, Joerger AC, Bai X, Praetorius FM, Fersht AR, Dietz H, Scheres SHW. 2016. Design of a molecular support for cryo-EM structure determination. PNAS. 113(47), E7456–E7463. mla: Martin, Thomas G., et al. “Design of a Molecular Support for Cryo-EM Structure Determination.” PNAS, vol. 113, no. 47, Proceedings of the National Academy of Sciences, 2016, pp. E7456–63, doi:10.1073/pnas.1612720113. short: T.G. Martin, T.A.M. Bharat, A.C. Joerger, X. Bai, F.M. Praetorius, A.R. Fersht, H. Dietz, S.H.W. Scheres, PNAS 113 (2016) E7456–E7463. date_created: 2023-09-06T12:53:48Z date_published: 2016-10-13T00:00:00Z date_updated: 2023-11-07T11:53:06Z day: '13' doi: 10.1073/pnas.1612720113 extern: '1' external_id: pmid: - '27821763' intvolume: ' 113' issue: '47' language: - iso: eng month: '10' oa_version: Published Version page: E7456-E7463 pmid: 1 publication: PNAS publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Design of a molecular support for cryo-EM structure determination type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 113 year: '2016' ... --- _id: '10382' abstract: - lang: eng text: 'Protein oligomers have been implicated as toxic agents in a wide range of amyloid-related diseases. However, it has remained unsolved whether the oligomers are a necessary step in the formation of amyloid fibrils or just a dangerous byproduct. Analogously, it has not been resolved if the amyloid nucleation process is a classical one-step nucleation process or a two-step process involving prenucleation clusters. We use coarse-grained computer simulations to study the effect of nonspecific attractions between peptides on the primary nucleation process underlying amyloid fibrillization. We find that, for peptides that do not attract, the classical one-step nucleation mechanism is possible but only at nonphysiologically high peptide concentrations. At low peptide concentrations, which mimic the physiologically relevant regime, attractive interpeptide interactions are essential for fibril formation. Nucleation then inevitably takes place through a two-step mechanism involving prefibrillar oligomers. We show that oligomers not only help peptides meet each other but also, create an environment that facilitates the conversion of monomers into the β-sheet–rich form characteristic of fibrils. Nucleation typically does not proceed through the most prevalent oligomers but through an oligomer size that is only observed in rare fluctuations, which is why such aggregates might be hard to capture experimentally. Finally, we find that the nucleation of amyloid fibrils cannot be described by classical nucleation theory: in the two-step mechanism, the critical nucleus size increases with increases in both concentration and interpeptide interactions, which is in direct contrast with predictions from classical nucleation theory.' acknowledgement: We thank Michele Vendruscolo, Iskra Staneva, and William M. Jacobs, for helpful discussions. A.Š. acknowledges support from the Human Frontier Science Program and Emmanuel College. Y.C.C. and D.F. are supported by Engineering and Physical Sciences Research Council Programme Grant EP/I001352/1. T.P.J.K. acknowledges the Frances and Augustus Newman Foundation, the European Research Council, and the Biotechnology and Biological Sciences Research Council. D.F. acknowledges European Research Council Advanced Grant 227758. article_processing_charge: No article_type: original author: - first_name: Anđela full_name: Šarić, Anđela id: bf63d406-f056-11eb-b41d-f263a6566d8b last_name: Šarić orcid: 0000-0002-7854-2139 - first_name: Yassmine C. full_name: Chebaro, Yassmine C. last_name: Chebaro - first_name: Tuomas P. J. full_name: Knowles, Tuomas P. J. last_name: Knowles - first_name: Daan full_name: Frenkel, Daan last_name: Frenkel citation: ama: Šarić A, Chebaro YC, Knowles TPJ, Frenkel D. Crucial role of nonspecific interactions in amyloid nucleation. Proceedings of the National Academy of Sciences. 2014;111(50):17869-17874. doi:10.1073/pnas.1410159111 apa: Šarić, A., Chebaro, Y. C., Knowles, T. P. J., & Frenkel, D. (2014). Crucial role of nonspecific interactions in amyloid nucleation. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.1410159111 chicago: Šarić, Anđela, Yassmine C. Chebaro, Tuomas P. J. Knowles, and Daan Frenkel. “Crucial Role of Nonspecific Interactions in Amyloid Nucleation.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2014. https://doi.org/10.1073/pnas.1410159111. ieee: A. Šarić, Y. C. Chebaro, T. P. J. Knowles, and D. Frenkel, “Crucial role of nonspecific interactions in amyloid nucleation,” Proceedings of the National Academy of Sciences, vol. 111, no. 50. National Academy of Sciences, pp. 17869–17874, 2014. ista: Šarić A, Chebaro YC, Knowles TPJ, Frenkel D. 2014. Crucial role of nonspecific interactions in amyloid nucleation. Proceedings of the National Academy of Sciences. 111(50), 17869–17874. mla: Šarić, Anđela, et al. “Crucial Role of Nonspecific Interactions in Amyloid Nucleation.” Proceedings of the National Academy of Sciences, vol. 111, no. 50, National Academy of Sciences, 2014, pp. 17869–74, doi:10.1073/pnas.1410159111. short: A. Šarić, Y.C. Chebaro, T.P.J. Knowles, D. Frenkel, Proceedings of the National Academy of Sciences 111 (2014) 17869–17874. date_created: 2021-11-29T13:09:53Z date_published: 2014-12-01T00:00:00Z date_updated: 2021-11-29T13:29:05Z day: '01' doi: 10.1073/pnas.1410159111 extern: '1' external_id: arxiv: - '1412.0897' pmid: - '25453085' intvolume: ' 111' issue: '50' keyword: - multidisciplinary language: - iso: eng main_file_link: - open_access: '1' url: https://www.pnas.org/content/111/50/17869 month: '12' oa: 1 oa_version: Published Version page: 17869-17874 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Crucial role of nonspecific interactions in amyloid nucleation type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 111 year: '2014' ... --- _id: '8021' abstract: - lang: eng text: 'Most excitatory inputs in the mammalian brain are made on dendritic spines, rather than on dendritic shafts. Spines compartmentalize calcium, and this biochemical isolation can underlie input-specific synaptic plasticity, providing a raison d''etre for spines. However, recent results indicate that the spine can experience a membrane potential different from that in the parent dendrite, as though the spine neck electrically isolated the spine. Here we use two-photon calcium imaging of mouse neocortical pyramidal neurons to analyze the correlation between the morphologies of spines activated under minimal synaptic stimulation and the excitatory postsynaptic potentials they generate. We find that excitatory postsynaptic potential amplitudes are inversely correlated with spine neck lengths. Furthermore, a spike timing-dependent plasticity protocol, in which two-photon glutamate uncaging over a spine is paired with postsynaptic spikes, produces rapid shrinkage of the spine neck and concomitant increases in the amplitude of the evoked spine potentials. Using numerical simulations, we explore the parameter regimes for the spine neck resistance and synaptic conductance changes necessary to explain our observations. Our data, directly correlating synaptic and morphological plasticity, imply that long-necked spines have small or negligible somatic voltage contributions, but that, upon synaptic stimulation paired with postsynaptic activity, they can shorten their necks and increase synaptic efficacy, thus changing the input/output gain of pyramidal neurons. ' article_processing_charge: No article_type: original author: - first_name: R. full_name: Araya, R. last_name: Araya - first_name: Tim P full_name: Vogels, Tim P id: CB6FF8D2-008F-11EA-8E08-2637E6697425 last_name: Vogels orcid: 0000-0003-3295-6181 - first_name: R. full_name: Yuste, R. last_name: Yuste citation: ama: Araya R, Vogels TP, Yuste R. Activity-dependent dendritic spine neck changes are correlated with synaptic strength. Proceedings of the National Academy of Sciences. 2014;111(28):E2895-E2904. doi:10.1073/pnas.1321869111 apa: Araya, R., Vogels, T. P., & Yuste, R. (2014). Activity-dependent dendritic spine neck changes are correlated with synaptic strength. Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1321869111 chicago: Araya, R., Tim P Vogels, and R. Yuste. “Activity-Dependent Dendritic Spine Neck Changes Are Correlated with Synaptic Strength.” Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences, 2014. https://doi.org/10.1073/pnas.1321869111. ieee: R. Araya, T. P. Vogels, and R. Yuste, “Activity-dependent dendritic spine neck changes are correlated with synaptic strength,” Proceedings of the National Academy of Sciences, vol. 111, no. 28. Proceedings of the National Academy of Sciences, pp. E2895–E2904, 2014. ista: Araya R, Vogels TP, Yuste R. 2014. Activity-dependent dendritic spine neck changes are correlated with synaptic strength. Proceedings of the National Academy of Sciences. 111(28), E2895–E2904. mla: Araya, R., et al. “Activity-Dependent Dendritic Spine Neck Changes Are Correlated with Synaptic Strength.” Proceedings of the National Academy of Sciences, vol. 111, no. 28, Proceedings of the National Academy of Sciences, 2014, pp. E2895–904, doi:10.1073/pnas.1321869111. short: R. Araya, T.P. Vogels, R. Yuste, Proceedings of the National Academy of Sciences 111 (2014) E2895–E2904. date_created: 2020-06-25T13:06:24Z date_published: 2014-07-15T00:00:00Z date_updated: 2021-01-12T08:16:34Z day: '15' doi: 10.1073/pnas.1321869111 extern: '1' external_id: pmid: - '24982196' intvolume: ' 111' issue: '28' language: - iso: eng main_file_link: - open_access: '1' url: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4104910/ month: '07' oa: 1 oa_version: Published Version page: E2895-E2904 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' status: public title: Activity-dependent dendritic spine neck changes are correlated with synaptic strength type: journal_article user_id: D865714E-FA4E-11E9-B85B-F5C5E5697425 volume: 111 year: '2014' ... --- _id: '9479' abstract: - lang: eng text: Centromeres mediate chromosome segregation and are defined by the centromere-specific histone H3 variant (CenH3)/centromere protein A (CENP-A). Removal of CenH3 from centromeres is a general property of terminally differentiated cells, and the persistence of CenH3 increases the risk of diseases such as cancer. However, active mechanisms of centromere disassembly are unknown. Nondividing Arabidopsis pollen vegetative cells, which transport engulfed sperm by extended tip growth, undergo loss of CenH3; centromeric heterochromatin decondensation; and bulk activation of silent rRNA genes, accompanied by their translocation into the nucleolus. Here, we show that these processes are blocked by mutations in the evolutionarily conserved AAA-ATPase molecular chaperone, CDC48A, homologous to yeast Cdc48 and human p97 proteins, both of which are implicated in ubiquitin/small ubiquitin-like modifier (SUMO)-targeted protein degradation. We demonstrate that CDC48A physically associates with its heterodimeric cofactor UFD1-NPL4, known to bind ubiquitin and SUMO, as well as with SUMO1-modified CenH3 and mutations in NPL4 phenocopy cdc48a mutations. In WT vegetative cell nuclei, genetically unlinked ribosomal DNA (rDNA) loci are uniquely clustered together within the nucleolus and all major rRNA gene variants, including those rDNA variants silenced in leaves, are transcribed. In cdc48a mutant vegetative cell nuclei, however, these rDNA loci frequently colocalized with condensed centromeric heterochromatin at the external periphery of the nucleolus. Our results indicate that the CDC48ANPL4 complex actively removes sumoylated CenH3 from centromeres and disrupts centromeric heterochromatin to release bulk rRNA genes into the nucleolus for ribosome production, which fuels single nucleus-driven pollen tube growth and is essential for plant reproduction. article_processing_charge: No article_type: original author: - first_name: Zsuzsanna full_name: Mérai, Zsuzsanna last_name: Mérai - first_name: Nina full_name: Chumak, Nina last_name: Chumak - first_name: Marcelina full_name: García-Aguilar, Marcelina last_name: García-Aguilar - first_name: Tzung-Fu full_name: Hsieh, Tzung-Fu last_name: Hsieh - first_name: Toshiro full_name: Nishimura, Toshiro last_name: Nishimura - first_name: Vera K. full_name: Schoft, Vera K. last_name: Schoft - first_name: János full_name: Bindics, János last_name: Bindics - first_name: Lucyna full_name: Ślusarz, Lucyna last_name: Ślusarz - first_name: Stéphanie full_name: Arnoux, Stéphanie last_name: Arnoux - first_name: Susanne full_name: Opravil, Susanne last_name: Opravil - first_name: Karl full_name: Mechtler, Karl last_name: Mechtler - first_name: Daniel full_name: Zilberman, Daniel id: 6973db13-dd5f-11ea-814e-b3e5455e9ed1 last_name: Zilberman orcid: 0000-0002-0123-8649 - first_name: Robert L. full_name: Fischer, Robert L. last_name: Fischer - first_name: Hisashi full_name: Tamaru, Hisashi last_name: Tamaru citation: ama: Mérai Z, Chumak N, García-Aguilar M, et al. The AAA-ATPase molecular chaperone Cdc48/p97 disassembles sumoylated centromeres, decondenses heterochromatin, and activates ribosomal RNA genes. Proceedings of the National Academy of Sciences. 2014;111(45):16166-16171. doi:10.1073/pnas.1418564111 apa: Mérai, Z., Chumak, N., García-Aguilar, M., Hsieh, T.-F., Nishimura, T., Schoft, V. K., … Tamaru, H. (2014). The AAA-ATPase molecular chaperone Cdc48/p97 disassembles sumoylated centromeres, decondenses heterochromatin, and activates ribosomal RNA genes. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.1418564111 chicago: Mérai, Zsuzsanna, Nina Chumak, Marcelina García-Aguilar, Tzung-Fu Hsieh, Toshiro Nishimura, Vera K. Schoft, János Bindics, et al. “The AAA-ATPase Molecular Chaperone Cdc48/P97 Disassembles Sumoylated Centromeres, Decondenses Heterochromatin, and Activates Ribosomal RNA Genes.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2014. https://doi.org/10.1073/pnas.1418564111. ieee: Z. Mérai et al., “The AAA-ATPase molecular chaperone Cdc48/p97 disassembles sumoylated centromeres, decondenses heterochromatin, and activates ribosomal RNA genes,” Proceedings of the National Academy of Sciences, vol. 111, no. 45. National Academy of Sciences, pp. 16166–16171, 2014. ista: Mérai Z, Chumak N, García-Aguilar M, Hsieh T-F, Nishimura T, Schoft VK, Bindics J, Ślusarz L, Arnoux S, Opravil S, Mechtler K, Zilberman D, Fischer RL, Tamaru H. 2014. The AAA-ATPase molecular chaperone Cdc48/p97 disassembles sumoylated centromeres, decondenses heterochromatin, and activates ribosomal RNA genes. Proceedings of the National Academy of Sciences. 111(45), 16166–16171. mla: Mérai, Zsuzsanna, et al. “The AAA-ATPase Molecular Chaperone Cdc48/P97 Disassembles Sumoylated Centromeres, Decondenses Heterochromatin, and Activates Ribosomal RNA Genes.” Proceedings of the National Academy of Sciences, vol. 111, no. 45, National Academy of Sciences, 2014, pp. 16166–71, doi:10.1073/pnas.1418564111. short: Z. Mérai, N. Chumak, M. García-Aguilar, T.-F. Hsieh, T. Nishimura, V.K. Schoft, J. Bindics, L. Ślusarz, S. Arnoux, S. Opravil, K. Mechtler, D. Zilberman, R.L. Fischer, H. Tamaru, Proceedings of the National Academy of Sciences 111 (2014) 16166–16171. date_created: 2021-06-07T07:23:43Z date_published: 2014-11-11T00:00:00Z date_updated: 2021-12-14T08:23:26Z day: '11' department: - _id: DaZi doi: 10.1073/pnas.1418564111 extern: '1' external_id: pmid: - '25344531' intvolume: ' 111' issue: '45' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1073/pnas.1418564111 month: '11' oa: 1 oa_version: Published Version page: 16166-16171 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: The AAA-ATPase molecular chaperone Cdc48/p97 disassembles sumoylated centromeres, decondenses heterochromatin, and activates ribosomal RNA genes type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 111 year: '2014' ... --- _id: '9481' abstract: - lang: eng text: Arabidopsis thaliana endosperm, a transient tissue that nourishes the embryo, exhibits extensive localized DNA demethylation on maternally inherited chromosomes. Demethylation mediates parent-of-origin–specific (imprinted) gene expression but is apparently unnecessary for the extensive accumulation of maternally biased small RNA (sRNA) molecules detected in seeds. Endosperm DNA in the distantly related monocots rice and maize is likewise locally hypomethylated, but whether this hypomethylation is generally parent-of-origin specific is unknown. Imprinted expression of sRNA also remains uninvestigated in monocot seeds. Here, we report high-coverage sequencing of the Kitaake rice cultivar that enabled us to show that localized hypomethylation in rice endosperm occurs solely on the maternal genome, preferring regions of high DNA accessibility. Maternally expressed imprinted genes are enriched for hypomethylation at putative promoter regions and transcriptional termini and paternally expressed genes at promoters and gene bodies, mirroring our recent results in A. thaliana. However, unlike in A. thaliana, rice endosperm sRNA populations are dominated by specific strong sRNA-producing loci, and imprinted 24-nt sRNAs are expressed from both parental genomes and correlate with hypomethylation. Overlaps between imprinted sRNA loci and imprinted genes expressed from opposite alleles suggest that sRNAs may regulate genomic imprinting. Whereas sRNAs in seedling tissues primarily originate from small class II (cut-and-paste) transposable elements, those in endosperm are more uniformly derived, including sequences from other transposon classes, as well as genic and intergenic regions. Our data indicate that the endosperm exhibits a unique pattern of sRNA expression and suggest that localized hypomethylation of maternal endosperm DNA is conserved in flowering plants. article_processing_charge: No article_type: original author: - first_name: Jessica A. full_name: Rodrigues, Jessica A. last_name: Rodrigues - first_name: Randy full_name: Ruan, Randy last_name: Ruan - first_name: Toshiro full_name: Nishimura, Toshiro last_name: Nishimura - first_name: Manoj K. full_name: Sharma, Manoj K. last_name: Sharma - first_name: Rita full_name: Sharma, Rita last_name: Sharma - first_name: Pamela C full_name: Ronald, Pamela C last_name: Ronald - first_name: Robert L. full_name: Fischer, Robert L. last_name: Fischer - first_name: Daniel full_name: Zilberman, Daniel id: 6973db13-dd5f-11ea-814e-b3e5455e9ed1 last_name: Zilberman orcid: 0000-0002-0123-8649 citation: ama: Rodrigues JA, Ruan R, Nishimura T, et al. Imprinted expression of genes and small RNA is associated with localized hypomethylation of the maternal genome in rice endosperm. Proceedings of the National Academy of Sciences. 2013;110(19):7934-7939. doi:10.1073/pnas.1306164110 apa: Rodrigues, J. A., Ruan, R., Nishimura, T., Sharma, M. K., Sharma, R., Ronald, P. C., … Zilberman, D. (2013). Imprinted expression of genes and small RNA is associated with localized hypomethylation of the maternal genome in rice endosperm. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.1306164110 chicago: Rodrigues, Jessica A., Randy Ruan, Toshiro Nishimura, Manoj K. Sharma, Rita Sharma, Pamela C Ronald, Robert L. Fischer, and Daniel Zilberman. “Imprinted Expression of Genes and Small RNA Is Associated with Localized Hypomethylation of the Maternal Genome in Rice Endosperm.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2013. https://doi.org/10.1073/pnas.1306164110. ieee: J. A. Rodrigues et al., “Imprinted expression of genes and small RNA is associated with localized hypomethylation of the maternal genome in rice endosperm,” Proceedings of the National Academy of Sciences, vol. 110, no. 19. National Academy of Sciences, pp. 7934–7939, 2013. ista: Rodrigues JA, Ruan R, Nishimura T, Sharma MK, Sharma R, Ronald PC, Fischer RL, Zilberman D. 2013. Imprinted expression of genes and small RNA is associated with localized hypomethylation of the maternal genome in rice endosperm. Proceedings of the National Academy of Sciences. 110(19), 7934–7939. mla: Rodrigues, Jessica A., et al. “Imprinted Expression of Genes and Small RNA Is Associated with Localized Hypomethylation of the Maternal Genome in Rice Endosperm.” Proceedings of the National Academy of Sciences, vol. 110, no. 19, National Academy of Sciences, 2013, pp. 7934–39, doi:10.1073/pnas.1306164110. short: J.A. Rodrigues, R. Ruan, T. Nishimura, M.K. Sharma, R. Sharma, P.C. Ronald, R.L. Fischer, D. Zilberman, Proceedings of the National Academy of Sciences 110 (2013) 7934–7939. date_created: 2021-06-07T07:31:02Z date_published: 2013-05-07T00:00:00Z date_updated: 2021-12-14T08:26:44Z day: '07' department: - _id: DaZi doi: 10.1073/pnas.1306164110 extern: '1' external_id: pmid: - '23613580' intvolume: ' 110' issue: '19' keyword: - Multidisciplinary language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1073/pnas.1306164110 month: '05' oa: 1 oa_version: Published Version page: 7934-7939 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Imprinted expression of genes and small RNA is associated with localized hypomethylation of the maternal genome in rice endosperm type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 110 year: '2013' ... --- _id: '9483' abstract: - lang: eng text: Imprinted genes are expressed primarily or exclusively from either the maternal or paternal allele, a phenomenon that occurs in flowering plants and mammals. Flowering plant imprinted gene expression has been described primarily in endosperm, a terminal nutritive tissue consumed by the embryo during seed development or after germination. Imprinted expression in Arabidopsis thaliana endosperm is orchestrated by differences in cytosine DNA methylation between the paternal and maternal genomes as well as by Polycomb group proteins. Currently, only 11 imprinted A. thaliana genes are known. Here, we use extensive sequencing of cDNA libraries to identify 9 paternally expressed and 34 maternally expressed imprinted genes in A. thaliana endosperm that are regulated by the DNA-demethylating glycosylase DEMETER, the DNA methyltransferase MET1, and/or the core Polycomb group protein FIE. These genes encode transcription factors, proteins involved in hormone signaling, components of the ubiquitin protein degradation pathway, regulators of histone and DNA methylation, and small RNA pathway proteins. We also identify maternally expressed genes that may be regulated by unknown mechanisms or deposited from maternal tissues. We did not detect any imprinted genes in the embryo. Our results show that imprinted gene expression is an extensive mechanistically complex phenomenon that likely affects multiple aspects of seed development. article_processing_charge: No article_type: original author: - first_name: Tzung-Fu full_name: Hsieh, Tzung-Fu last_name: Hsieh - first_name: Juhyun full_name: Shin, Juhyun last_name: Shin - first_name: Rie full_name: Uzawa, Rie last_name: Uzawa - first_name: Pedro full_name: Silva, Pedro last_name: Silva - first_name: Stephanie full_name: Cohen, Stephanie last_name: Cohen - first_name: Matthew J. full_name: Bauer, Matthew J. last_name: Bauer - first_name: Meryl full_name: Hashimoto, Meryl last_name: Hashimoto - first_name: Ryan C. full_name: Kirkbride, Ryan C. last_name: Kirkbride - first_name: John J. full_name: Harada, John J. last_name: Harada - first_name: Daniel full_name: Zilberman, Daniel id: 6973db13-dd5f-11ea-814e-b3e5455e9ed1 last_name: Zilberman orcid: 0000-0002-0123-8649 - first_name: Robert L. full_name: Fischer, Robert L. last_name: Fischer citation: ama: Hsieh T-F, Shin J, Uzawa R, et al. Regulation of imprinted gene expression in Arabidopsis endosperm. Proceedings of the National Academy of Sciences. 2011;108(5):1755-1762. doi:10.1073/pnas.1019273108 apa: Hsieh, T.-F., Shin, J., Uzawa, R., Silva, P., Cohen, S., Bauer, M. J., … Fischer, R. L. (2011). Regulation of imprinted gene expression in Arabidopsis endosperm. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.1019273108 chicago: Hsieh, Tzung-Fu, Juhyun Shin, Rie Uzawa, Pedro Silva, Stephanie Cohen, Matthew J. Bauer, Meryl Hashimoto, et al. “Regulation of Imprinted Gene Expression in Arabidopsis Endosperm.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2011. https://doi.org/10.1073/pnas.1019273108. ieee: T.-F. Hsieh et al., “Regulation of imprinted gene expression in Arabidopsis endosperm,” Proceedings of the National Academy of Sciences, vol. 108, no. 5. National Academy of Sciences, pp. 1755–1762, 2011. ista: Hsieh T-F, Shin J, Uzawa R, Silva P, Cohen S, Bauer MJ, Hashimoto M, Kirkbride RC, Harada JJ, Zilberman D, Fischer RL. 2011. Regulation of imprinted gene expression in Arabidopsis endosperm. Proceedings of the National Academy of Sciences. 108(5), 1755–1762. mla: Hsieh, Tzung-Fu, et al. “Regulation of Imprinted Gene Expression in Arabidopsis Endosperm.” Proceedings of the National Academy of Sciences, vol. 108, no. 5, National Academy of Sciences, 2011, pp. 1755–62, doi:10.1073/pnas.1019273108. short: T.-F. Hsieh, J. Shin, R. Uzawa, P. Silva, S. Cohen, M.J. Bauer, M. Hashimoto, R.C. Kirkbride, J.J. Harada, D. Zilberman, R.L. Fischer, Proceedings of the National Academy of Sciences 108 (2011) 1755–1762. date_created: 2021-06-07T07:40:38Z date_published: 2011-02-01T00:00:00Z date_updated: 2021-12-14T08:33:49Z day: '01' department: - _id: DaZi doi: 10.1073/pnas.1019273108 extern: '1' external_id: pmid: - '21257907' intvolume: ' 108' issue: '5' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1073/pnas.1019273108 month: '02' oa: 1 oa_version: Published Version page: 1755-1762 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Regulation of imprinted gene expression in Arabidopsis endosperm type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 108 year: '2011' ... --- _id: '14305' abstract: - lang: eng text: Understanding the mechanism of protein folding requires a detailed knowledge of the structural properties of the barriers separating unfolded from native conformations. The S-peptide from ribonuclease S forms its α-helical structure only upon binding to the folded S-protein. We characterized the transition state for this binding-induced folding reaction at high resolution by determining the effect of site-specific backbone thioxylation and side-chain modifications on the kinetics and thermodynamics of the reaction, which allows us to monitor formation of backbone hydrogen bonds and side-chain interactions in the transition state. The experiments reveal that α-helical structure in the S-peptide is absent in the transition state of binding. Recognition between the unfolded S-peptide and the S-protein is mediated by loosely packed hydrophobic side-chain interactions in two well defined regions on the S-peptide. Close packing and helix formation occurs rapidly after binding. Introducing hydrophobic residues at positions outside the recognition region can drastically slow down association. article_processing_charge: No article_type: original author: - first_name: Annett full_name: Bachmann, Annett last_name: Bachmann - first_name: Dirk full_name: Wildemann, Dirk last_name: Wildemann - first_name: Florian M full_name: Praetorius, Florian M id: dfec9381-4341-11ee-8fd8-faa02bba7d62 last_name: Praetorius - first_name: Gunter full_name: Fischer, Gunter last_name: Fischer - first_name: Thomas full_name: Kiefhaber, Thomas last_name: Kiefhaber citation: ama: Bachmann A, Wildemann D, Praetorius FM, Fischer G, Kiefhaber T. Mapping backbone and side-chain interactions in the transition state of a coupled protein folding and binding reaction. PNAS. 2011;108(10):3952-3957. doi:10.1073/pnas.1012668108 apa: Bachmann, A., Wildemann, D., Praetorius, F. M., Fischer, G., & Kiefhaber, T. (2011). Mapping backbone and side-chain interactions in the transition state of a coupled protein folding and binding reaction. PNAS. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1012668108 chicago: Bachmann, Annett, Dirk Wildemann, Florian M Praetorius, Gunter Fischer, and Thomas Kiefhaber. “Mapping Backbone and Side-Chain Interactions in the Transition State of a Coupled Protein Folding and Binding Reaction.” PNAS. Proceedings of the National Academy of Sciences, 2011. https://doi.org/10.1073/pnas.1012668108. ieee: A. Bachmann, D. Wildemann, F. M. Praetorius, G. Fischer, and T. Kiefhaber, “Mapping backbone and side-chain interactions in the transition state of a coupled protein folding and binding reaction,” PNAS, vol. 108, no. 10. Proceedings of the National Academy of Sciences, pp. 3952–3957, 2011. ista: Bachmann A, Wildemann D, Praetorius FM, Fischer G, Kiefhaber T. 2011. Mapping backbone and side-chain interactions in the transition state of a coupled protein folding and binding reaction. PNAS. 108(10), 3952–3957. mla: Bachmann, Annett, et al. “Mapping Backbone and Side-Chain Interactions in the Transition State of a Coupled Protein Folding and Binding Reaction.” PNAS, vol. 108, no. 10, Proceedings of the National Academy of Sciences, 2011, pp. 3952–57, doi:10.1073/pnas.1012668108. short: A. Bachmann, D. Wildemann, F.M. Praetorius, G. Fischer, T. Kiefhaber, PNAS 108 (2011) 3952–3957. date_created: 2023-09-06T12:54:36Z date_published: 2011-01-12T00:00:00Z date_updated: 2023-11-07T11:50:29Z day: '12' doi: 10.1073/pnas.1012668108 extern: '1' external_id: pmid: - '21325613' intvolume: ' 108' issue: '10' keyword: - Multidisciplinary language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1073/pnas.1012668108 month: '01' oa: 1 oa_version: Published Version page: 3952-3957 pmid: 1 publication: PNAS publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Mapping backbone and side-chain interactions in the transition state of a coupled protein folding and binding reaction type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 108 year: '2011' ... --- _id: '9485' abstract: - lang: eng text: 'Cytosine methylation silences transposable elements in plants, vertebrates, and fungi but also regulates gene expression. Plant methylation is catalyzed by three families of enzymes, each with a preferred sequence context: CG, CHG (H = A, C, or T), and CHH, with CHH methylation targeted by the RNAi pathway. Arabidopsis thaliana endosperm, a placenta-like tissue that nourishes the embryo, is globally hypomethylated in the CG context while retaining high non-CG methylation. Global methylation dynamics in seeds of cereal crops that provide the bulk of human nutrition remain unknown. Here, we show that rice endosperm DNA is hypomethylated in all sequence contexts. Non-CG methylation is reduced evenly across the genome, whereas CG hypomethylation is localized. CHH methylation of small transposable elements is increased in embryos, suggesting that endosperm demethylation enhances transposon silencing. Genes preferentially expressed in endosperm, including those coding for major storage proteins and starch synthesizing enzymes, are frequently hypomethylated in endosperm, indicating that DNA methylation is a crucial regulator of rice endosperm biogenesis. Our data show that genome-wide reshaping of seed DNA methylation is conserved among angiosperms and has a profound effect on gene expression in cereal crops.' article_processing_charge: No article_type: original author: - first_name: Assaf full_name: Zemach, Assaf last_name: Zemach - first_name: M. Yvonne full_name: Kim, M. Yvonne last_name: Kim - first_name: Pedro full_name: Silva, Pedro last_name: Silva - first_name: Jessica A. full_name: Rodrigues, Jessica A. last_name: Rodrigues - first_name: Bradley full_name: Dotson, Bradley last_name: Dotson - first_name: Matthew D. full_name: Brooks, Matthew D. last_name: Brooks - first_name: Daniel full_name: Zilberman, Daniel id: 6973db13-dd5f-11ea-814e-b3e5455e9ed1 last_name: Zilberman orcid: 0000-0002-0123-8649 citation: ama: Zemach A, Kim MY, Silva P, et al. Local DNA hypomethylation activates genes in rice endosperm. Proceedings of the National Academy of Sciences. 2010;107(43):18729-18734. doi:10.1073/pnas.1009695107 apa: Zemach, A., Kim, M. Y., Silva, P., Rodrigues, J. A., Dotson, B., Brooks, M. D., & Zilberman, D. (2010). Local DNA hypomethylation activates genes in rice endosperm. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.1009695107 chicago: Zemach, Assaf, M. Yvonne Kim, Pedro Silva, Jessica A. Rodrigues, Bradley Dotson, Matthew D. Brooks, and Daniel Zilberman. “Local DNA Hypomethylation Activates Genes in Rice Endosperm.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2010. https://doi.org/10.1073/pnas.1009695107. ieee: A. Zemach et al., “Local DNA hypomethylation activates genes in rice endosperm,” Proceedings of the National Academy of Sciences, vol. 107, no. 43. National Academy of Sciences, pp. 18729–18734, 2010. ista: Zemach A, Kim MY, Silva P, Rodrigues JA, Dotson B, Brooks MD, Zilberman D. 2010. Local DNA hypomethylation activates genes in rice endosperm. Proceedings of the National Academy of Sciences. 107(43), 18729–18734. mla: Zemach, Assaf, et al. “Local DNA Hypomethylation Activates Genes in Rice Endosperm.” Proceedings of the National Academy of Sciences, vol. 107, no. 43, National Academy of Sciences, 2010, pp. 18729–34, doi:10.1073/pnas.1009695107. short: A. Zemach, M.Y. Kim, P. Silva, J.A. Rodrigues, B. Dotson, M.D. Brooks, D. Zilberman, Proceedings of the National Academy of Sciences 107 (2010) 18729–18734. date_created: 2021-06-07T09:31:01Z date_published: 2010-10-26T00:00:00Z date_updated: 2021-12-14T08:40:02Z day: '26' department: - _id: DaZi doi: 10.1073/pnas.1009695107 extern: '1' external_id: pmid: - '20937895' intvolume: ' 107' issue: '43' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1073/pnas.1009695107 month: '10' oa: 1 oa_version: Published Version page: 18729-18734 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Local DNA hypomethylation activates genes in rice endosperm type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 107 year: '2010' ... --- _id: '8483' abstract: - lang: eng text: Atom-resolved real-time studies of kinetic processes in proteins have been hampered in the past by the lack of experimental techniques that yield sufficient temporal and atomic resolution. Here we present band-selective optimized flip-angle short transient (SOFAST) real-time 2D NMR spectroscopy, a method that allows simultaneous observation of reaction kinetics for a large number of nuclear sites along the polypeptide chain of a protein with an unprecedented time resolution of a few seconds. SOFAST real-time 2D NMR spectroscopy combines fast NMR data acquisition techniques with rapid sample mixing inside the NMR magnet to initiate the kinetic event. We demonstrate the use of SOFAST real-time 2D NMR to monitor the conformational transition of α-lactalbumin from a molten globular to the native state for a large number of amide sites along the polypeptide chain. The kinetic behavior observed for the disappearance of the molten globule and the appearance of the native state is monoexponential and uniform along the polypeptide chain. This observation confirms previous findings that a single transition state ensemble controls folding of α-lactalbumin from the molten globule to the native state. In a second application, the spontaneous unfolding of native ubiquitin under nondenaturing conditions is characterized by amide hydrogen exchange rate constants measured at high pH by using SOFAST real-time 2D NMR. Our data reveal that ubiquitin unfolds in a gradual manner with distinct unfolding regimes. article_processing_charge: No article_type: original author: - first_name: Paul full_name: Schanda, Paul id: 7B541462-FAF6-11E9-A490-E8DFE5697425 last_name: Schanda orcid: 0000-0002-9350-7606 - first_name: V. full_name: Forge, V. last_name: Forge - first_name: B. full_name: Brutscher, B. last_name: Brutscher citation: ama: Schanda P, Forge V, Brutscher B. Protein folding and unfolding studied at atomic resolution by fast two-dimensional NMR spectroscopy. Proceedings of the National Academy of Sciences. 2007;104(27):11257-11262. doi:10.1073/pnas.0702069104 apa: Schanda, P., Forge, V., & Brutscher, B. (2007). Protein folding and unfolding studied at atomic resolution by fast two-dimensional NMR spectroscopy. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.0702069104 chicago: Schanda, Paul, V. Forge, and B. Brutscher. “Protein Folding and Unfolding Studied at Atomic Resolution by Fast Two-Dimensional NMR Spectroscopy.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2007. https://doi.org/10.1073/pnas.0702069104. ieee: P. Schanda, V. Forge, and B. Brutscher, “Protein folding and unfolding studied at atomic resolution by fast two-dimensional NMR spectroscopy,” Proceedings of the National Academy of Sciences, vol. 104, no. 27. National Academy of Sciences, pp. 11257–11262, 2007. ista: Schanda P, Forge V, Brutscher B. 2007. Protein folding and unfolding studied at atomic resolution by fast two-dimensional NMR spectroscopy. Proceedings of the National Academy of Sciences. 104(27), 11257–11262. mla: Schanda, Paul, et al. “Protein Folding and Unfolding Studied at Atomic Resolution by Fast Two-Dimensional NMR Spectroscopy.” Proceedings of the National Academy of Sciences, vol. 104, no. 27, National Academy of Sciences, 2007, pp. 11257–62, doi:10.1073/pnas.0702069104. short: P. Schanda, V. Forge, B. Brutscher, Proceedings of the National Academy of Sciences 104 (2007) 11257–11262. date_created: 2020-09-18T10:12:54Z date_published: 2007-07-03T00:00:00Z date_updated: 2021-01-12T08:19:35Z day: '03' doi: 10.1073/pnas.0702069104 extern: '1' intvolume: ' 104' issue: '27' keyword: - Multidisciplinary language: - iso: eng month: '07' oa_version: None page: 11257-11262 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' status: public title: Protein folding and unfolding studied at atomic resolution by fast two-dimensional NMR spectroscopy type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 104 year: '2007' ... --- _id: '9487' abstract: - lang: eng text: Cytosine DNA methylation is considered to be a stable epigenetic mark, but active demethylation has been observed in both plants and animals. In Arabidopsis thaliana, DNA glycosylases of the DEMETER (DME) family remove methylcytosines from DNA. Demethylation by DME is necessary for genomic imprinting, and demethylation by a related protein, REPRESSOR OF SILENCING1, prevents gene silencing in a transgenic background. However, the extent and function of demethylation by DEMETER-LIKE (DML) proteins in WT plants is not known. Using genome-tiling microarrays, we mapped DNA methylation in mutant and WT plants and identified 179 loci actively demethylated by DML enzymes. Mutations in DML genes lead to locus-specific DNA hypermethylation. Reintroducing WT DML genes restores most loci to the normal pattern of methylation, although at some loci, hypermethylated epialleles persist. Of loci demethylated by DML enzymes, >80% are near or overlap genes. Genic demethylation by DML enzymes primarily occurs at the 5′ and 3′ ends, a pattern opposite to the overall distribution of WT DNA methylation. Our results show that demethylation by DML DNA glycosylases edits the patterns of DNA methylation within the Arabidopsis genome to protect genes from potentially deleterious methylation. article_processing_charge: No article_type: original author: - first_name: Jon full_name: Penterman, Jon last_name: Penterman - first_name: Daniel full_name: Zilberman, Daniel id: 6973db13-dd5f-11ea-814e-b3e5455e9ed1 last_name: Zilberman orcid: 0000-0002-0123-8649 - first_name: Jin Hoe full_name: Huh, Jin Hoe last_name: Huh - first_name: Tracy full_name: Ballinger, Tracy last_name: Ballinger - first_name: Steven full_name: Henikoff, Steven last_name: Henikoff - first_name: Robert L. full_name: Fischer, Robert L. last_name: Fischer citation: ama: Penterman J, Zilberman D, Huh JH, Ballinger T, Henikoff S, Fischer RL. DNA demethylation in the Arabidopsis genome. Proceedings of the National Academy of Sciences. 2007;104(16):6752-6757. doi:10.1073/pnas.0701861104 apa: Penterman, J., Zilberman, D., Huh, J. H., Ballinger, T., Henikoff, S., & Fischer, R. L. (2007). DNA demethylation in the Arabidopsis genome. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.0701861104 chicago: Penterman, Jon, Daniel Zilberman, Jin Hoe Huh, Tracy Ballinger, Steven Henikoff, and Robert L. Fischer. “DNA Demethylation in the Arabidopsis Genome.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2007. https://doi.org/10.1073/pnas.0701861104. ieee: J. Penterman, D. Zilberman, J. H. Huh, T. Ballinger, S. Henikoff, and R. L. Fischer, “DNA demethylation in the Arabidopsis genome,” Proceedings of the National Academy of Sciences, vol. 104, no. 16. National Academy of Sciences, pp. 6752–6757, 2007. ista: Penterman J, Zilberman D, Huh JH, Ballinger T, Henikoff S, Fischer RL. 2007. DNA demethylation in the Arabidopsis genome. Proceedings of the National Academy of Sciences. 104(16), 6752–6757. mla: Penterman, Jon, et al. “DNA Demethylation in the Arabidopsis Genome.” Proceedings of the National Academy of Sciences, vol. 104, no. 16, National Academy of Sciences, 2007, pp. 6752–57, doi:10.1073/pnas.0701861104. short: J. Penterman, D. Zilberman, J.H. Huh, T. Ballinger, S. Henikoff, R.L. Fischer, Proceedings of the National Academy of Sciences 104 (2007) 6752–6757. date_created: 2021-06-07T09:38:21Z date_published: 2007-04-17T00:00:00Z date_updated: 2021-12-14T08:55:12Z day: '17' department: - _id: DaZi doi: 10.1073/pnas.0701861104 extern: '1' external_id: pmid: - '17409185' intvolume: ' 104' issue: '16' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1073/pnas.0701861104 month: '04' oa: 1 oa_version: Published Version page: 6752-6757 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: DNA demethylation in the Arabidopsis genome type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 104 year: '2007' ... --- _id: '13425' abstract: - lang: eng text: Nanoparticles (NPs) decorated with ligands combining photoswitchable dipoles and covalent cross-linkers can be assembled by light into organized, three-dimensional suprastructures of various types and sizes. NPs covered with only few photoactive ligands form metastable crystals that can be assembled and disassembled “on demand” by using light of different wavelengths. For higher surface concentrations, self-assembly is irreversible, and the NPs organize into permanently cross-linked structures including robust supracrystals and plastic spherical aggregates. article_processing_charge: No article_type: original author: - first_name: Rafal full_name: Klajn, Rafal id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b last_name: Klajn - first_name: Kyle J. M. full_name: Bishop, Kyle J. M. last_name: Bishop - first_name: Bartosz A. full_name: Grzybowski, Bartosz A. last_name: Grzybowski citation: ama: Klajn R, Bishop KJM, Grzybowski BA. Light-controlled self-assembly of reversible and irreversible nanoparticle suprastructures. Proceedings of the National Academy of Sciences. 2007;104(25):10305-10309. doi:10.1073/pnas.0611371104 apa: Klajn, R., Bishop, K. J. M., & Grzybowski, B. A. (2007). Light-controlled self-assembly of reversible and irreversible nanoparticle suprastructures. Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0611371104 chicago: Klajn, Rafal, Kyle J. M. Bishop, and Bartosz A. Grzybowski. “Light-Controlled Self-Assembly of Reversible and Irreversible Nanoparticle Suprastructures.” Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences, 2007. https://doi.org/10.1073/pnas.0611371104. ieee: R. Klajn, K. J. M. Bishop, and B. A. Grzybowski, “Light-controlled self-assembly of reversible and irreversible nanoparticle suprastructures,” Proceedings of the National Academy of Sciences, vol. 104, no. 25. Proceedings of the National Academy of Sciences, pp. 10305–10309, 2007. ista: Klajn R, Bishop KJM, Grzybowski BA. 2007. Light-controlled self-assembly of reversible and irreversible nanoparticle suprastructures. Proceedings of the National Academy of Sciences. 104(25), 10305–10309. mla: Klajn, Rafal, et al. “Light-Controlled Self-Assembly of Reversible and Irreversible Nanoparticle Suprastructures.” Proceedings of the National Academy of Sciences, vol. 104, no. 25, Proceedings of the National Academy of Sciences, 2007, pp. 10305–09, doi:10.1073/pnas.0611371104. short: R. Klajn, K.J.M. Bishop, B.A. Grzybowski, Proceedings of the National Academy of Sciences 104 (2007) 10305–10309. date_created: 2023-08-01T10:31:19Z date_published: 2007-06-19T00:00:00Z date_updated: 2023-08-08T11:24:51Z day: '19' doi: 10.1073/pnas.0611371104 extern: '1' external_id: pmid: - '17563381' intvolume: ' 104' issue: '25' keyword: - Multidisciplinary language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1073/pnas.0611371104 month: '06' oa: 1 oa_version: Published Version page: 10305-10309 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Light-controlled self-assembly of reversible and irreversible nanoparticle suprastructures type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 104 year: '2007' ... --- _id: '11877' abstract: - lang: eng text: The World Wide Web provides a unprecedented opportunity to automatically analyze a large sample of interests and activity in the world. We discuss methods for extracting knowledge from the web by randomly sampling and analyzing hosts and pages, and by analyzing the link structure of the web and how links accumulate over time. A variety of interesting and valuable information can be extracted, such as the distribution of web pages over domains, the distribution of interest in different areas, communities related to different topics, the nature of competition in different categories of sites, and the degree of communication between different communities or countries. article_processing_charge: No article_type: original author: - first_name: Monika H full_name: Henzinger, Monika H id: 540c9bbd-f2de-11ec-812d-d04a5be85630 last_name: Henzinger orcid: 0000-0002-5008-6530 - first_name: Steve full_name: Lawrence, Steve last_name: Lawrence citation: ama: Henzinger MH, Lawrence S. Extracting knowledge from the World Wide Web. Proceedings of the National Academy of Sciences. 2004;101(suppl_1):5186-5191. doi:10.1073/pnas.0307528100 apa: Henzinger, M. H., & Lawrence, S. (2004). Extracting knowledge from the World Wide Web. Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0307528100 chicago: Henzinger, Monika H, and Steve Lawrence. “Extracting Knowledge from the World Wide Web.” Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences, 2004. https://doi.org/10.1073/pnas.0307528100. ieee: M. H. Henzinger and S. Lawrence, “Extracting knowledge from the World Wide Web,” Proceedings of the National Academy of Sciences, vol. 101, no. suppl_1. Proceedings of the National Academy of Sciences, pp. 5186–5191, 2004. ista: Henzinger MH, Lawrence S. 2004. Extracting knowledge from the World Wide Web. Proceedings of the National Academy of Sciences. 101(suppl_1), 5186–5191. mla: Henzinger, Monika H., and Steve Lawrence. “Extracting Knowledge from the World Wide Web.” Proceedings of the National Academy of Sciences, vol. 101, no. suppl_1, Proceedings of the National Academy of Sciences, 2004, pp. 5186–91, doi:10.1073/pnas.0307528100. short: M.H. Henzinger, S. Lawrence, Proceedings of the National Academy of Sciences 101 (2004) 5186–5191. date_created: 2022-08-16T13:06:10Z date_published: 2004-04-06T00:00:00Z date_updated: 2023-02-17T12:21:43Z day: '06' doi: 10.1073/pnas.0307528100 extern: '1' external_id: pmid: - '14745041' intvolume: ' 101' issue: suppl_1 language: - iso: eng main_file_link: - open_access: '1' url: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC387294/ month: '04' oa: 1 oa_version: Published Version page: 5186-5191 pmid: 1 publication: Proceedings of the National Academy of Sciences publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: Proceedings of the National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Extracting knowledge from the World Wide Web type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 101 year: '2004' ... --- _id: '3466' abstract: - lang: eng text: Amphibian myelinated nerve fibers were treated with collagenase and protease. Axons with retraction of the myelin sheath were patch-clamped in the nodal and paranodal region. One type of Na channel was found. It has a single-channel conductance of 11 pS (15 degrees C) and is blocked by tetrodotoxin. Averaged events show the typical activation and inactivation kinetics of macroscopic Na current. Three potential-dependent K channels were identified (I, F, and S channel). The I channel, being the most frequent type, has a single-channel conductance of 23 pS (inward current, 105 mM K on both sides of the membrane), activates between -60 and -30 mV, deactivates with intermediate kinetics, and is sensitive to dendrotoxin. The F channel has a conductance of 30 pS, activates between -40 and 60 mV, and deactivates with fast kinetics. The former inactivates within tens of seconds; the latter inactivates within seconds. The third type, the S channel, has a conductance of 7 pS and deactivates slowly. All three channels can be blocked by external tetraethylammonium chloride. We suggest that these distinct K channel types form the basis for the different components of macroscopic K current described previously. acknowledgement: We thank Drs. C. Baumann, D. Siemen, and W. Stuhmer for reading the manuscript and Dr. F. Dreyer for the generous gift of DTX. The study was supported by the Deutsche Forschungsgemeinschaft. article_processing_charge: No article_type: original author: - first_name: Peter M full_name: Jonas, Peter M id: 353C1B58-F248-11E8-B48F-1D18A9856A87 last_name: Jonas orcid: 0000-0001-5001-4804 - first_name: Michael full_name: Bräu, Michael last_name: Bräu - first_name: Markus full_name: Hermsteiner, Markus last_name: Hermsteiner - first_name: Werner full_name: Vogel, Werner last_name: Vogel citation: ama: Jonas PM, Bräu M, Hermsteiner M, Vogel W. Single-channel recording in myelinated nerve fibers reveals one type of Na channel but different K channels. PNAS. 1989;86(18):7238-7242. doi:10.1073/pnas.86.18.7238 apa: Jonas, P. M., Bräu, M., Hermsteiner, M., & Vogel, W. (1989). Single-channel recording in myelinated nerve fibers reveals one type of Na channel but different K channels. PNAS. National Academy of Sciences. https://doi.org/10.1073/pnas.86.18.7238 chicago: Jonas, Peter M, Michael Bräu, Markus Hermsteiner, and Werner Vogel. “Single-Channel Recording in Myelinated Nerve Fibers Reveals One Type of Na Channel but Different K Channels.” PNAS. National Academy of Sciences, 1989. https://doi.org/10.1073/pnas.86.18.7238. ieee: P. M. Jonas, M. Bräu, M. Hermsteiner, and W. Vogel, “Single-channel recording in myelinated nerve fibers reveals one type of Na channel but different K channels,” PNAS, vol. 86, no. 18. National Academy of Sciences, pp. 7238–7242, 1989. ista: Jonas PM, Bräu M, Hermsteiner M, Vogel W. 1989. Single-channel recording in myelinated nerve fibers reveals one type of Na channel but different K channels. PNAS. 86(18), 7238–7242. mla: Jonas, Peter M., et al. “Single-Channel Recording in Myelinated Nerve Fibers Reveals One Type of Na Channel but Different K Channels.” PNAS, vol. 86, no. 18, National Academy of Sciences, 1989, pp. 7238–42, doi:10.1073/pnas.86.18.7238. short: P.M. Jonas, M. Bräu, M. Hermsteiner, W. Vogel, PNAS 86 (1989) 7238–7242. date_created: 2018-12-11T12:03:28Z date_published: 1989-09-01T00:00:00Z date_updated: 2022-02-14T16:12:33Z day: '01' doi: 10.1073/pnas.86.18.7238 extern: '1' external_id: pmid: - '2550937 ' intvolume: ' 86' issue: '18' language: - iso: eng main_file_link: - open_access: '1' url: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC298032/?tool=pubmed month: '09' oa: 1 oa_version: Published Version page: 7238 - 7242 pmid: 1 publication: PNAS publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences publist_id: '2921' quality_controlled: '1' status: public title: Single-channel recording in myelinated nerve fibers reveals one type of Na channel but different K channels type: journal_article user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17 volume: 86 year: '1989' ...