[{"oa":1,"article_type":"original","month":"08","page":"72-87","publication_status":"published","day":"02","author":[{"first_name":"Sayan","last_name":"Bhattacharya","full_name":"Bhattacharya, Sayan"},{"id":"540c9bbd-f2de-11ec-812d-d04a5be85630","full_name":"Henzinger, Monika H","orcid":"0000-0002-5008-6530","first_name":"Monika H","last_name":"Henzinger"},{"full_name":"Neumann, Stefan","first_name":"Stefan","last_name":"Neumann"}],"citation":{"apa":"Bhattacharya, S., Henzinger, M., & Neumann, S. (2019). New amortized cell-probe lower bounds for dynamic problems. Theoretical Computer Science. Elsevier. https://doi.org/10.1016/j.tcs.2019.01.043","ista":"Bhattacharya S, Henzinger M, Neumann S. 2019. New amortized cell-probe lower bounds for dynamic problems. Theoretical Computer Science. 779, 72–87.","ieee":"S. Bhattacharya, M. Henzinger, and S. Neumann, “New amortized cell-probe lower bounds for dynamic problems,” Theoretical Computer Science, vol. 779. Elsevier, pp. 72–87, 2019.","ama":"Bhattacharya S, Henzinger M, Neumann S. New amortized cell-probe lower bounds for dynamic problems. Theoretical Computer Science. 2019;779:72-87. doi:10.1016/j.tcs.2019.01.043","short":"S. Bhattacharya, M. Henzinger, S. Neumann, Theoretical Computer Science 779 (2019) 72–87.","chicago":"Bhattacharya, Sayan, Monika Henzinger, and Stefan Neumann. “New Amortized Cell-Probe Lower Bounds for Dynamic Problems.” Theoretical Computer Science. Elsevier, 2019. https://doi.org/10.1016/j.tcs.2019.01.043.","mla":"Bhattacharya, Sayan, et al. “New Amortized Cell-Probe Lower Bounds for Dynamic Problems.” Theoretical Computer Science, vol. 779, Elsevier, 2019, pp. 72–87, doi:10.1016/j.tcs.2019.01.043."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_published":"2019-08-02T00:00:00Z","_id":"11898","publisher":"Elsevier","external_id":{"arxiv":["1902.02304"]},"abstract":[{"lang":"eng","text":"We build upon the recent papers by Weinstein and Yu (FOCS'16), Larsen (FOCS'12), and Clifford et al. (FOCS'15) to present a general framework that gives amortized lower bounds on the update and query times of dynamic data structures. Using our framework, we present two concrete results.\r\n(1) For the dynamic polynomial evaluation problem, where the polynomial is defined over a finite field of size n1+Ω(1) and has degree n, any dynamic data structure must either have an amortized update time of Ω((lgn/lglgn)2) or an amortized query time of Ω((lgn/lglgn)2).\r\n(2) For the dynamic online matrix vector multiplication problem, where we get an n×n matrix whose entires are drawn from a finite field of size nΘ(1), any dynamic data structure must either have an amortized update time of Ω((lgn/lglgn)2) or an amortized query time of Ω(n⋅(lgn/lglgn)2).\r\nFor these two problems, the previous works by Larsen (FOCS'12) and Clifford et al. (FOCS'15) gave the same lower bounds, but only for worst case update and query times. Our bounds match the highest unconditional lower bounds known till date for any dynamic problem in the cell-probe model."}],"intvolume":" 779","date_created":"2022-08-17T09:02:15Z","language":[{"iso":"eng"}],"quality_controlled":"1","doi":"10.1016/j.tcs.2019.01.043","publication_identifier":{"issn":["0304-3975"]},"main_file_link":[{"url":"https://arxiv.org/abs/1902.02304","open_access":"1"}],"publication":"Theoretical Computer Science","type":"journal_article","title":"New amortized cell-probe lower bounds for dynamic problems","article_processing_charge":"No","oa_version":"Preprint","scopus_import":"1","date_updated":"2024-11-06T12:23:49Z","status":"public","volume":779,"year":"2019","arxiv":1,"extern":"1"},{"page":"9575-9580","publication_status":"published","day":"08","author":[{"id":"93e5e5b2-0da6-11ed-8a41-af589a024726","full_name":"Pieber, Bartholomäus","orcid":"0000-0001-8689-388X","first_name":"Bartholomäus","last_name":"Pieber"},{"first_name":"Jamal A.","last_name":"Malik","full_name":"Malik, Jamal A."},{"full_name":"Cavedon, Cristian","last_name":"Cavedon","first_name":"Cristian"},{"full_name":"Gisbertz, Sebastian","last_name":"Gisbertz","first_name":"Sebastian"},{"full_name":"Savateev, Aleksandr","last_name":"Savateev","first_name":"Aleksandr"},{"full_name":"Cruz, Daniel","first_name":"Daniel","last_name":"Cruz"},{"full_name":"Heil, Tobias","last_name":"Heil","first_name":"Tobias"},{"full_name":"Zhang, Guigang","first_name":"Guigang","last_name":"Zhang"},{"first_name":"Peter H.","last_name":"Seeberger","full_name":"Seeberger, Peter H."}],"citation":{"chicago":"Pieber, Bartholomäus, Jamal A. Malik, Cristian Cavedon, Sebastian Gisbertz, Aleksandr Savateev, Daniel Cruz, Tobias Heil, Guigang Zhang, and Peter H. Seeberger. “Semi‐heterogeneous Dual Nickel/Photocatalysis Using Carbon Nitrides: Esterification of Carboxylic Acids with Aryl Halides.” Angewandte Chemie International Edition. Wiley, 2019. https://doi.org/10.1002/anie.201902785.","mla":"Pieber, Bartholomäus, et al. “Semi‐heterogeneous Dual Nickel/Photocatalysis Using Carbon Nitrides: Esterification of Carboxylic Acids with Aryl Halides.” Angewandte Chemie International Edition, vol. 58, no. 28, Wiley, 2019, pp. 9575–80, doi:10.1002/anie.201902785.","short":"B. Pieber, J.A. Malik, C. Cavedon, S. Gisbertz, A. Savateev, D. Cruz, T. Heil, G. Zhang, P.H. Seeberger, Angewandte Chemie International Edition 58 (2019) 9575–9580.","ista":"Pieber B, Malik JA, Cavedon C, Gisbertz S, Savateev A, Cruz D, Heil T, Zhang G, Seeberger PH. 2019. Semi‐heterogeneous dual nickel/photocatalysis using carbon nitrides: Esterification of carboxylic acids with aryl halides. Angewandte Chemie International Edition. 58(28), 9575–9580.","ieee":"B. Pieber et al., “Semi‐heterogeneous dual nickel/photocatalysis using carbon nitrides: Esterification of carboxylic acids with aryl halides,” Angewandte Chemie International Edition, vol. 58, no. 28. Wiley, pp. 9575–9580, 2019.","ama":"Pieber B, Malik JA, Cavedon C, et al. Semi‐heterogeneous dual nickel/photocatalysis using carbon nitrides: Esterification of carboxylic acids with aryl halides. Angewandte Chemie International Edition. 2019;58(28):9575-9580. doi:10.1002/anie.201902785","apa":"Pieber, B., Malik, J. A., Cavedon, C., Gisbertz, S., Savateev, A., Cruz, D., … Seeberger, P. H. (2019). Semi‐heterogeneous dual nickel/photocatalysis using carbon nitrides: Esterification of carboxylic acids with aryl halides. Angewandte Chemie International Edition. Wiley. https://doi.org/10.1002/anie.201902785"},"pmid":1,"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_type":"letter_note","month":"07","date_created":"2022-08-24T10:50:19Z","quality_controlled":"1","language":[{"iso":"eng"}],"date_published":"2019-07-08T00:00:00Z","_id":"11957","publisher":"Wiley","external_id":{"pmid":["31050132"]},"abstract":[{"text":"Cross-coupling reactions mediated by dual nickel/photocatalysis are synthetically attractive but rely mainly on expensive, non-recyclable noble-metal complexes as photocatalysts. Heterogeneous semiconductors, which are commonly used for artificial photosynthesis and wastewater treatment, are a sustainable alternative. Graphitic carbon nitrides, a class of metal-free polymers that can be easily prepared from bulk chemicals, are heterogeneous semiconductors with high potential for photocatalytic organic transformations. Here, we demonstrate that graphitic carbon nitrides in combination with nickel catalysis can induce selective C−O cross-couplings of carboxylic acids with aryl halides, yielding the respective aryl esters in excellent yield and selectivity. The heterogeneous organic photocatalyst exhibits a broad substrate scope, is able to harvest green light, and can be recycled multiple times. In situ FTIR was used to track the reaction progress to study this transformation at different irradiation wavelengths and reaction scales.","lang":"eng"}],"intvolume":" 58","publication":"Angewandte Chemie International Edition","type":"journal_article","title":"Semi‐heterogeneous dual nickel/photocatalysis using carbon nitrides: Esterification of carboxylic acids with aryl halides","article_processing_charge":"No","doi":"10.1002/anie.201902785","publication_identifier":{"issn":["1433-7851"],"eissn":["1521-3773"]},"date_updated":"2024-10-14T11:43:18Z","status":"public","volume":58,"extern":"1","year":"2019","oa_version":"None","scopus_import":"1","issue":"28"},{"date_created":"2022-08-25T11:18:00Z","quality_controlled":"1","language":[{"iso":"eng"}],"date_published":"2019-07-05T00:00:00Z","publisher":"American Chemical Society","_id":"11982","external_id":{"pmid":["31247752"]},"intvolume":" 21","abstract":[{"lang":"eng","text":"A carbon nitride material can be combined with homogeneous nickel catalysts for light-mediated cross-couplings of aryl bromides with alcohols under mild conditions. The metal-free heterogeneous semiconductor is fully recyclable and couples a broad range of electron-poor aryl bromides with primary and secondary alcohols as well as water. The application for intramolecular reactions and the synthesis of active pharmaceutical ingredients was demonstrated. The catalytic protocol is applicable for the coupling of aryl iodides with thiols as well."}],"page":"5331-5334","day":"05","publication_status":"published","pmid":1,"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","author":[{"full_name":"Cavedon, Cristian","first_name":"Cristian","last_name":"Cavedon"},{"full_name":"Madani, Amiera","last_name":"Madani","first_name":"Amiera"},{"full_name":"Seeberger, Peter H.","first_name":"Peter H.","last_name":"Seeberger"},{"id":"93e5e5b2-0da6-11ed-8a41-af589a024726","full_name":"Pieber, Bartholomäus","orcid":"0000-0001-8689-388X","last_name":"Pieber","first_name":"Bartholomäus"}],"citation":{"apa":"Cavedon, C., Madani, A., Seeberger, P. H., & Pieber, B. (2019). Semiheterogeneous dual nickel/photocatalytic (thio)etherification using carbon nitrides. Organic Letters. American Chemical Society. https://doi.org/10.1021/acs.orglett.9b01957","short":"C. Cavedon, A. Madani, P.H. Seeberger, B. Pieber, Organic Letters 21 (2019) 5331–5334.","ieee":"C. Cavedon, A. Madani, P. H. Seeberger, and B. Pieber, “Semiheterogeneous dual nickel/photocatalytic (thio)etherification using carbon nitrides,” Organic Letters, vol. 21, no. 13. American Chemical Society, pp. 5331–5334, 2019.","ista":"Cavedon C, Madani A, Seeberger PH, Pieber B. 2019. Semiheterogeneous dual nickel/photocatalytic (thio)etherification using carbon nitrides. Organic Letters. 21(13), 5331–5334.","ama":"Cavedon C, Madani A, Seeberger PH, Pieber B. Semiheterogeneous dual nickel/photocatalytic (thio)etherification using carbon nitrides. Organic Letters. 2019;21(13):5331-5334. doi:10.1021/acs.orglett.9b01957","chicago":"Cavedon, Cristian, Amiera Madani, Peter H. Seeberger, and Bartholomäus Pieber. “Semiheterogeneous Dual Nickel/Photocatalytic (Thio)Etherification Using Carbon Nitrides.” Organic Letters. American Chemical Society, 2019. https://doi.org/10.1021/acs.orglett.9b01957.","mla":"Cavedon, Cristian, et al. “Semiheterogeneous Dual Nickel/Photocatalytic (Thio)Etherification Using Carbon Nitrides.” Organic Letters, vol. 21, no. 13, American Chemical Society, 2019, pp. 5331–34, doi:10.1021/acs.orglett.9b01957."},"oa":1,"month":"07","article_type":"letter_note","date_updated":"2024-10-14T12:07:10Z","status":"public","volume":21,"year":"2019","extern":"1","oa_version":"Published Version","scopus_import":"1","issue":"13","publication":"Organic Letters","type":"journal_article","title":"Semiheterogeneous dual nickel/photocatalytic (thio)etherification using carbon nitrides","article_processing_charge":"No","doi":"10.1021/acs.orglett.9b01957","publication_identifier":{"issn":["1523-7060"],"eissn":["1523-7052"]},"main_file_link":[{"url":"https://doi.org/10.1021/acs.orglett.9b01957","open_access":"1"}]},{"status":"public","date_updated":"2023-02-21T10:10:23Z","year":"2019","extern":"1","volume":23,"oa_version":"Published Version","scopus_import":"1","issue":"12","type":"journal_article","publication":"Organic Process Research and Development","article_processing_charge":"No","title":"Safe and scalable continuous flow azidophenylselenylation of galactal to prepare galactosamine building blocks","doi":"10.1021/acs.oprd.9b00456","main_file_link":[{"open_access":"1","url":"https://doi.org/10.1021/acs.oprd.9b00456"}],"publication_identifier":{"eissn":["1520-586X"],"issn":["1083-6160"]},"date_created":"2022-08-25T11:30:33Z","quality_controlled":"1","language":[{"iso":"eng"}],"_id":"11984","publisher":"American Chemical Society","date_published":"2019-12-20T00:00:00Z","abstract":[{"lang":"eng","text":"Differentially protected galactosamine building blocks are key components for the synthesis of human and bacterial oligosaccharides. The azidophenylselenylation of 3,4,6-tri-O-acetyl-d-galactal provides straightforward access to the corresponding 2-nitrogenated glycoside. Poor reproducibility and the use of azides that lead to the formation of potentially explosive and toxic species limit the scalability of this reaction and render it a bottleneck for carbohydrate synthesis. Here, we present a method for the safe, efficient, and reliable azidophenylselenylation of 3,4,6-tri-O-acetyl-d-galactal at room temperature, using continuous flow chemistry. Careful analysis of the transformation resulted in reaction conditions that produce minimal side products while the reaction time was reduced drastically when compared to batch reactions. The flow setup is readily scalable to process 5 mmol of galactal in 3 h, producing 1.2 mmol/h of product."}],"intvolume":" 23","page":"2764-2770","citation":{"apa":"Guberman, M., Pieber, B., & Seeberger, P. H. (2019). Safe and scalable continuous flow azidophenylselenylation of galactal to prepare galactosamine building blocks. Organic Process Research and Development. American Chemical Society. https://doi.org/10.1021/acs.oprd.9b00456","chicago":"Guberman, Mónica, Bartholomäus Pieber, and Peter H. Seeberger. “Safe and Scalable Continuous Flow Azidophenylselenylation of Galactal to Prepare Galactosamine Building Blocks.” Organic Process Research and Development. American Chemical Society, 2019. https://doi.org/10.1021/acs.oprd.9b00456.","mla":"Guberman, Mónica, et al. “Safe and Scalable Continuous Flow Azidophenylselenylation of Galactal to Prepare Galactosamine Building Blocks.” Organic Process Research and Development, vol. 23, no. 12, American Chemical Society, 2019, pp. 2764–70, doi:10.1021/acs.oprd.9b00456.","short":"M. Guberman, B. Pieber, P.H. Seeberger, Organic Process Research and Development 23 (2019) 2764–2770.","ama":"Guberman M, Pieber B, Seeberger PH. Safe and scalable continuous flow azidophenylselenylation of galactal to prepare galactosamine building blocks. Organic Process Research and Development. 2019;23(12):2764-2770. doi:10.1021/acs.oprd.9b00456","ieee":"M. Guberman, B. Pieber, and P. H. Seeberger, “Safe and scalable continuous flow azidophenylselenylation of galactal to prepare galactosamine building blocks,” Organic Process Research and Development, vol. 23, no. 12. American Chemical Society, pp. 2764–2770, 2019.","ista":"Guberman M, Pieber B, Seeberger PH. 2019. Safe and scalable continuous flow azidophenylselenylation of galactal to prepare galactosamine building blocks. Organic Process Research and Development. 23(12), 2764–2770."},"author":[{"first_name":"Mónica","last_name":"Guberman","full_name":"Guberman, Mónica"},{"id":"93e5e5b2-0da6-11ed-8a41-af589a024726","full_name":"Pieber, Bartholomäus","orcid":"0000-0001-8689-388X","first_name":"Bartholomäus","last_name":"Pieber"},{"first_name":"Peter H.","last_name":"Seeberger","full_name":"Seeberger, Peter H."}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publication_status":"published","day":"20","oa":1,"article_type":"letter_note","month":"12"},{"month":"08","article_type":"original","day":"19","publication_status":"published","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","pmid":1,"author":[{"full_name":"Lawrence, Emma J.","first_name":"Emma J.","last_name":"Lawrence"},{"last_name":"Gao","first_name":"Hongbo","full_name":"Gao, Hongbo"},{"full_name":"Tock, Andrew J.","first_name":"Andrew J.","last_name":"Tock"},{"full_name":"Lambing, Christophe","first_name":"Christophe","last_name":"Lambing"},{"full_name":"Blackwell, Alexander R.","last_name":"Blackwell","first_name":"Alexander R."},{"id":"e0164712-22ee-11ed-b12a-d80fcdf35958","full_name":"Feng, Xiaoqi","orcid":"0000-0002-4008-1234","last_name":"Feng","first_name":"Xiaoqi"},{"first_name":"Ian R.","last_name":"Henderson","full_name":"Henderson, Ian R."}],"citation":{"mla":"Lawrence, Emma J., et al. “Natural Variation in TBP-ASSOCIATED FACTOR 4b Controls Meiotic Crossover and Germline Transcription in Arabidopsis.” Current Biology, vol. 29, no. 16, Elsevier, 2019, p. 2676–2686.e3, doi:10.1016/j.cub.2019.06.084.","chicago":"Lawrence, Emma J., Hongbo Gao, Andrew J. Tock, Christophe Lambing, Alexander R. Blackwell, Xiaoqi Feng, and Ian R. Henderson. “Natural Variation in TBP-ASSOCIATED FACTOR 4b Controls Meiotic Crossover and Germline Transcription in Arabidopsis.” Current Biology. Elsevier, 2019. https://doi.org/10.1016/j.cub.2019.06.084.","short":"E.J. Lawrence, H. Gao, A.J. Tock, C. Lambing, A.R. Blackwell, X. Feng, I.R. Henderson, Current Biology 29 (2019) 2676–2686.e3.","ama":"Lawrence EJ, Gao H, Tock AJ, et al. Natural variation in TBP-ASSOCIATED FACTOR 4b controls meiotic crossover and germline transcription in Arabidopsis. Current Biology. 2019;29(16):2676-2686.e3. doi:10.1016/j.cub.2019.06.084","ista":"Lawrence EJ, Gao H, Tock AJ, Lambing C, Blackwell AR, Feng X, Henderson IR. 2019. Natural variation in TBP-ASSOCIATED FACTOR 4b controls meiotic crossover and germline transcription in Arabidopsis. Current Biology. 29(16), 2676–2686.e3.","ieee":"E. J. Lawrence et al., “Natural variation in TBP-ASSOCIATED FACTOR 4b controls meiotic crossover and germline transcription in Arabidopsis,” Current Biology, vol. 29, no. 16. Elsevier, p. 2676–2686.e3, 2019.","apa":"Lawrence, E. J., Gao, H., Tock, A. J., Lambing, C., Blackwell, A. R., Feng, X., & Henderson, I. R. (2019). Natural variation in TBP-ASSOCIATED FACTOR 4b controls meiotic crossover and germline transcription in Arabidopsis. Current Biology. Elsevier. https://doi.org/10.1016/j.cub.2019.06.084"},"page":"2676-2686.e3","external_id":{"pmid":["31378616"]},"intvolume":" 29","abstract":[{"text":"Meiotic crossover frequency varies within genomes, which influences genetic diversity and adaptation. In turn, genetic variation within populations can act to modify crossover frequency in cis and trans. To identify genetic variation that controls meiotic crossover frequency, we screened Arabidopsis accessions using fluorescent recombination reporters. We mapped a genetic modifier of crossover frequency in Col × Bur populations of Arabidopsis to a premature stop codon within TBP-ASSOCIATED FACTOR 4b (TAF4b), which encodes a subunit of the RNA polymerase II general transcription factor TFIID. The Arabidopsis taf4b mutation is a rare variant found in the British Isles, originating in South-West Ireland. Using genetics, genomics, and immunocytology, we demonstrate a genome-wide decrease in taf4b crossovers, with strongest reduction in the sub-telomeric regions. Using RNA sequencing (RNA-seq) from purified meiocytes, we show that TAF4b expression is meiocyte enriched, whereas its paralog TAF4 is broadly expressed. Consistent with the role of TFIID in promoting gene expression, RNA-seq of wild-type and taf4b meiocytes identified widespread transcriptional changes, including in genes that regulate the meiotic cell cycle and recombination. Therefore, TAF4b duplication is associated with acquisition of meiocyte-specific expression and promotion of germline transcription, which act directly or indirectly to elevate crossovers. This identifies a novel mode of meiotic recombination control via a general transcription factor.","lang":"eng"}],"date_published":"2019-08-19T00:00:00Z","publisher":"Elsevier","_id":"12190","department":[{"_id":"XiFe"}],"language":[{"iso":"eng"}],"quality_controlled":"1","acknowledgement":"We thank Gregory Copenhaver (University of North Carolina), Avraham Levy (The Weizmann Institute), and Scott Poethig (University of Pennsylvania) for FTLs; Piotr Ziolkowski for Col-420/Bur seed; Sureshkumar Balasubramanian\r\n(Monash University) for providing British and Irish Arabidopsis accessions; Mathilde Grelon (INRA, Versailles) for providing the MLH1 antibody; and the Gurdon Institute for access to microscopes. This work was supported by a BBSRC DTP studentship (E.J.L.), European Research Area Network for Coordinating Action in Plant Sciences/BBSRC ‘‘DeCOP’’ (BB/M004937/1; C.L.), a BBSRC David Phillips Fellowship (BB/L025043/1; H.G. and X.F.), the European Research Council (CoG ‘‘SynthHotspot,’’ A.J.T., C.L., and I.R.H.; StG ‘‘SexMeth,’’ X.F.), and a Sainsbury Charitable Foundation Studentship (A.R.B.).","date_created":"2023-01-16T09:16:33Z","publication_identifier":{"issn":["0960-9822"]},"doi":"10.1016/j.cub.2019.06.084","title":"Natural variation in TBP-ASSOCIATED FACTOR 4b controls meiotic crossover and germline transcription in Arabidopsis","article_processing_charge":"No","publication":"Current Biology","type":"journal_article","issue":"16","scopus_import":"1","oa_version":"None","keyword":["General Agricultural and Biological Sciences","General Biochemistry","Genetics and Molecular Biology"],"volume":29,"extern":"1","year":"2019","date_updated":"2025-01-14T14:31:02Z","status":"public"},{"publication":"eLife","type":"journal_article","file":[{"content_type":"application/pdf","success":1,"access_level":"open_access","checksum":"ea6b89c20d59e5eb3646916fe5d568ad","file_id":"12525","creator":"alisjak","file_size":2493837,"date_created":"2023-02-07T09:42:46Z","relation":"main_file","file_name":"2019_elife_He.pdf","date_updated":"2023-02-07T09:42:46Z"}],"article_processing_charge":"No","title":"Natural depletion of histone H1 in sex cells causes DNA demethylation, heterochromatin decondensation and transposon activation","doi":"10.7554/elife.42530","publication_identifier":{"issn":["2050-084X"]},"status":"public","date_updated":"2025-01-14T14:31:41Z","year":"2019","extern":"1","article_number":"42530","volume":8,"keyword":["General Immunology and Microbiology","General Biochemistry","Genetics and Molecular Biology","General Medicine","General Neuroscience"],"oa_version":"Published Version","scopus_import":"1","file_date_updated":"2023-02-07T09:42:46Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"apa":"He, S., Vickers, M., Zhang, J., & Feng, X. (2019). Natural depletion of histone H1 in sex cells causes DNA demethylation, heterochromatin decondensation and transposon activation. ELife. eLife Sciences Publications. https://doi.org/10.7554/elife.42530","ista":"He S, Vickers M, Zhang J, Feng X. 2019. Natural depletion of histone H1 in sex cells causes DNA demethylation, heterochromatin decondensation and transposon activation. eLife. 8, 42530.","ama":"He S, Vickers M, Zhang J, Feng X. Natural depletion of histone H1 in sex cells causes DNA demethylation, heterochromatin decondensation and transposon activation. eLife. 2019;8. doi:10.7554/elife.42530","ieee":"S. He, M. Vickers, J. Zhang, and X. Feng, “Natural depletion of histone H1 in sex cells causes DNA demethylation, heterochromatin decondensation and transposon activation,” eLife, vol. 8. eLife Sciences Publications, 2019.","short":"S. He, M. Vickers, J. Zhang, X. Feng, ELife 8 (2019).","chicago":"He, Shengbo, Martin Vickers, Jingyi Zhang, and Xiaoqi Feng. “Natural Depletion of Histone H1 in Sex Cells Causes DNA Demethylation, Heterochromatin Decondensation and Transposon Activation.” ELife. eLife Sciences Publications, 2019. https://doi.org/10.7554/elife.42530.","mla":"He, Shengbo, et al. “Natural Depletion of Histone H1 in Sex Cells Causes DNA Demethylation, Heterochromatin Decondensation and Transposon Activation.” ELife, vol. 8, 42530, eLife Sciences Publications, 2019, doi:10.7554/elife.42530."},"author":[{"full_name":"He, Shengbo","first_name":"Shengbo","last_name":"He"},{"full_name":"Vickers, Martin","last_name":"Vickers","first_name":"Martin"},{"last_name":"Zhang","first_name":"Jingyi","full_name":"Zhang, Jingyi"},{"id":"e0164712-22ee-11ed-b12a-d80fcdf35958","orcid":"0000-0002-4008-1234","full_name":"Feng, Xiaoqi","first_name":"Xiaoqi","last_name":"Feng"}],"day":"28","publication_status":"published","oa":1,"has_accepted_license":"1","month":"05","article_type":"original","tmp":{"image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"date_created":"2023-01-16T09:17:21Z","acknowledgement":"We thank David Twell for the pDONR-P4-P1R-pLAT52 and pDONR-P2R-P3-mRFP vectors, the John Innes Centre Bioimaging Facility (Elaine Barclay and Grant Calder) for their assistance with microscopy, and the Norwich BioScience Institute Partnership Computing infrastructure for Science Group for High Performance Computing resources. This work was funded by a Biotechnology and Biological Sciences Research Council (BBSRC) David Phillips Fellowship (BB/L025043/1; SH, JZ and XF), a European Research Council Starting Grant ('SexMeth' 804981; XF) and a Grant to Exceptional Researchers by the Gatsby Charitable Foundation (SH and XF).","language":[{"iso":"eng"}],"quality_controlled":"1","department":[{"_id":"XiFe"}],"publisher":"eLife Sciences Publications","_id":"12192","ddc":["580"],"date_published":"2019-05-28T00:00:00Z","intvolume":" 8","abstract":[{"text":"Transposable elements (TEs), the movement of which can damage the genome, are epigenetically silenced in eukaryotes. Intriguingly, TEs are activated in the sperm companion cell – vegetative cell (VC) – of the flowering plant Arabidopsis thaliana. However, the extent and mechanism of this activation are unknown. Here we show that about 100 heterochromatic TEs are activated in VCs, mostly by DEMETER-catalyzed DNA demethylation. We further demonstrate that DEMETER access to some of these TEs is permitted by the natural depletion of linker histone H1 in VCs. Ectopically expressed H1 suppresses TEs in VCs by reducing DNA demethylation and via a methylation-independent mechanism. We demonstrate that H1 is required for heterochromatin condensation in plant cells and show that H1 overexpression creates heterochromatic foci in the VC progenitor cell. Taken together, our results demonstrate that the natural depletion of H1 during male gametogenesis facilitates DEMETER-directed DNA demethylation, heterochromatin relaxation, and TE activation.","lang":"eng"}],"external_id":{"unknown":["31135340"]}},{"issue":"1","scopus_import":"1","oa_version":"Published Version","year":"2019","isi":1,"volume":149,"status":"public","date_updated":"2025-04-14T07:43:05Z","doi":"10.1111/jnc.14601","article_processing_charge":"Yes (via OA deal)","title":"Epigenetic cues modulating the generation of cell type diversity in the cerebral cortex","corr_author":"1","type":"journal_article","publication":"Journal of Neurochemistry","file":[{"access_level":"open_access","checksum":"db027721a95d36f5de36aadcd0bdf7e6","content_type":"application/pdf","file_id":"7239","creator":"kschuh","date_updated":"2020-07-14T12:45:45Z","file_name":"2019_Wiley_Amberg.pdf","file_size":889709,"date_created":"2020-01-07T13:35:52Z","relation":"main_file"}],"project":[{"grant_number":"LS13-002","_id":"25D92700-B435-11E9-9278-68D0E5697425","name":"Mapping Cell-Type Specificity of the Genomic Imprintome in the Brain"},{"_id":"25D7962E-B435-11E9-9278-68D0E5697425","name":"Quantitative Structure-Function Analysis of Cerebral Cortex Assembly at Clonal Level","grant_number":"RGP0053/2014"},{"grant_number":"618444","name":"Molecular Mechanisms of Cerebral Cortex Development","_id":"25D61E48-B435-11E9-9278-68D0E5697425","call_identifier":"FP7"},{"grant_number":"725780","call_identifier":"H2020","name":"Principles of Neural Stem Cell Lineage Progression in Cerebral Cortex Development","_id":"260018B0-B435-11E9-9278-68D0E5697425"}],"abstract":[{"lang":"eng","text":"The cerebral cortex is composed of a large variety of distinct cell-types including projection neurons, interneurons and glial cells which emerge from distinct neural stem cell (NSC) lineages. The vast majority of cortical projection neurons and certain classes of glial cells are generated by radial glial progenitor cells (RGPs) in a highly orchestrated manner. Recent studies employing single cell analysis and clonal lineage tracing suggest that NSC and RGP lineage progression are regulated in a profound deterministic manner. In this review we focus on recent advances based mainly on correlative phenotypic data emerging from functional genetic studies in mice. We establish hypotheses to test in future research and outline a conceptual framework how epigenetic cues modulate the generation of cell-type diversity during cortical development. This article is protected by copyright. All rights reserved."}],"intvolume":" 149","external_id":{"isi":["000462680200002"]},"_id":"27","ddc":["570"],"publisher":"Wiley","date_published":"2019-04-01T00:00:00Z","language":[{"iso":"eng"}],"quality_controlled":"1","department":[{"_id":"SiHi"}],"tmp":{"image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"date_created":"2018-12-11T11:44:14Z","acknowledgement":" This work was supported by IST Austria institutional funds; NÖ Forschung und Bildung \r\nn[f+b] (C13-002) to SH; a program grant from the Human Frontiers Science Program (RGP0053/2014) to SH; the People Programme (Marie Curie Actions) of the European Union’s Seventh Framework Programme (FP7/2007-2013) under REA grant agreement No 618444 to SH, and the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 725780 LinPro)to SH.\r\n","article_type":"review","month":"04","oa":1,"has_accepted_license":"1","author":[{"last_name":"Amberg","first_name":"Nicole","full_name":"Amberg, Nicole","orcid":"0000-0002-3183-8207","id":"4CD6AAC6-F248-11E8-B48F-1D18A9856A87"},{"id":"2D6B7A9A-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-7903-3010","full_name":"Laukoter, Susanne","last_name":"Laukoter","first_name":"Susanne"},{"first_name":"Simon","last_name":"Hippenmeyer","orcid":"0000-0003-2279-1061","full_name":"Hippenmeyer, Simon","id":"37B36620-F248-11E8-B48F-1D18A9856A87"}],"citation":{"chicago":"Amberg, Nicole, Susanne Laukoter, and Simon Hippenmeyer. “Epigenetic Cues Modulating the Generation of Cell Type Diversity in the Cerebral Cortex.” Journal of Neurochemistry. Wiley, 2019. https://doi.org/10.1111/jnc.14601.","mla":"Amberg, Nicole, et al. “Epigenetic Cues Modulating the Generation of Cell Type Diversity in the Cerebral Cortex.” Journal of Neurochemistry, vol. 149, no. 1, Wiley, 2019, pp. 12–26, doi:10.1111/jnc.14601.","short":"N. Amberg, S. Laukoter, S. Hippenmeyer, Journal of Neurochemistry 149 (2019) 12–26.","ista":"Amberg N, Laukoter S, Hippenmeyer S. 2019. Epigenetic cues modulating the generation of cell type diversity in the cerebral cortex. Journal of Neurochemistry. 149(1), 12–26.","ieee":"N. Amberg, S. Laukoter, and S. Hippenmeyer, “Epigenetic cues modulating the generation of cell type diversity in the cerebral cortex,” Journal of Neurochemistry, vol. 149, no. 1. Wiley, pp. 12–26, 2019.","ama":"Amberg N, Laukoter S, Hippenmeyer S. Epigenetic cues modulating the generation of cell type diversity in the cerebral cortex. Journal of Neurochemistry. 2019;149(1):12-26. doi:10.1111/jnc.14601","apa":"Amberg, N., Laukoter, S., & Hippenmeyer, S. (2019). Epigenetic cues modulating the generation of cell type diversity in the cerebral cortex. Journal of Neurochemistry. Wiley. https://doi.org/10.1111/jnc.14601"},"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","publication_status":"published","day":"01","ec_funded":1,"file_date_updated":"2020-07-14T12:45:45Z","page":"12-26"},{"oa_version":"Preprint","scopus_import":"1","issue":"3","status":"public","date_updated":"2023-08-24T14:20:49Z","year":"2019","isi":1,"arxiv":1,"volume":129,"doi":"10.1016/j.spa.2018.04.003","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1611.04177"}],"type":"journal_article","publication":"Stochastic Processes and their Applications","article_processing_charge":"No","title":"A Feynman–Kac formula for stochastic Dirichlet problems","_id":"301","publisher":"Elsevier","date_published":"2019-03-01T00:00:00Z","abstract":[{"lang":"eng","text":"A representation formula for solutions of stochastic partial differential equations with Dirichlet boundary conditions is proved. The scope of our setting is wide enough to cover the general situation when the backward characteristics that appear in the usual formulation are not even defined in the Itô sense."}],"intvolume":" 129","external_id":{"arxiv":["1611.04177"],"isi":["000458945300012"]},"date_created":"2018-12-11T11:45:42Z","language":[{"iso":"eng"}],"quality_controlled":"1","department":[{"_id":"JaMa"}],"oa":1,"article_type":"original","month":"03","page":"995-1012","citation":{"apa":"Gerencser, M., & Gyöngy, I. (2019). A Feynman–Kac formula for stochastic Dirichlet problems. Stochastic Processes and Their Applications. Elsevier. https://doi.org/10.1016/j.spa.2018.04.003","mla":"Gerencser, Mate, and István Gyöngy. “A Feynman–Kac Formula for Stochastic Dirichlet Problems.” Stochastic Processes and Their Applications, vol. 129, no. 3, Elsevier, 2019, pp. 995–1012, doi:10.1016/j.spa.2018.04.003.","chicago":"Gerencser, Mate, and István Gyöngy. “A Feynman–Kac Formula for Stochastic Dirichlet Problems.” Stochastic Processes and Their Applications. Elsevier, 2019. https://doi.org/10.1016/j.spa.2018.04.003.","ista":"Gerencser M, Gyöngy I. 2019. A Feynman–Kac formula for stochastic Dirichlet problems. Stochastic Processes and their Applications. 129(3), 995–1012.","ama":"Gerencser M, Gyöngy I. A Feynman–Kac formula for stochastic Dirichlet problems. Stochastic Processes and their Applications. 2019;129(3):995-1012. doi:10.1016/j.spa.2018.04.003","ieee":"M. Gerencser and I. Gyöngy, “A Feynman–Kac formula for stochastic Dirichlet problems,” Stochastic Processes and their Applications, vol. 129, no. 3. Elsevier, pp. 995–1012, 2019.","short":"M. Gerencser, I. Gyöngy, Stochastic Processes and Their Applications 129 (2019) 995–1012."},"author":[{"last_name":"Gerencser","first_name":"Mate","id":"44ECEDF2-F248-11E8-B48F-1D18A9856A87","full_name":"Gerencser, Mate"},{"last_name":"Gyöngy","first_name":"István","full_name":"Gyöngy, István"}],"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","publication_status":"published","day":"01"},{"publication_identifier":{"eissn":["1521-4095"],"issn":["0935-9648"]},"doi":"10.1002/adma.201905866","title":"The many ways to assemble nanoparticles using light","article_processing_charge":"No","type":"journal_article","publication":"Advanced Materials","issue":"20","scopus_import":"1","oa_version":"None","keyword":["Mechanical Engineering","Mechanics of Materials","General Materials Science"],"article_number":"1905866","volume":32,"year":"2019","extern":"1","date_updated":"2024-10-14T12:13:25Z","status":"public","month":"11","article_type":"original","day":"19","publication_status":"published","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","pmid":1,"citation":{"apa":"Bian, T., Chu, Z., & Klajn, R. (2019). The many ways to assemble nanoparticles using light. Advanced Materials. Wiley. https://doi.org/10.1002/adma.201905866","short":"T. Bian, Z. Chu, R. Klajn, Advanced Materials 32 (2019).","ista":"Bian T, Chu Z, Klajn R. 2019. The many ways to assemble nanoparticles using light. Advanced Materials. 32(20), 1905866.","ama":"Bian T, Chu Z, Klajn R. The many ways to assemble nanoparticles using light. Advanced Materials. 2019;32(20). doi:10.1002/adma.201905866","ieee":"T. Bian, Z. Chu, and R. Klajn, “The many ways to assemble nanoparticles using light,” Advanced Materials, vol. 32, no. 20. Wiley, 2019.","mla":"Bian, Tong, et al. “The Many Ways to Assemble Nanoparticles Using Light.” Advanced Materials, vol. 32, no. 20, 1905866, Wiley, 2019, doi:10.1002/adma.201905866.","chicago":"Bian, Tong, Zonglin Chu, and Rafal Klajn. “The Many Ways to Assemble Nanoparticles Using Light.” Advanced Materials. Wiley, 2019. https://doi.org/10.1002/adma.201905866."},"author":[{"full_name":"Bian, Tong","last_name":"Bian","first_name":"Tong"},{"last_name":"Chu","first_name":"Zonglin","full_name":"Chu, Zonglin"},{"full_name":"Klajn, Rafal","id":"8e84690e-1e48-11ed-a02b-a1e6fb8bb53b","last_name":"Klajn","first_name":"Rafal"}],"external_id":{"pmid":["31709655"]},"intvolume":" 32","abstract":[{"lang":"eng","text":"The ability to reversibly assemble nanoparticles using light is both fundamentally interesting and important for applications ranging from reversible data storage to controlled drug delivery. Here, the diverse approaches that have so far been developed to control the self-assembly of nanoparticles using light are reviewed and compared. These approaches include functionalizing nanoparticles with monolayers of photoresponsive molecules, placing them in photoresponsive media capable of reversibly protonating the particles under light, and decorating plasmonic nanoparticles with thermoresponsive polymers, to name just a few. The applicability of these methods to larger, micrometer-sized particles is also discussed. Finally, several perspectives on further developments in the field are offered."}],"date_published":"2019-11-19T00:00:00Z","publisher":"Wiley","_id":"13366","quality_controlled":"1","language":[{"iso":"eng"}],"date_created":"2023-08-01T09:37:26Z"},{"extern":"1","year":"2019","volume":15,"status":"public","date_updated":"2024-10-14T12:13:46Z","scopus_import":"1","keyword":["Organic Chemistry"],"oa_version":"Published Version","article_processing_charge":"No","title":"Reversible switching of arylazopyrazole within a metal–organic cage","publication":"Beilstein Journal of Organic Chemistry","type":"journal_article","main_file_link":[{"url":"https://doi.org/10.3762/bjoc.15.232","open_access":"1"}],"publication_identifier":{"eissn":["1860-5397"]},"doi":"10.3762/bjoc.15.232","language":[{"iso":"eng"}],"quality_controlled":"1","date_created":"2023-08-01T09:38:06Z","intvolume":" 15","abstract":[{"text":"Arylazopyrazoles represent a new family of molecular photoswitches characterized by a near-quantitative conversion between two states and long thermal half-lives of the metastable state. Here, we investigated the behavior of a model arylazopyrazole in the presence of a self-assembled cage based on Pd–imidazole coordination. Owing to its high water solubility, the cage can solubilize the E isomer of arylazopyrazole, which, by itself, is not soluble in water. NMR spectroscopy and X-ray crystallography have independently demonstrated that each cage can encapsulate two molecules of E-arylazopyrazole. UV-induced switching to the Z isomer was accompanied by the release of one of the two guests from the cage and the formation of a 1:1 cage/Z-arylazopyrazole inclusion complex. DFT calculations suggest that this process involves a dramatic change in the conformation of the cage. Back-isomerization was induced with green light and resulted in the initial 1:2 cage/E-arylazopyrazole complex. This back-isomerization reaction also proceeded in the dark, with a rate significantly higher than in the absence of the cage.","lang":"eng"}],"external_id":{"pmid":["31666874"]},"publisher":"Beilstein Institut","_id":"13369","date_published":"2019-10-10T00:00:00Z","pmid":1,"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","author":[{"full_name":"Hanopolskyi, Anton I","first_name":"Anton I","last_name":"Hanopolskyi"},{"last_name":"De","first_name":"Soumen","full_name":"De, Soumen"},{"last_name":"Białek","first_name":"Michał J","full_name":"Białek, Michał J"},{"full_name":"Diskin-Posner, Yael","first_name":"Yael","last_name":"Diskin-Posner"},{"full_name":"Avram, Liat","last_name":"Avram","first_name":"Liat"},{"full_name":"Feller, Moran","first_name":"Moran","last_name":"Feller"},{"full_name":"Klajn, Rafal","id":"8e84690e-1e48-11ed-a02b-a1e6fb8bb53b","first_name":"Rafal","last_name":"Klajn"}],"citation":{"apa":"Hanopolskyi, A. I., De, S., Białek, M. J., Diskin-Posner, Y., Avram, L., Feller, M., & Klajn, R. (2019). Reversible switching of arylazopyrazole within a metal–organic cage. Beilstein Journal of Organic Chemistry. Beilstein Institut. https://doi.org/10.3762/bjoc.15.232","short":"A.I. Hanopolskyi, S. De, M.J. Białek, Y. Diskin-Posner, L. Avram, M. Feller, R. Klajn, Beilstein Journal of Organic Chemistry 15 (2019) 2398–2407.","ama":"Hanopolskyi AI, De S, Białek MJ, et al. Reversible switching of arylazopyrazole within a metal–organic cage. Beilstein Journal of Organic Chemistry. 2019;15:2398-2407. doi:10.3762/bjoc.15.232","ieee":"A. I. Hanopolskyi et al., “Reversible switching of arylazopyrazole within a metal–organic cage,” Beilstein Journal of Organic Chemistry, vol. 15. Beilstein Institut, pp. 2398–2407, 2019.","ista":"Hanopolskyi AI, De S, Białek MJ, Diskin-Posner Y, Avram L, Feller M, Klajn R. 2019. Reversible switching of arylazopyrazole within a metal–organic cage. Beilstein Journal of Organic Chemistry. 15, 2398–2407.","mla":"Hanopolskyi, Anton I., et al. “Reversible Switching of Arylazopyrazole within a Metal–Organic Cage.” Beilstein Journal of Organic Chemistry, vol. 15, Beilstein Institut, 2019, pp. 2398–407, doi:10.3762/bjoc.15.232.","chicago":"Hanopolskyi, Anton I, Soumen De, Michał J Białek, Yael Diskin-Posner, Liat Avram, Moran Feller, and Rafal Klajn. “Reversible Switching of Arylazopyrazole within a Metal–Organic Cage.” Beilstein Journal of Organic Chemistry. Beilstein Institut, 2019. https://doi.org/10.3762/bjoc.15.232."},"day":"10","publication_status":"published","page":"2398-2407","month":"10","article_type":"original","oa":1},{"_id":"13370","publisher":"American Chemical Society","date_published":"2019-09-20T00:00:00Z","abstract":[{"lang":"eng","text":"Efficient isomerization of photochromic molecules often requires conformational freedom and is typically not available under solvent-free conditions. Here, we report a general methodology allowing for reversible switching of such molecules on the surfaces of solid materials. Our method is based on dispersing photochromic compounds within polysilsesquioxane nanowire networks (PNNs), which can be fabricated as transparent, highly porous, micrometer-thick layers on various substrates. We found that azobenzene switching within the PNNs proceeded unusually fast compared with the same molecules in liquid solvents. Efficient isomerization of another photochromic system, spiropyran, from a colorless to a colored form was used to create reversible images in PNN-coated glass. The coloration reaction could be induced with sunlight and is of interest for developing “smart” windows."}],"intvolume":" 19","external_id":{"pmid":["31539469"]},"date_created":"2023-08-01T09:38:23Z","language":[{"iso":"eng"}],"quality_controlled":"1","article_type":"original","month":"09","page":"7106-7111","citation":{"apa":"Chu, Z., & Klajn, R. (2019). Polysilsesquioxane nanowire networks as an “Artificial Solvent” for reversible operation of photochromic molecules. Nano Letters. American Chemical Society. https://doi.org/10.1021/acs.nanolett.9b02642","ista":"Chu Z, Klajn R. 2019. Polysilsesquioxane nanowire networks as an “Artificial Solvent” for reversible operation of photochromic molecules. Nano Letters. 19(10), 7106–7111.","ieee":"Z. Chu and R. Klajn, “Polysilsesquioxane nanowire networks as an ‘Artificial Solvent’ for reversible operation of photochromic molecules,” Nano Letters, vol. 19, no. 10. American Chemical Society, pp. 7106–7111, 2019.","ama":"Chu Z, Klajn R. Polysilsesquioxane nanowire networks as an “Artificial Solvent” for reversible operation of photochromic molecules. Nano Letters. 2019;19(10):7106-7111. doi:10.1021/acs.nanolett.9b02642","short":"Z. Chu, R. Klajn, Nano Letters 19 (2019) 7106–7111.","chicago":"Chu, Zonglin, and Rafal Klajn. “Polysilsesquioxane Nanowire Networks as an ‘Artificial Solvent’ for Reversible Operation of Photochromic Molecules.” Nano Letters. American Chemical Society, 2019. https://doi.org/10.1021/acs.nanolett.9b02642.","mla":"Chu, Zonglin, and Rafal Klajn. “Polysilsesquioxane Nanowire Networks as an ‘Artificial Solvent’ for Reversible Operation of Photochromic Molecules.” Nano Letters, vol. 19, no. 10, American Chemical Society, 2019, pp. 7106–11, doi:10.1021/acs.nanolett.9b02642."},"author":[{"last_name":"Chu","first_name":"Zonglin","full_name":"Chu, Zonglin"},{"first_name":"Rafal","last_name":"Klajn","full_name":"Klajn, Rafal","id":"8e84690e-1e48-11ed-a02b-a1e6fb8bb53b"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","pmid":1,"publication_status":"published","day":"20","keyword":["Mechanical Engineering","Condensed Matter Physics","General Materials Science","General Chemistry","Bioengineering"],"oa_version":"None","scopus_import":"1","issue":"10","status":"public","date_updated":"2024-10-14T12:13:57Z","extern":"1","year":"2019","volume":19,"doi":"10.1021/acs.nanolett.9b02642","publication_identifier":{"eissn":["1530-6992"],"issn":["1530-6984"]},"type":"journal_article","publication":"Nano Letters","article_processing_charge":"No","title":"Polysilsesquioxane nanowire networks as an “Artificial Solvent” for reversible operation of photochromic molecules"},{"oa":1,"month":"09","article_type":"original","page":"2283-2285","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","author":[{"first_name":"Michał J.","last_name":"Białek","full_name":"Białek, Michał J."},{"id":"8e84690e-1e48-11ed-a02b-a1e6fb8bb53b","full_name":"Klajn, Rafal","last_name":"Klajn","first_name":"Rafal"}],"citation":{"apa":"Białek, M. J., & Klajn, R. (2019). Diamond grows up. Chem. Elsevier. https://doi.org/10.1016/j.chempr.2019.08.012","mla":"Białek, Michał J., and Rafal Klajn. “Diamond Grows Up.” Chem, vol. 5, no. 9, Elsevier, 2019, pp. 2283–85, doi:10.1016/j.chempr.2019.08.012.","chicago":"Białek, Michał J., and Rafal Klajn. “Diamond Grows Up.” Chem. Elsevier, 2019. https://doi.org/10.1016/j.chempr.2019.08.012.","short":"M.J. Białek, R. Klajn, Chem 5 (2019) 2283–2285.","ieee":"M. J. Białek and R. Klajn, “Diamond grows up,” Chem, vol. 5, no. 9. Elsevier, pp. 2283–2285, 2019.","ista":"Białek MJ, Klajn R. 2019. Diamond grows up. Chem. 5(9), 2283–2285.","ama":"Białek MJ, Klajn R. Diamond grows up. Chem. 2019;5(9):2283-2285. doi:10.1016/j.chempr.2019.08.012"},"day":"12","publication_status":"published","publisher":"Elsevier","_id":"13371","date_published":"2019-09-12T00:00:00Z","intvolume":" 5","abstract":[{"lang":"eng","text":"Diamondoid nanoporous crystals represent a synthetically challenging class of materials that typically have been obtained from tetrahedral building blocks. In this issue of Chem, Stoddart and coworkers demonstrate that it is possible to generate diamondoid frameworks from a hexacationic building block lacking a tetrahedral symmetry. These results highlight the great potential of self-assembly for rapidly transforming small molecules into structurally complex functional materials."}],"date_created":"2023-08-01T09:38:38Z","language":[{"iso":"eng"}],"quality_controlled":"1","doi":"10.1016/j.chempr.2019.08.012","main_file_link":[{"url":"https://doi.org/10.1016/j.chempr.2019.08.012","open_access":"1"}],"publication_identifier":{"issn":["2451-9308"],"eissn":["2451-9294"]},"type":"journal_article","publication":"Chem","article_processing_charge":"No","title":"Diamond grows up","keyword":["Materials Chemistry","Biochemistry (medical)","General Chemical Engineering","Environmental Chemistry","Biochemistry","General Chemistry"],"oa_version":"Published Version","issue":"9","scopus_import":"1","status":"public","date_updated":"2024-10-14T12:14:05Z","year":"2019","extern":"1","volume":5},{"year":"2019","extern":"1","volume":48,"status":"public","date_updated":"2024-10-14T12:14:14Z","issue":"5","scopus_import":"1","keyword":["General Chemistry"],"oa_version":"Published Version","article_processing_charge":"No","title":"Stimuli-responsive self-assembly of nanoparticles","publication":"Chemical Society Reviews","type":"journal_article","main_file_link":[{"open_access":"1","url":"https://doi.org/10.1039/C8CS00787J"}],"publication_identifier":{"eissn":["1460-4744"],"issn":["0306-0012"]},"doi":"10.1039/c8cs00787j","quality_controlled":"1","language":[{"iso":"eng"}],"date_created":"2023-08-01T09:38:52Z","intvolume":" 48","abstract":[{"lang":"eng","text":"The capacity to respond or adapt to environmental changes is an intrinsic property of living systems that comprise highly-connected subcomponents communicating through chemical networks. The development of responsive synthetic systems is a relatively new research area that covers different disciplines, among which nanochemistry brings conceptually new demonstrations. Especially attractive are ligand-protected gold nanoparticles, which have been extensively used over the last decade as building blocks in constructing superlattices or dynamic aggregates, under the effect of an applied stimulus. To reflect the importance of surface chemistry and nanoparticle core composition in the dynamic self-assembly of nanoparticles, we provide here an overview of various available stimuli, as tools for synthetic chemists to exploit. Along with this task, the review starts with the use of chemical stimuli such as solvent, pH, gases, metal ions or biomolecules. It then focuses on physical stimuli: temperature, magnetic and electric fields, as well as light. To reflect on the increasing complexity of current architectures, we discuss systems that are responsive to more than one stimulus, to finally encourage further research by proposing future challenges."}],"external_id":{"pmid":["30688963"]},"publisher":"Royal Society of Chemistry","_id":"13372","date_published":"2019-01-28T00:00:00Z","pmid":1,"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","author":[{"first_name":"Marek","last_name":"Grzelczak","full_name":"Grzelczak, Marek"},{"full_name":"Liz-Marzán, Luis M.","first_name":"Luis M.","last_name":"Liz-Marzán"},{"full_name":"Klajn, Rafal","id":"8e84690e-1e48-11ed-a02b-a1e6fb8bb53b","last_name":"Klajn","first_name":"Rafal"}],"citation":{"chicago":"Grzelczak, Marek, Luis M. Liz-Marzán, and Rafal Klajn. “Stimuli-Responsive Self-Assembly of Nanoparticles.” Chemical Society Reviews. Royal Society of Chemistry, 2019. https://doi.org/10.1039/c8cs00787j.","mla":"Grzelczak, Marek, et al. “Stimuli-Responsive Self-Assembly of Nanoparticles.” Chemical Society Reviews, vol. 48, no. 5, Royal Society of Chemistry, 2019, pp. 1342–61, doi:10.1039/c8cs00787j.","short":"M. Grzelczak, L.M. Liz-Marzán, R. Klajn, Chemical Society Reviews 48 (2019) 1342–1361.","ista":"Grzelczak M, Liz-Marzán LM, Klajn R. 2019. Stimuli-responsive self-assembly of nanoparticles. Chemical Society Reviews. 48(5), 1342–1361.","ama":"Grzelczak M, Liz-Marzán LM, Klajn R. Stimuli-responsive self-assembly of nanoparticles. Chemical Society Reviews. 2019;48(5):1342-1361. doi:10.1039/c8cs00787j","ieee":"M. Grzelczak, L. M. Liz-Marzán, and R. Klajn, “Stimuli-responsive self-assembly of nanoparticles,” Chemical Society Reviews, vol. 48, no. 5. Royal Society of Chemistry, pp. 1342–1361, 2019.","apa":"Grzelczak, M., Liz-Marzán, L. M., & Klajn, R. (2019). Stimuli-responsive self-assembly of nanoparticles. Chemical Society Reviews. Royal Society of Chemistry. https://doi.org/10.1039/c8cs00787j"},"day":"28","publication_status":"published","page":"1342-1361","month":"01","article_type":"original","oa":1},{"article_processing_charge":"No","title":"Supramolecular control of azobenzene switching on nanoparticles","type":"journal_article","publication":"Journal of the American Chemical Society","publication_identifier":{"issn":["0002-7863"],"eissn":["1520-5126"]},"doi":"10.1021/jacs.8b09638","year":"2019","extern":"1","volume":141,"status":"public","date_updated":"2024-10-14T12:14:23Z","scopus_import":"1","issue":"5","keyword":["Colloid and Surface Chemistry","Biochemistry","General Chemistry","Catalysis"],"oa_version":"Published Version","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","pmid":1,"citation":{"mla":"Chu, Zonglin, et al. “Supramolecular Control of Azobenzene Switching on Nanoparticles.” Journal of the American Chemical Society, vol. 141, no. 5, American Chemical Society, 2019, pp. 1949–60, doi:10.1021/jacs.8b09638.","chicago":"Chu, Zonglin, Yanxiao Han, Tong Bian, Soumen De, Petr Král, and Rafal Klajn. “Supramolecular Control of Azobenzene Switching on Nanoparticles.” Journal of the American Chemical Society. American Chemical Society, 2019. https://doi.org/10.1021/jacs.8b09638.","short":"Z. Chu, Y. Han, T. Bian, S. De, P. Král, R. Klajn, Journal of the American Chemical Society 141 (2019) 1949–1960.","ieee":"Z. Chu, Y. Han, T. Bian, S. De, P. Král, and R. Klajn, “Supramolecular control of azobenzene switching on nanoparticles,” Journal of the American Chemical Society, vol. 141, no. 5. American Chemical Society, pp. 1949–1960, 2019.","ama":"Chu Z, Han Y, Bian T, De S, Král P, Klajn R. Supramolecular control of azobenzene switching on nanoparticles. Journal of the American Chemical Society. 2019;141(5):1949-1960. doi:10.1021/jacs.8b09638","ista":"Chu Z, Han Y, Bian T, De S, Král P, Klajn R. 2019. Supramolecular control of azobenzene switching on nanoparticles. Journal of the American Chemical Society. 141(5), 1949–1960.","apa":"Chu, Z., Han, Y., Bian, T., De, S., Král, P., & Klajn, R. (2019). Supramolecular control of azobenzene switching on nanoparticles. Journal of the American Chemical Society. American Chemical Society. https://doi.org/10.1021/jacs.8b09638"},"author":[{"full_name":"Chu, Zonglin","first_name":"Zonglin","last_name":"Chu"},{"full_name":"Han, Yanxiao","last_name":"Han","first_name":"Yanxiao"},{"full_name":"Bian, Tong","first_name":"Tong","last_name":"Bian"},{"first_name":"Soumen","last_name":"De","full_name":"De, Soumen"},{"full_name":"Král, Petr","first_name":"Petr","last_name":"Král"},{"id":"8e84690e-1e48-11ed-a02b-a1e6fb8bb53b","full_name":"Klajn, Rafal","last_name":"Klajn","first_name":"Rafal"}],"day":"06","publication_status":"published","page":"1949-1960","month":"02","article_type":"original","quality_controlled":"1","language":[{"iso":"eng"}],"date_created":"2023-08-01T09:39:19Z","intvolume":" 141","abstract":[{"lang":"eng","text":"The reversible photoisomerization of azobenzene has been utilized to construct a plethora of systems in which optical, electronic, catalytic, and other properties can be controlled by light. However, owing to azobenzene’s hydrophobic nature, most of these examples have been realized only in organic solvents, and systems operating in water are relatively scarce. Here, we show that by coadsorbing the inherently hydrophobic azobenzenes with water-solubilizing ligands on the same nanoparticulate platforms, it is possible to render them essentially water-soluble. To this end, we developed a modified nanoparticle functionalization procedure allowing us to precisely fine-tune the amount of azobenzene on the functionalized nanoparticles. Molecular dynamics simulations helped us to identify two distinct supramolecular architectures (depending on the length of the background ligand) on these nanoparticles, which can explain their excellent aqueous solubilities. Azobenzenes adsorbed on these water-soluble nanoparticles exhibit highly reversible photoisomerization upon exposure to UV and visible light. Importantly, the mixed-monolayer approach allowed us to systematically investigate how the background ligand affects the switching properties of azobenzene. We found that the nature of the background ligand has a profound effect on the kinetics of azobenzene switching. For example, a hydroxy-terminated background ligand is capable of accelerating the back-isomerization reaction by more than 6000-fold. These results pave the way toward the development of novel light-responsive nanomaterials operating in aqueous media and, in the long run, in biological environments."}],"external_id":{"pmid":["30595017"]},"publisher":"American Chemical Society","_id":"13373","date_published":"2019-02-06T00:00:00Z"},{"year":"2019","arxiv":1,"extern":"1","volume":631,"article_number":"A5","status":"public","date_updated":"2023-08-09T12:36:09Z","scopus_import":"1","keyword":["Space and Planetary Science","Astronomy and Astrophysics"],"oa_version":"Published Version","article_processing_charge":"No","title":"The diverse lives of progenitors of hydrogen-rich core-collapse supernovae: The role of binary interaction","type":"journal_article","publication":"Astronomy & Astrophysics","main_file_link":[{"url":"https://doi.org/10.1051/0004-6361/201935854","open_access":"1"}],"publication_identifier":{"issn":["0004-6361"],"eissn":["1432-0746"]},"doi":"10.1051/0004-6361/201935854","language":[{"iso":"eng"}],"quality_controlled":"1","date_created":"2023-08-03T10:13:52Z","abstract":[{"lang":"eng","text":"Hydrogen-rich supernovae, known as Type II (SNe II), are the most common class of explosions observed following the collapse of the core of massive stars. We used analytical estimates and population synthesis simulations to assess the fraction of SNe II progenitors that are expected to have exchanged mass with a companion prior to explosion. We estimate that 1/3 to 1/2 of SN II progenitors have a history of mass exchange with a binary companion before exploding. The dominant binary channels leading to SN II progenitors involve the merger of binary stars. Mergers are expected to produce a diversity of SN II progenitor characteristics, depending on the evolutionary timing and properties of the merger. Alternatively, SN II progenitors from interacting binaries may have accreted mass from their companion, and subsequently been ejected from the binary system after their companion exploded. We show that the overall fraction of SN II progenitors that are predicted to have experienced binary interaction is robust against the main physical uncertainties in our models. However, the relative importance of different binary evolutionary channels is affected by changing physical assumptions. We further discuss ways in which binarity might contribute to the observed diversity of SNe II by considering potential observational signatures arising from each binary channel. For supernovae which have a substantial H-rich envelope at explosion (i.e., excluding Type IIb SNe), a surviving non-compact companion would typically indicate that the supernova progenitor star was in a wide, non-interacting binary. We argue that a significant fraction of even Type II-P SNe are expected to have gained mass from a companion prior to explosion."}],"intvolume":" 631","external_id":{"arxiv":["1907.06687"]},"_id":"13468","publisher":"EDP Sciences","date_published":"2019-11-20T00:00:00Z","citation":{"short":"E. Zapartas, S.E. de Mink, S. Justham, N. Smith, A. de Koter, M. Renzo, I. Arcavi, R. Farmer, Y.L.L. Götberg, S. Toonen, Astronomy & Astrophysics 631 (2019).","ieee":"E. Zapartas et al., “The diverse lives of progenitors of hydrogen-rich core-collapse supernovae: The role of binary interaction,” Astronomy & Astrophysics, vol. 631. EDP Sciences, 2019.","ista":"Zapartas E, de Mink SE, Justham S, Smith N, de Koter A, Renzo M, Arcavi I, Farmer R, Götberg YLL, Toonen S. 2019. The diverse lives of progenitors of hydrogen-rich core-collapse supernovae: The role of binary interaction. Astronomy & Astrophysics. 631, A5.","ama":"Zapartas E, de Mink SE, Justham S, et al. The diverse lives of progenitors of hydrogen-rich core-collapse supernovae: The role of binary interaction. Astronomy & Astrophysics. 2019;631. doi:10.1051/0004-6361/201935854","mla":"Zapartas, Emmanouil, et al. “The Diverse Lives of Progenitors of Hydrogen-Rich Core-Collapse Supernovae: The Role of Binary Interaction.” Astronomy & Astrophysics, vol. 631, A5, EDP Sciences, 2019, doi:10.1051/0004-6361/201935854.","chicago":"Zapartas, Emmanouil, Selma E. de Mink, Stephen Justham, Nathan Smith, Alex de Koter, Mathieu Renzo, Iair Arcavi, Rob Farmer, Ylva Louise Linsdotter Götberg, and Silvia Toonen. “The Diverse Lives of Progenitors of Hydrogen-Rich Core-Collapse Supernovae: The Role of Binary Interaction.” Astronomy & Astrophysics. EDP Sciences, 2019. https://doi.org/10.1051/0004-6361/201935854.","apa":"Zapartas, E., de Mink, S. E., Justham, S., Smith, N., de Koter, A., Renzo, M., … Toonen, S. (2019). The diverse lives of progenitors of hydrogen-rich core-collapse supernovae: The role of binary interaction. Astronomy & Astrophysics. EDP Sciences. https://doi.org/10.1051/0004-6361/201935854"},"author":[{"full_name":"Zapartas, Emmanouil","first_name":"Emmanouil","last_name":"Zapartas"},{"last_name":"de Mink","first_name":"Selma E.","full_name":"de Mink, Selma E."},{"first_name":"Stephen","last_name":"Justham","full_name":"Justham, Stephen"},{"full_name":"Smith, Nathan","last_name":"Smith","first_name":"Nathan"},{"first_name":"Alex","last_name":"de Koter","full_name":"de Koter, Alex"},{"last_name":"Renzo","first_name":"Mathieu","full_name":"Renzo, Mathieu"},{"full_name":"Arcavi, Iair","last_name":"Arcavi","first_name":"Iair"},{"full_name":"Farmer, Rob","first_name":"Rob","last_name":"Farmer"},{"first_name":"Ylva Louise Linsdotter","last_name":"Götberg","id":"d0648d0c-0f64-11ee-a2e0-dd0faa2e4f7d","orcid":"0000-0002-6960-6911","full_name":"Götberg, Ylva Louise Linsdotter"},{"full_name":"Toonen, Silvia","first_name":"Silvia","last_name":"Toonen"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publication_status":"published","day":"20","article_type":"original","month":"11","oa":1},{"date_created":"2023-08-03T10:14:00Z","language":[{"iso":"eng"}],"quality_controlled":"1","publisher":"EDP Sciences","_id":"13469","date_published":"2019-09-17T00:00:00Z","intvolume":" 629","abstract":[{"lang":"eng","text":"Stars stripped of their envelopes from interaction with a binary companion emit a significant fraction of their radiation as ionizing photons. They are potentially important stellar sources of ionizing radiation, however, they are still often neglected in spectral synthesis simulations or simulations of stellar feedback. In anticipating the large datasets of galaxy spectra from the upcoming James Webb Space Telescope, we modeled the radiative contribution from stripped stars by using detailed evolutionary and spectral models. We estimated their impact on the integrated spectra and specifically on the emission rates of H I-, He I-, and He II-ionizing photons from stellar populations. We find that stripped stars have the largest impact on the ionizing spectrum of a population in which star formation halted several Myr ago. In such stellar populations, stripped stars dominate the emission of ionizing photons, mimicking a younger stellar population in which massive stars are still present. Our models also suggest that stripped stars have harder ionizing spectra than massive stars. The additional ionizing radiation, with which stripped stars contribute affects observable properties that are related to the emission of ionizing photons from stellar populations. In co-eval stellar populations, the ionizing radiation from stripped stars increases the ionization parameter and the production efficiency of hydrogen ionizing photons. They also cause high values for these parameters for about ten times longer than what is predicted for massive stars. The effect on properties related to non-ionizing wavelengths is less pronounced, such as on the ultraviolet continuum slope or stellar contribution to emission lines. However, the hard ionizing radiation from stripped stars likely introduces a characteristic ionization structure of the nebula, which leads to the emission of highly ionized elements such as O2+ and C3+. We, therefore, expect that the presence of stripped stars affects the location in the BPT diagram and the diagnostic ratio of O III to O II nebular emission lines. Our models are publicly available through CDS database and on the STARBURST99 website."}],"external_id":{"arxiv":["1908.06102"]},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"apa":"Götberg, Y. L. L., de Mink, S. E., Groh, J. H., Leitherer, C., & Norman, C. (2019). The impact of stars stripped in binaries on the integrated spectra of stellar populations. Astronomy & Astrophysics. EDP Sciences. https://doi.org/10.1051/0004-6361/201834525","ista":"Götberg YLL, de Mink SE, Groh JH, Leitherer C, Norman C. 2019. The impact of stars stripped in binaries on the integrated spectra of stellar populations. Astronomy & Astrophysics. 629, A134.","ieee":"Y. L. L. Götberg, S. E. de Mink, J. H. Groh, C. Leitherer, and C. Norman, “The impact of stars stripped in binaries on the integrated spectra of stellar populations,” Astronomy & Astrophysics, vol. 629. EDP Sciences, 2019.","ama":"Götberg YLL, de Mink SE, Groh JH, Leitherer C, Norman C. The impact of stars stripped in binaries on the integrated spectra of stellar populations. Astronomy & Astrophysics. 2019;629. doi:10.1051/0004-6361/201834525","short":"Y.L.L. Götberg, S.E. de Mink, J.H. Groh, C. Leitherer, C. Norman, Astronomy & Astrophysics 629 (2019).","mla":"Götberg, Ylva Louise Linsdotter, et al. “The Impact of Stars Stripped in Binaries on the Integrated Spectra of Stellar Populations.” Astronomy & Astrophysics, vol. 629, A134, EDP Sciences, 2019, doi:10.1051/0004-6361/201834525.","chicago":"Götberg, Ylva Louise Linsdotter, S. E. de Mink, J. H. Groh, C. Leitherer, and C. Norman. “The Impact of Stars Stripped in Binaries on the Integrated Spectra of Stellar Populations.” Astronomy & Astrophysics. EDP Sciences, 2019. https://doi.org/10.1051/0004-6361/201834525."},"author":[{"orcid":"0000-0002-6960-6911","full_name":"Götberg, Ylva Louise Linsdotter","id":"d0648d0c-0f64-11ee-a2e0-dd0faa2e4f7d","last_name":"Götberg","first_name":"Ylva Louise Linsdotter"},{"full_name":"de Mink, S. E.","first_name":"S. E.","last_name":"de Mink"},{"last_name":"Groh","first_name":"J. H.","full_name":"Groh, J. H."},{"full_name":"Leitherer, C.","first_name":"C.","last_name":"Leitherer"},{"first_name":"C.","last_name":"Norman","full_name":"Norman, C."}],"day":"17","publication_status":"published","oa":1,"month":"09","article_type":"original","status":"public","date_updated":"2024-10-14T12:22:42Z","arxiv":1,"extern":"1","year":"2019","article_number":"A134","volume":629,"keyword":["Space and Planetary Science","Astronomy and Astrophysics"],"oa_version":"Published Version","scopus_import":"1","type":"journal_article","publication":"Astronomy & Astrophysics","article_processing_charge":"No","title":"The impact of stars stripped in binaries on the integrated spectra of stellar populations","doi":"10.1051/0004-6361/201834525","main_file_link":[{"open_access":"1","url":"https://doi.org/10.1051/0004-6361/201834525"}],"publication_identifier":{"issn":["0004-6361"],"eissn":["1432-0746"]}},{"date_published":"2019-07-16T00:00:00Z","publisher":"EDP Sciences","_id":"13470","intvolume":" 627","abstract":[{"lang":"eng","text":"Context. Massive Wolf–Rayet (WR) stars dominate the radiative and mechanical energy budget of galaxies and probe a critical phase in the evolution of massive stars prior to core collapse. It is not known whether core He-burning WR stars (classical WR; cWR) form predominantly through wind stripping (w-WR) or binary stripping (b-WR). Whereas spectroscopy of WR binaries has so-far largely been avoided because of its complexity, our study focuses on the 44 WR binaries and binary candidates of the Large Magellanic Cloud (LMC; metallicity Z ≈ 0.5 Z⊙), which were identified on the basis of radial velocity variations, composite spectra, or high X-ray luminosities.\r\n\r\nAims. Relying on a diverse spectroscopic database, we aim to derive the physical and orbital parameters of our targets, confronting evolution models of evolved massive stars at subsolar metallicity and constraining the impact of binary interaction in forming these stars.\r\n\r\nMethods. Spectroscopy was performed using the Potsdam Wolf–Rayet (PoWR) code and cross-correlation techniques. Disentanglement was performed using the code Spectangular or the shift-and-add algorithm. Evolutionary status was interpreted using the Binary Population and Spectral Synthesis (BPASS) code, exploring binary interaction and chemically homogeneous evolution.\r\n\r\nResults. Among our sample, 28/44 objects show composite spectra and are analyzed as such. An additional five targets show periodically moving WR primaries but no detected companions (SB1); two (BAT99 99 and 112) are potential WR + compact-object candidates owing to their high X-ray luminosities. We cannot confirm the binary nature of the remaining 11 candidates. About two-thirds of the WN components in binaries are identified as cWR, and one-third as hydrogen-burning WR stars. We establish metallicity-dependent mass-loss recipes, which broadly agree with those recently derived for single WN stars, and in which so-called WN3/O3 stars are clear outliers. We estimate that 45 ± 30% of the cWR stars in our sample have interacted with a companion via mass transfer. However, only ≈12 ± 7% of the cWR stars in our sample naively appear to have formed purely owing to stripping via a companion (12% b-WR). Assuming that apparently single WR stars truly formed as single stars, this comprises ≈4% of the whole LMC WN population, which is about ten times less than expected. No obvious differences in the properties of single and binary WN stars, whose luminosities extend down to log L ≈ 5.2 [L⊙], are apparent. With the exception of a few systems (BAT99 19, 49, and 103), the equatorial rotational velocities of the OB-type companions are moderate (veq ≲ 250 km s−1) and challenge standard formalisms of angular-momentum accretion. For most objects, chemically homogeneous evolution can be rejected for the secondary, but not for the WR progenitor.\r\n\r\nConclusions. No obvious dichotomy in the locations of apparently single and binary WN stars on the Hertzsprung-Russell diagram is apparent. According to commonly used stellar evolution models (BPASS, Geneva), most apparently single WN stars could not have formed as single stars, implying that they were stripped by an undetected companion. Otherwise, it must follow that pre-WR mass-loss/mixing (e.g., during the red supergiant phase) are strongly underestimated in standard stellar evolution models."}],"date_created":"2023-08-03T10:14:09Z","quality_controlled":"1","language":[{"iso":"eng"}],"oa":1,"month":"07","article_type":"original","related_material":{"link":[{"url":"https://doi.org/10.1051/0004-6361/201935684e","relation":"erratum"}]},"day":"16","publication_status":"published","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","author":[{"first_name":"T.","last_name":"Shenar","full_name":"Shenar, T."},{"last_name":"Sablowski","first_name":"D. P.","full_name":"Sablowski, D. P."},{"last_name":"Hainich","first_name":"R.","full_name":"Hainich, R."},{"first_name":"H.","last_name":"Todt","full_name":"Todt, H."},{"first_name":"A. F. J.","last_name":"Moffat","full_name":"Moffat, A. F. J."},{"first_name":"L. M.","last_name":"Oskinova","full_name":"Oskinova, L. M."},{"last_name":"Ramachandran","first_name":"V.","full_name":"Ramachandran, V."},{"full_name":"Sana, H.","first_name":"H.","last_name":"Sana"},{"first_name":"A. A. C.","last_name":"Sander","full_name":"Sander, A. A. C."},{"first_name":"O.","last_name":"Schnurr","full_name":"Schnurr, O."},{"full_name":"St-Louis, N.","first_name":"N.","last_name":"St-Louis"},{"first_name":"D.","last_name":"Vanbeveren","full_name":"Vanbeveren, D."},{"last_name":"Götberg","first_name":"Ylva Louise Linsdotter","full_name":"Götberg, Ylva Louise Linsdotter","orcid":"0000-0002-6960-6911","id":"d0648d0c-0f64-11ee-a2e0-dd0faa2e4f7d"},{"full_name":"Hamann, W.-R.","first_name":"W.-R.","last_name":"Hamann"}],"citation":{"short":"T. Shenar, D.P. Sablowski, R. Hainich, H. Todt, A.F.J. Moffat, L.M. Oskinova, V. Ramachandran, H. Sana, A.A.C. Sander, O. Schnurr, N. St-Louis, D. Vanbeveren, Y.L.L. Götberg, W.-R. Hamann, Astronomy & Astrophysics 627 (2019).","ista":"Shenar T, Sablowski DP, Hainich R, Todt H, Moffat AFJ, Oskinova LM, Ramachandran V, Sana H, Sander AAC, Schnurr O, St-Louis N, Vanbeveren D, Götberg YLL, Hamann W-R. 2019. The Wolf–Rayet binaries of the nitrogen sequence in the Large Magellanic Cloud. Astronomy & Astrophysics. 627, A151.","ama":"Shenar T, Sablowski DP, Hainich R, et al. The Wolf–Rayet binaries of the nitrogen sequence in the Large Magellanic Cloud. Astronomy & Astrophysics. 2019;627. doi:10.1051/0004-6361/201935684","ieee":"T. Shenar et al., “The Wolf–Rayet binaries of the nitrogen sequence in the Large Magellanic Cloud,” Astronomy & Astrophysics, vol. 627. EDP Sciences, 2019.","mla":"Shenar, T., et al. “The Wolf–Rayet Binaries of the Nitrogen Sequence in the Large Magellanic Cloud.” Astronomy & Astrophysics, vol. 627, A151, EDP Sciences, 2019, doi:10.1051/0004-6361/201935684.","chicago":"Shenar, T., D. P. Sablowski, R. Hainich, H. Todt, A. F. J. Moffat, L. M. Oskinova, V. Ramachandran, et al. “The Wolf–Rayet Binaries of the Nitrogen Sequence in the Large Magellanic Cloud.” Astronomy & Astrophysics. EDP Sciences, 2019. https://doi.org/10.1051/0004-6361/201935684.","apa":"Shenar, T., Sablowski, D. P., Hainich, R., Todt, H., Moffat, A. F. J., Oskinova, L. M., … Hamann, W.-R. (2019). The Wolf–Rayet binaries of the nitrogen sequence in the Large Magellanic Cloud. Astronomy & Astrophysics. EDP Sciences. https://doi.org/10.1051/0004-6361/201935684"},"oa_version":"Published Version","keyword":["Space and Planetary Science","Astronomy and Astrophysics"],"scopus_import":"1","date_updated":"2023-08-09T12:29:58Z","status":"public","article_number":"A151","volume":627,"year":"2019","extern":"1","doi":"10.1051/0004-6361/201935684","publication_identifier":{"eissn":["1432-0746"],"issn":["0004-6361"]},"main_file_link":[{"url":"https://doi.org/10.1051/0004-6361/201935684","open_access":"1"}],"publication":"Astronomy & Astrophysics","type":"journal_article","title":"The Wolf–Rayet binaries of the nitrogen sequence in the Large Magellanic Cloud","article_processing_charge":"No"},{"oa":1,"article_type":"original","month":"04","author":[{"full_name":"Renzo, M.","last_name":"Renzo","first_name":"M."},{"last_name":"Zapartas","first_name":"E.","full_name":"Zapartas, E."},{"full_name":"de Mink, S. E.","first_name":"S. E.","last_name":"de Mink"},{"last_name":"Götberg","first_name":"Ylva Louise Linsdotter","full_name":"Götberg, Ylva Louise Linsdotter","orcid":"0000-0002-6960-6911","id":"d0648d0c-0f64-11ee-a2e0-dd0faa2e4f7d"},{"full_name":"Justham, S.","first_name":"S.","last_name":"Justham"},{"last_name":"Farmer","first_name":"R. J.","full_name":"Farmer, R. J."},{"full_name":"Izzard, R. G.","last_name":"Izzard","first_name":"R. G."},{"last_name":"Toonen","first_name":"S.","full_name":"Toonen, S."},{"full_name":"Sana, H.","first_name":"H.","last_name":"Sana"}],"citation":{"apa":"Renzo, M., Zapartas, E., de Mink, S. E., Götberg, Y. L. L., Justham, S., Farmer, R. J., … Sana, H. (2019). Massive runaway and walkaway stars. Astronomy & Astrophysics. EDP Sciences. https://doi.org/10.1051/0004-6361/201833297","short":"M. Renzo, E. Zapartas, S.E. de Mink, Y.L.L. Götberg, S. Justham, R.J. Farmer, R.G. Izzard, S. Toonen, H. Sana, Astronomy & Astrophysics 624 (2019).","ista":"Renzo M, Zapartas E, de Mink SE, Götberg YLL, Justham S, Farmer RJ, Izzard RG, Toonen S, Sana H. 2019. Massive runaway and walkaway stars. Astronomy & Astrophysics. 624, A66.","ieee":"M. Renzo et al., “Massive runaway and walkaway stars,” Astronomy & Astrophysics, vol. 624. EDP Sciences, 2019.","ama":"Renzo M, Zapartas E, de Mink SE, et al. Massive runaway and walkaway stars. Astronomy & Astrophysics. 2019;624. doi:10.1051/0004-6361/201833297","mla":"Renzo, M., et al. “Massive Runaway and Walkaway Stars.” Astronomy & Astrophysics, vol. 624, A66, EDP Sciences, 2019, doi:10.1051/0004-6361/201833297.","chicago":"Renzo, M., E. Zapartas, S. E. de Mink, Ylva Louise Linsdotter Götberg, S. Justham, R. J. Farmer, R. G. Izzard, S. Toonen, and H. Sana. “Massive Runaway and Walkaway Stars.” Astronomy & Astrophysics. EDP Sciences, 2019. https://doi.org/10.1051/0004-6361/201833297."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publication_status":"published","day":"11","_id":"13471","publisher":"EDP Sciences","date_published":"2019-04-11T00:00:00Z","abstract":[{"lang":"eng","text":"We perform an extensive numerical study of the evolution of massive binary systems to predict the peculiar velocities that stars obtain when their companion collapses and disrupts the system. Our aim is to (i) identify which predictions are robust against model uncertainties and assess their implications, (ii) investigate which physical processes leave a clear imprint and may therefore be constrained observationally, and (iii) provide a suite of publicly available model predictions to allow for the use of kinematic constraints from the Gaia mission. We find that 22+26−8% of all massive binary systems merge prior to the first core-collapse in the system. Of the remainder, 86+11−9% become unbound because of the core-collapse. Remarkably, this rarely produces runaway stars (observationally defined as stars with velocities above 30 km s−1). These are outnumbered by more than an order of magnitude by slower unbound companions, or “walkaway stars”. This is a robust outcome of our simulations and is due to the reversal of the mass ratio prior to the explosion and widening of the orbit, as we show analytically and numerically. For stars more massive than 15 M⊙, we estimate that 10+5−8% are walkaways and only 0.5+1.0−0.4% are runaways, nearly all of which have accreted mass from their companion. Our findings are consistent with earlier studies; however, the low runaway fraction we find is in tension with observed fractions of about 10%. Thus, astrometric data on presently single massive stars can potentially constrain the physics of massive binary evolution. Finally, we show that the high end of the mass distributions of runaway stars is very sensitive to the assumed black hole natal kicks, and we propose this as a potentially stringent test for the explosion mechanism. We also discuss companions remaining bound that can evolve into X-ray and gravitational wave sources."}],"intvolume":" 624","external_id":{"arxiv":["1804.09164"]},"date_created":"2023-08-03T10:14:18Z","language":[{"iso":"eng"}],"quality_controlled":"1","doi":"10.1051/0004-6361/201833297","main_file_link":[{"url":"https://doi.org/10.1051/0004-6361/201833297","open_access":"1"}],"publication_identifier":{"eissn":["1432-0746"],"issn":["0004-6361"]},"type":"journal_article","publication":"Astronomy & Astrophysics","article_processing_charge":"No","title":"Massive runaway and walkaway stars","keyword":["Space and Planetary Science","Astronomy and Astrophysics"],"oa_version":"Published Version","scopus_import":"1","status":"public","date_updated":"2023-08-09T12:26:08Z","arxiv":1,"year":"2019","extern":"1","volume":624,"article_number":"A66"},{"publisher":"EDP Sciences","_id":"13472","date_published":"2019-03-27T00:00:00Z","intvolume":" 623","abstract":[{"text":"Massive stars in binaries can give rise to extreme phenomena such as X-ray binaries and gravitational wave sources after one or both stars end their lives as core-collapse supernovae. Stars in close orbit around a stellar or compact companion are expected to explode as “stripped-envelope supernovae”, showing no (Type Ib/c) or little (Type IIb) signs of hydrogen in the spectra, because hydrogen-rich progenitors are too large to fit. The physical processes responsible for the stripping process and the fate of the companion are still very poorly understood. Aiming to find new clues, we investigate Cas A, which is a very young (∼340 yr) and near (∼3.4 kpc) remnant of a core-collapse supernova. Cas A has been subject to several searches for possible companions, all unsuccessfully. We present new measurements of the proper motions and photometry of stars in the vicinity based on deep HST ACS/WFC and WFC3-IR data. We identify stellar sources that are close enough in projection but using their proper motions we show that none are compatible with being at the location of center at the time of explosion, in agreement with earlier findings. Our photometric measurements allow us to place much deeper (order-of-magnitude) upper limits on the brightness of possible undetected companions. We systematically compare them with model predictions for a wide variety of scenarios. We can confidently rule out the presence of any stellar companion of any reasonable mass and age (main sequence, pre main sequence or stripped) ruling out what many considered to be likely evolutionary scenarios for Type IIb supernova (SN IIb). More exotic scenarios that predict the presence of a compact companion (white dwarf, neutron star or black hole) are still possible as well as scenarios where the progenitor of Cas A was single at the moment of explosion (either because it was truly single, or resulted from a binary that was disrupted, or from a binary merger). The presence of a compact companion would imply that Cas A is of interest to study exotic outcomes of binary evolution. The single-at-death solution would still require fine-tuning of the process that removed most of the envelope through a mass-loss mechanism yet to be identified. We discuss how future constraints from Gaia and even deeper photometric studies may help to place further constraints.","lang":"eng"}],"external_id":{"arxiv":["1711.00055"]},"date_created":"2023-08-03T10:14:27Z","language":[{"iso":"eng"}],"quality_controlled":"1","oa":1,"month":"03","article_type":"original","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","author":[{"first_name":"Wolfgang E.","last_name":"Kerzendorf","full_name":"Kerzendorf, Wolfgang E."},{"full_name":"Do, Tuan","first_name":"Tuan","last_name":"Do"},{"full_name":"de Mink, Selma E.","first_name":"Selma E.","last_name":"de Mink"},{"orcid":"0000-0002-6960-6911","full_name":"Götberg, Ylva Louise Linsdotter","id":"d0648d0c-0f64-11ee-a2e0-dd0faa2e4f7d","last_name":"Götberg","first_name":"Ylva Louise Linsdotter"},{"full_name":"Milisavljevic, Dan","first_name":"Dan","last_name":"Milisavljevic"},{"last_name":"Zapartas","first_name":"Emmanouil","full_name":"Zapartas, Emmanouil"},{"first_name":"Mathieu","last_name":"Renzo","full_name":"Renzo, Mathieu"},{"first_name":"Stephen","last_name":"Justham","full_name":"Justham, Stephen"},{"first_name":"Philipp","last_name":"Podsiadlowski","full_name":"Podsiadlowski, Philipp"},{"first_name":"Robert A.","last_name":"Fesen","full_name":"Fesen, Robert A."}],"citation":{"ama":"Kerzendorf WE, Do T, de Mink SE, et al. No surviving non-compact stellar companion to Cassiopeia A. Astronomy & Astrophysics. 2019;623. doi:10.1051/0004-6361/201732206","ieee":"W. E. Kerzendorf et al., “No surviving non-compact stellar companion to Cassiopeia A,” Astronomy & Astrophysics, vol. 623. EDP Sciences, 2019.","ista":"Kerzendorf WE, Do T, de Mink SE, Götberg YLL, Milisavljevic D, Zapartas E, Renzo M, Justham S, Podsiadlowski P, Fesen RA. 2019. No surviving non-compact stellar companion to Cassiopeia A. Astronomy & Astrophysics. 623, A34.","short":"W.E. Kerzendorf, T. Do, S.E. de Mink, Y.L.L. Götberg, D. Milisavljevic, E. Zapartas, M. Renzo, S. Justham, P. Podsiadlowski, R.A. Fesen, Astronomy & Astrophysics 623 (2019).","chicago":"Kerzendorf, Wolfgang E., Tuan Do, Selma E. de Mink, Ylva Louise Linsdotter Götberg, Dan Milisavljevic, Emmanouil Zapartas, Mathieu Renzo, Stephen Justham, Philipp Podsiadlowski, and Robert A. Fesen. “No Surviving Non-Compact Stellar Companion to Cassiopeia A.” Astronomy & Astrophysics. EDP Sciences, 2019. https://doi.org/10.1051/0004-6361/201732206.","mla":"Kerzendorf, Wolfgang E., et al. “No Surviving Non-Compact Stellar Companion to Cassiopeia A.” Astronomy & Astrophysics, vol. 623, A34, EDP Sciences, 2019, doi:10.1051/0004-6361/201732206.","apa":"Kerzendorf, W. E., Do, T., de Mink, S. E., Götberg, Y. L. L., Milisavljevic, D., Zapartas, E., … Fesen, R. A. (2019). No surviving non-compact stellar companion to Cassiopeia A. Astronomy & Astrophysics. EDP Sciences. https://doi.org/10.1051/0004-6361/201732206"},"day":"27","publication_status":"published","keyword":["Space and Planetary Science","Astronomy and Astrophysics"],"oa_version":"Published Version","scopus_import":"1","status":"public","date_updated":"2023-08-09T12:28:17Z","year":"2019","arxiv":1,"extern":"1","article_number":"A34","volume":623,"doi":"10.1051/0004-6361/201732206","main_file_link":[{"open_access":"1","url":"https://doi.org/10.1051/0004-6361/201732206"}],"publication_identifier":{"issn":["0004-6361"],"eissn":["1432-0746"]},"publication":"Astronomy & Astrophysics","type":"journal_article","article_processing_charge":"No","title":"No surviving non-compact stellar companion to Cassiopeia A"},{"doi":"10.1007/s00294-018-0879-8","project":[{"grant_number":"291734","call_identifier":"FP7","_id":"25681D80-B435-11E9-9278-68D0E5697425","name":"International IST Postdoc Fellowship Programme"}],"file":[{"creator":"dernst","file_name":"2019_CurrentGenetics_Nikolic.pdf","date_updated":"2020-07-14T12:44:47Z","date_created":"2019-02-06T07:50:58Z","relation":"main_file","file_size":776399,"access_level":"open_access","checksum":"6779708b0b632a1a6ed28c56f5161142","content_type":"application/pdf","file_id":"5930"}],"publication":"Current Genetics","type":"journal_article","article_processing_charge":"Yes (via OA deal)","title":"Autoregulation of bacterial gene expression: lessons from the MazEF toxin–antitoxin system","publist_id":"7785","oa_version":"Published Version","issue":"1","scopus_import":"1","status":"public","date_updated":"2025-04-15T06:50:19Z","isi":1,"year":"2019","volume":65,"oa":1,"has_accepted_license":"1","month":"02","ec_funded":1,"page":"133-138","file_date_updated":"2020-07-14T12:44:47Z","author":[{"orcid":"0000-0001-9068-6090","full_name":"Nikolic, Nela","id":"42D9CABC-F248-11E8-B48F-1D18A9856A87","last_name":"Nikolic","first_name":"Nela"}],"citation":{"apa":"Nikolic, N. (2019). Autoregulation of bacterial gene expression: lessons from the MazEF toxin–antitoxin system. Current Genetics. Springer. https://doi.org/10.1007/s00294-018-0879-8","short":"N. Nikolic, Current Genetics 65 (2019) 133–138.","ama":"Nikolic N. Autoregulation of bacterial gene expression: lessons from the MazEF toxin–antitoxin system. Current Genetics. 2019;65(1):133-138. doi:10.1007/s00294-018-0879-8","ieee":"N. Nikolic, “Autoregulation of bacterial gene expression: lessons from the MazEF toxin–antitoxin system,” Current Genetics, vol. 65, no. 1. Springer, pp. 133–138, 2019.","ista":"Nikolic N. 2019. Autoregulation of bacterial gene expression: lessons from the MazEF toxin–antitoxin system. Current Genetics. 65(1), 133–138.","mla":"Nikolic, Nela. “Autoregulation of Bacterial Gene Expression: Lessons from the MazEF Toxin–Antitoxin System.” Current Genetics, vol. 65, no. 1, Springer, 2019, pp. 133–38, doi:10.1007/s00294-018-0879-8.","chicago":"Nikolic, Nela. “Autoregulation of Bacterial Gene Expression: Lessons from the MazEF Toxin–Antitoxin System.” Current Genetics. Springer, 2019. https://doi.org/10.1007/s00294-018-0879-8."},"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","publication_status":"published","day":"01","ddc":["570"],"_id":"138","publisher":"Springer","date_published":"2019-02-01T00:00:00Z","abstract":[{"lang":"eng","text":"Autoregulation is the direct modulation of gene expression by the product of the corresponding gene. Autoregulation of bacterial gene expression has been mostly studied at the transcriptional level, when a protein acts as the cognate transcriptional repressor. A recent study investigating dynamics of the bacterial toxin–antitoxin MazEF system has shown how autoregulation at both the transcriptional and post-transcriptional levels affects the heterogeneity of Escherichia coli populations. Toxin–antitoxin systems hold a crucial but still elusive part in bacterial response to stress. This perspective highlights how these modules can also serve as a great model system for investigating basic concepts in gene regulation. However, as the genomic background and environmental conditions substantially influence toxin activation, it is important to study (auto)regulation of toxin–antitoxin systems in well-defined setups as well as in conditions that resemble the environmental niche."}],"intvolume":" 65","external_id":{"isi":["000456958800017"]},"tmp":{"image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"date_created":"2018-12-11T11:44:50Z","language":[{"iso":"eng"}],"quality_controlled":"1","department":[{"_id":"CaGu"}]}]