---
_id: '8097'
abstract:
- lang: eng
text: 'Antibiotics that interfere with translation, when combined, interact in diverse
and difficult-to-predict ways. Here, we explain these interactions by "translation
bottlenecks": points in the translation cycle where antibiotics block ribosomal
progression. To elucidate the underlying mechanisms of drug interactions between
translation inhibitors, we generate translation bottlenecks genetically using
inducible control of translation factors that regulate well-defined translation
cycle steps. These perturbations accurately mimic antibiotic action and drug interactions,
supporting that the interplay of different translation bottlenecks causes these
interactions. We further show that growth laws, combined with drug uptake and
binding kinetics, enable the direct prediction of a large fraction of observed
interactions, yet fail to predict suppression. However, varying two translation
bottlenecks simultaneously supports that dense traffic of ribosomes and competition
for translation factors account for the previously unexplained suppression. These
results highlight the importance of "continuous epistasis" in bacterial physiology.'
acknowledged_ssus:
- _id: LifeSc
article_processing_charge: No
author:
- first_name: Bor
full_name: Kavcic, Bor
id: 350F91D2-F248-11E8-B48F-1D18A9856A87
last_name: Kavcic
orcid: 0000-0001-6041-254X
citation:
ama: Kavcic B. Analysis scripts and research data for the paper “Mechanisms of drug
interactions between translation-inhibiting antibiotics.” 2020. doi:10.15479/AT:ISTA:8097
apa: Kavcic, B. (2020). Analysis scripts and research data for the paper “Mechanisms
of drug interactions between translation-inhibiting antibiotics.” Institute of
Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:8097
chicago: Kavcic, Bor. “Analysis Scripts and Research Data for the Paper ‘Mechanisms
of Drug Interactions between Translation-Inhibiting Antibiotics.’” Institute of
Science and Technology Austria, 2020. https://doi.org/10.15479/AT:ISTA:8097.
ieee: B. Kavcic, “Analysis scripts and research data for the paper ‘Mechanisms of
drug interactions between translation-inhibiting antibiotics.’” Institute of Science
and Technology Austria, 2020.
ista: Kavcic B. 2020. Analysis scripts and research data for the paper ‘Mechanisms
of drug interactions between translation-inhibiting antibiotics’, Institute of
Science and Technology Austria, 10.15479/AT:ISTA:8097.
mla: Kavcic, Bor. Analysis Scripts and Research Data for the Paper “Mechanisms
of Drug Interactions between Translation-Inhibiting Antibiotics.” Institute
of Science and Technology Austria, 2020, doi:10.15479/AT:ISTA:8097.
short: B. Kavcic, (2020).
contributor:
- contributor_type: research_group
first_name: Gašper
id: 3D494DCA-F248-11E8-B48F-1D18A9856A87
last_name: Tkačik
orcid: 0000-0002-6699-1455
- contributor_type: research_group
first_name: Tobias
id: 3E6DB97A-F248-11E8-B48F-1D18A9856A87
last_name: Bollenbach
date_created: 2020-07-06T20:40:19Z
date_published: 2020-07-15T00:00:00Z
date_updated: 2024-02-21T12:40:51Z
day: '15'
department:
- _id: GaTk
doi: 10.15479/AT:ISTA:8097
file:
- access_level: open_access
checksum: 5c321dbbb6d4b3c85da786fd3ebbdc98
content_type: application/zip
creator: bkavcic
date_created: 2020-07-06T20:38:27Z
date_updated: 2020-07-14T12:48:09Z
file_id: '8098'
file_name: natComm_2020_scripts.zip
file_size: 255770756
relation: main_file
file_date_updated: 2020-07-14T12:48:09Z
has_accepted_license: '1'
keyword:
- Escherichia coli
- antibiotic combinations
- translation
- growth laws
- drug interactions
- bacterial physiology
- translation inhibitors
month: '07'
oa: 1
oa_version: Published Version
publisher: Institute of Science and Technology Austria
status: public
title: Analysis scripts and research data for the paper "Mechanisms of drug interactions
between translation-inhibiting antibiotics"
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: research_data
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2020'
...
---
_id: '8142'
abstract:
- lang: eng
text: Cell production and differentiation for the acquisition of specific functions
are key features of living systems. The dynamic network of cellular microtubules
provides the necessary platform to accommodate processes associated with the transition
of cells through the individual phases of cytogenesis. Here, we show that the
plant hormone cytokinin fine‐tunes the activity of the microtubular cytoskeleton
during cell differentiation and counteracts microtubular rearrangements driven
by the hormone auxin. The endogenous upward gradient of cytokinin activity along
the longitudinal growth axis in Arabidopsis thaliana roots correlates with robust
rearrangements of the microtubule cytoskeleton in epidermal cells progressing
from the proliferative to the differentiation stage. Controlled increases in cytokinin
activity result in premature re‐organization of the microtubule network from transversal
to an oblique disposition in cells prior to their differentiation, whereas attenuated
hormone perception delays cytoskeleton conversion into a configuration typical
for differentiated cells. Intriguingly, cytokinin can interfere with microtubules
also in animal cells, such as leukocytes, suggesting that a cytokinin‐sensitive
control pathway for the microtubular cytoskeleton may be at least partially conserved
between plant and animal cells.
acknowledged_ssus:
- _id: Bio
- _id: LifeSc
acknowledgement: We thank Takashi Aoyama, David Alabadi, and Bert De Rybel for sharing
material, Jiří Friml, Maciek Adamowski, and Katerina Schwarzerová for inspiring
discussions, and Martine De Cock for help in preparing the manuscript. This research
was supported by the Scientific Service Units (SSUs) of IST Austria through resources
provided by the Bioimaging Facility (BIF), especially to Robert Hauschild; and the
Life Science Facility (LSF). J.C.M. is the recipient of a EMBO Long‐Term Fellowship
(ALTF number 710‐2016). This work was supported with MEYS CR, project no.CZ.02.1.01/0.0/0.0/16_019/0000738
to J.P., and by the Austrian Science Fund (FWF01_I1774S) to E.B.
article_number: e104238
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- 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: A
full_name: Abuzeineh, A
last_name: Abuzeineh
- first_name: Aglaja
full_name: Kopf, Aglaja
id: 31DAC7B6-F248-11E8-B48F-1D18A9856A87
last_name: Kopf
orcid: 0000-0002-2187-6656
- first_name: Alba
full_name: Juanes Garcia, Alba
id: 40F05888-F248-11E8-B48F-1D18A9856A87
last_name: Juanes Garcia
orcid: 0000-0002-1009-9652
- first_name: Krisztina
full_name: Ötvös, Krisztina
id: 29B901B0-F248-11E8-B48F-1D18A9856A87
last_name: Ötvös
orcid: 0000-0002-5503-4983
- first_name: J
full_name: Petrášek, J
last_name: Petrášek
- first_name: Michael K
full_name: Sixt, Michael K
id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87
last_name: Sixt
orcid: 0000-0002-6620-9179
- first_name: Eva
full_name: Benková, Eva
id: 38F4F166-F248-11E8-B48F-1D18A9856A87
last_name: Benková
orcid: 0000-0002-8510-9739
citation:
ama: Montesinos López JC, Abuzeineh A, Kopf A, et al. Phytohormone cytokinin guides
microtubule dynamics during cell progression from proliferative to differentiated
stage. The Embo Journal. 2020;39(17). doi:10.15252/embj.2019104238
apa: Montesinos López, J. C., Abuzeineh, A., Kopf, A., Juanes Garcia, A., Ötvös,
K., Petrášek, J., … Benková, E. (2020). Phytohormone cytokinin guides microtubule
dynamics during cell progression from proliferative to differentiated stage. The
Embo Journal. Embo Press. https://doi.org/10.15252/embj.2019104238
chicago: Montesinos López, Juan C, A Abuzeineh, Aglaja Kopf, Alba Juanes Garcia,
Krisztina Ötvös, J Petrášek, Michael K Sixt, and Eva Benková. “Phytohormone Cytokinin
Guides Microtubule Dynamics during Cell Progression from Proliferative to Differentiated
Stage.” The Embo Journal. Embo Press, 2020. https://doi.org/10.15252/embj.2019104238.
ieee: J. C. Montesinos López et al., “Phytohormone cytokinin guides microtubule
dynamics during cell progression from proliferative to differentiated stage,”
The Embo Journal, vol. 39, no. 17. Embo Press, 2020.
ista: Montesinos López JC, Abuzeineh A, Kopf A, Juanes Garcia A, Ötvös K, Petrášek
J, Sixt MK, Benková E. 2020. Phytohormone cytokinin guides microtubule dynamics
during cell progression from proliferative to differentiated stage. The Embo Journal.
39(17), e104238.
mla: Montesinos López, Juan C., et al. “Phytohormone Cytokinin Guides Microtubule
Dynamics during Cell Progression from Proliferative to Differentiated Stage.”
The Embo Journal, vol. 39, no. 17, e104238, Embo Press, 2020, doi:10.15252/embj.2019104238.
short: J.C. Montesinos López, A. Abuzeineh, A. Kopf, A. Juanes Garcia, K. Ötvös,
J. Petrášek, M.K. Sixt, E. Benková, The Embo Journal 39 (2020).
corr_author: '1'
date_created: 2020-07-21T09:08:38Z
date_published: 2020-09-01T00:00:00Z
date_updated: 2025-04-15T06:37:27Z
day: '01'
ddc:
- '580'
department:
- _id: MiSi
- _id: EvBe
doi: 10.15252/embj.2019104238
external_id:
isi:
- '000548311800001'
pmid:
- '32667089'
file:
- access_level: open_access
checksum: 43d2b36598708e6ab05c69074e191d57
content_type: application/pdf
creator: dernst
date_created: 2020-12-02T09:13:23Z
date_updated: 2020-12-02T09:13:23Z
file_id: '8827'
file_name: 2020_EMBO_Montesinos.pdf
file_size: 3497156
relation: main_file
success: 1
file_date_updated: 2020-12-02T09:13:23Z
has_accepted_license: '1'
intvolume: ' 39'
isi: 1
issue: '17'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 253E54C8-B435-11E9-9278-68D0E5697425
grant_number: ALTF710-2016
name: Molecular mechanism of auxindriven formative divisions delineating lateral
root organogenesis in plants
- _id: 2542D156-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: I 1774-B16
name: Hormone cross-talk drives nutrient dependent plant development
publication: The Embo Journal
publication_identifier:
eissn:
- 1460-2075
issn:
- 0261-4189
publication_status: published
publisher: Embo Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Phytohormone cytokinin guides microtubule dynamics during cell progression
from proliferative to differentiated stage
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: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 39
year: '2020'
...
---
_id: '8162'
abstract:
- lang: eng
text: In mammalian genomes, a subset of genes is regulated by genomic imprinting,
resulting in silencing of one parental allele. Imprinting is essential for cerebral
cortex development, but prevalence and functional impact in individual cells is
unclear. Here, we determined allelic expression in cortical cell types and established
a quantitative platform to interrogate imprinting in single cells. We created
cells with uniparental chromosome disomy (UPD) containing two copies of either
the maternal or the paternal chromosome; hence, imprinted genes will be 2-fold
overexpressed or not expressed. By genetic labeling of UPD, we determined cellular
phenotypes and transcriptional responses to deregulated imprinted gene expression
at unprecedented single-cell resolution. We discovered an unexpected degree of
cell-type specificity and a novel function of imprinting in the regulation of
cortical astrocyte survival. More generally, our results suggest functional relevance
of imprinted gene expression in glial astrocyte lineage and thus for generating
cortical cell-type diversity.
acknowledged_ssus:
- _id: Bio
- _id: LifeSc
- _id: PreCl
acknowledgement: We thank A. Heger (IST Austria Preclinical Facility), A. Sommer and
C. Czepe (VBCF GmbH, NGS Unit), and A. Seitz and P. Moll (Lexogen GmbH) for technical
support; G. Arque, S. Resch, C. Igler, C. Dotter, C. Yahya, Q. Hudson, and D. Andergassen
for initial experiments and/or assistance; D. Barlow, O. Bell, and all members of
the Hippenmeyer lab for discussion; and N. Barton, B. Vicoso, M. Sixt, and L. Luo
for comments on earlier versions of the manuscript. This research was supported
by the Scientific Service Units (SSU) of IST Austria through resources provided
by the Bioimaging Facilities (BIF), Life Science Facilities (LSF), and Preclinical
Facilities (PCF). A.H.H. is a recipient of a DOC fellowship (24812) of the Austrian
Academy of Sciences. N.A. received support from the FWF Firnberg-Programm (T 1031).
R.B. received support from the FWF Meitner-Programm (M 2416). This work was also
supported by IST Austria institutional funds; a NÖ Forschung und Bildung n[f+b]
life science call grant (C13-002) to S.H.; a program grant from the Human Frontiers
Science Program (RGP0053/2014) to S.H.; the People Programme (Marie Curie Actions)
of the European Union’s Seventh Framework Programme (FP7/2007-2013) under REA grant
agreement 618444 to S.H.; and the European Research Council (ERC) under the European
Union’s Horizon 2020 research and innovation program (grant agreement 725780 LinPro)
to S.H.
article_processing_charge: No
article_type: original
author:
- first_name: Susanne
full_name: Laukoter, Susanne
id: 2D6B7A9A-F248-11E8-B48F-1D18A9856A87
last_name: Laukoter
orcid: 0000-0002-7903-3010
- first_name: Florian
full_name: Pauler, Florian
id: 48EA0138-F248-11E8-B48F-1D18A9856A87
last_name: Pauler
orcid: 0000-0002-7462-0048
- first_name: Robert J
full_name: Beattie, Robert J
id: 2E26DF60-F248-11E8-B48F-1D18A9856A87
last_name: Beattie
orcid: 0000-0002-8483-8753
- first_name: Nicole
full_name: Amberg, Nicole
id: 4CD6AAC6-F248-11E8-B48F-1D18A9856A87
last_name: Amberg
orcid: 0000-0002-3183-8207
- first_name: Andi H
full_name: Hansen, Andi H
id: 38853E16-F248-11E8-B48F-1D18A9856A87
last_name: Hansen
- first_name: Carmen
full_name: Streicher, Carmen
id: 36BCB99C-F248-11E8-B48F-1D18A9856A87
last_name: Streicher
- first_name: Thomas
full_name: Penz, Thomas
last_name: Penz
- first_name: Christoph
full_name: Bock, Christoph
last_name: Bock
orcid: 0000-0001-6091-3088
- first_name: Simon
full_name: Hippenmeyer, Simon
id: 37B36620-F248-11E8-B48F-1D18A9856A87
last_name: Hippenmeyer
orcid: 0000-0003-2279-1061
citation:
ama: Laukoter S, Pauler F, Beattie RJ, et al. Cell-type specificity of genomic imprinting
in cerebral cortex. Neuron. 2020;107(6):1160-1179.e9. doi:10.1016/j.neuron.2020.06.031
apa: Laukoter, S., Pauler, F., Beattie, R. J., Amberg, N., Hansen, A. H., Streicher,
C., … Hippenmeyer, S. (2020). Cell-type specificity of genomic imprinting in cerebral
cortex. Neuron. Elsevier. https://doi.org/10.1016/j.neuron.2020.06.031
chicago: Laukoter, Susanne, Florian Pauler, Robert J Beattie, Nicole Amberg, Andi
H Hansen, Carmen Streicher, Thomas Penz, Christoph Bock, and Simon Hippenmeyer.
“Cell-Type Specificity of Genomic Imprinting in Cerebral Cortex.” Neuron.
Elsevier, 2020. https://doi.org/10.1016/j.neuron.2020.06.031.
ieee: S. Laukoter et al., “Cell-type specificity of genomic imprinting in
cerebral cortex,” Neuron, vol. 107, no. 6. Elsevier, p. 1160–1179.e9, 2020.
ista: Laukoter S, Pauler F, Beattie RJ, Amberg N, Hansen AH, Streicher C, Penz T,
Bock C, Hippenmeyer S. 2020. Cell-type specificity of genomic imprinting in cerebral
cortex. Neuron. 107(6), 1160–1179.e9.
mla: Laukoter, Susanne, et al. “Cell-Type Specificity of Genomic Imprinting in Cerebral
Cortex.” Neuron, vol. 107, no. 6, Elsevier, 2020, p. 1160–1179.e9, doi:10.1016/j.neuron.2020.06.031.
short: S. Laukoter, F. Pauler, R.J. Beattie, N. Amberg, A.H. Hansen, C. Streicher,
T. Penz, C. Bock, S. Hippenmeyer, Neuron 107 (2020) 1160–1179.e9.
corr_author: '1'
date_created: 2020-07-23T16:03:12Z
date_published: 2020-09-23T00:00:00Z
date_updated: 2025-06-12T07:19:46Z
day: '23'
ddc:
- '570'
department:
- _id: SiHi
doi: 10.1016/j.neuron.2020.06.031
ec_funded: 1
external_id:
isi:
- '000579698700006'
pmid:
- '32707083'
file:
- access_level: open_access
checksum: 7becdc16a6317304304631087ae7dd7f
content_type: application/pdf
creator: dernst
date_created: 2020-12-02T09:26:46Z
date_updated: 2020-12-02T09:26:46Z
file_id: '8828'
file_name: 2020_Neuron_Laukoter.pdf
file_size: 8911830
relation: main_file
success: 1
file_date_updated: 2020-12-02T09:26:46Z
has_accepted_license: '1'
intvolume: ' 107'
isi: 1
issue: '6'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
page: 1160-1179.e9
pmid: 1
project:
- _id: 2625A13E-B435-11E9-9278-68D0E5697425
grant_number: '24812'
name: Molecular mechanisms of radial neuronal migration
- _id: 268F8446-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: T01031
name: Role of Eed in neural stem cell lineage progression
- _id: 264E56E2-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: M02416
name: Molecular Mechanisms Regulating Gliogenesis in the Neocortex
- _id: 25D92700-B435-11E9-9278-68D0E5697425
grant_number: LS13-002
name: Mapping Cell-Type Specificity of the Genomic Imprintome in the Brain
- _id: 25D7962E-B435-11E9-9278-68D0E5697425
grant_number: RGP0053/2014
name: Quantitative Structure-Function Analysis of Cerebral Cortex Assembly at Clonal
Level
- _id: 25D61E48-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '618444'
name: Molecular Mechanisms of Cerebral Cortex Development
- _id: 260018B0-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '725780'
name: Principles of Neural Stem Cell Lineage Progression in Cerebral Cortex Development
publication: Neuron
publication_identifier:
issn:
- 0896-6273
publication_status: published
publisher: Elsevier
quality_controlled: '1'
related_material:
link:
- description: News on IST Website
relation: press_release
url: https://ist.ac.at/en/news/cells-react-differently-to-genomic-imprinting/
scopus_import: '1'
status: public
title: Cell-type specificity of genomic imprinting in cerebral cortex
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: 107
year: '2020'
...
---
_id: '8721'
abstract:
- lang: eng
text: Spontaneously arising channels that transport the phytohormone auxin provide
positional cues for self-organizing aspects of plant development such as flexible
vasculature regeneration or its patterning during leaf venation. The auxin canalization
hypothesis proposes a feedback between auxin signaling and transport as the underlying
mechanism, but molecular players await discovery. We identified part of the machinery
that routes auxin transport. The auxin-regulated receptor CAMEL (Canalization-related
Auxin-regulated Malectin-type RLK) together with CANAR (Canalization-related Receptor-like
kinase) interact with and phosphorylate PIN auxin transporters. camel and canar
mutants are impaired in PIN1 subcellular trafficking and auxin-mediated PIN polarization,
which macroscopically manifests as defects in leaf venation and vasculature regeneration
after wounding. The CAMEL-CANAR receptor complex is part of the auxin feedback
that coordinates polarization of individual cells during auxin canalization.
acknowledged_ssus:
- _id: Bio
- _id: LifeSc
acknowledgement: 'We acknowledge M. Glanc and Y. Zhang for providing entryclones;
Vienna Biocenter Core Facilities (VBCF) for recombinantprotein production and purification;
Vienna Biocenter Massspectrometry Facility, Bioimaging, and Life Science Facilities
at IST Austria and Proteomics Core Facility CEITEC for a great assistance.Funding:This
project received funding from the European Research Council (ERC) under the European
Union’s Horizon 2020 research and innovation program (grant agreement 742985) and
Austrian Science Fund (FWF): I 3630-B25 to J.F.and by grants from the Austrian Academy
of Science through the Gregor Mendel Institute (Y.B.) and the Austrian Agency for
International Cooperation in Education and Research (D.D.); the Netherlands Organization
for Scientific Research (NWO; VIDI-864.13.001) (W.S.); the Research Foundation–Flanders
(FWO;Odysseus II G0D0515N) and a European Research Council grant (ERC; StG TORPEDO;
714055) to B.D.R., B.Y., and E.M.; and the Hertha Firnberg Programme postdoctoral
fellowship (T-947) from the FWF Austrian Science Fund to E.S.-L.; J.H. is the recipient
of a DOC Fellowship of the Austrian Academy of Sciences at IST Austria.'
article_processing_charge: No
article_type: original
author:
- first_name: Jakub
full_name: Hajny, Jakub
id: 4800CC20-F248-11E8-B48F-1D18A9856A87
last_name: Hajny
orcid: 0000-0003-2140-7195
- first_name: Tomas
full_name: Prat, Tomas
id: 3DA3BFEE-F248-11E8-B48F-1D18A9856A87
last_name: Prat
- first_name: N
full_name: Rydza, N
last_name: Rydza
- first_name: Lesia
full_name: Rodriguez Solovey, Lesia
id: 3922B506-F248-11E8-B48F-1D18A9856A87
last_name: Rodriguez Solovey
orcid: 0000-0002-7244-7237
- first_name: Shutang
full_name: Tan, Shutang
id: 2DE75584-F248-11E8-B48F-1D18A9856A87
last_name: Tan
orcid: 0000-0002-0471-8285
- first_name: Inge
full_name: Verstraeten, Inge
id: 362BF7FE-F248-11E8-B48F-1D18A9856A87
last_name: Verstraeten
orcid: 0000-0001-7241-2328
- first_name: David
full_name: Domjan, David
id: C684CD7A-257E-11EA-9B6F-D8588B4F947F
last_name: Domjan
orcid: 0000-0003-2267-106X
- first_name: E
full_name: Mazur, E
last_name: Mazur
- first_name: E
full_name: Smakowska-Luzan, E
last_name: Smakowska-Luzan
- first_name: W
full_name: Smet, W
last_name: Smet
- first_name: E
full_name: Mor, E
last_name: Mor
- first_name: J
full_name: Nolf, J
last_name: Nolf
- first_name: B
full_name: Yang, B
last_name: Yang
- first_name: W
full_name: Grunewald, W
last_name: Grunewald
- first_name: Gergely
full_name: Molnar, Gergely
id: 34F1AF46-F248-11E8-B48F-1D18A9856A87
last_name: Molnar
- first_name: Y
full_name: Belkhadir, Y
last_name: Belkhadir
- first_name: B
full_name: De Rybel, B
last_name: De Rybel
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
citation:
ama: Hajny J, Prat T, Rydza N, et al. Receptor kinase module targets PIN-dependent
auxin transport during canalization. Science. 2020;370(6516):550-557. doi:10.1126/science.aba3178
apa: Hajny, J., Prat, T., Rydza, N., Rodriguez Solovey, L., Tan, S., Verstraeten,
I., … Friml, J. (2020). Receptor kinase module targets PIN-dependent auxin transport
during canalization. Science. American Association for the Advancement
of Science. https://doi.org/10.1126/science.aba3178
chicago: Hajny, Jakub, Tomas Prat, N Rydza, Lesia Rodriguez Solovey, Shutang Tan,
Inge Verstraeten, David Domjan, et al. “Receptor Kinase Module Targets PIN-Dependent
Auxin Transport during Canalization.” Science. American Association for
the Advancement of Science, 2020. https://doi.org/10.1126/science.aba3178.
ieee: J. Hajny et al., “Receptor kinase module targets PIN-dependent auxin
transport during canalization,” Science, vol. 370, no. 6516. American Association
for the Advancement of Science, pp. 550–557, 2020.
ista: Hajny J, Prat T, Rydza N, Rodriguez Solovey L, Tan S, Verstraeten I, Domjan
D, Mazur E, Smakowska-Luzan E, Smet W, Mor E, Nolf J, Yang B, Grunewald W, Molnar
G, Belkhadir Y, De Rybel B, Friml J. 2020. Receptor kinase module targets PIN-dependent
auxin transport during canalization. Science. 370(6516), 550–557.
mla: Hajny, Jakub, et al. “Receptor Kinase Module Targets PIN-Dependent Auxin Transport
during Canalization.” Science, vol. 370, no. 6516, American Association
for the Advancement of Science, 2020, pp. 550–57, doi:10.1126/science.aba3178.
short: J. Hajny, T. Prat, N. Rydza, L. Rodriguez Solovey, S. Tan, I. Verstraeten,
D. Domjan, E. Mazur, E. Smakowska-Luzan, W. Smet, E. Mor, J. Nolf, B. Yang, W.
Grunewald, G. Molnar, Y. Belkhadir, B. De Rybel, J. Friml, Science 370 (2020)
550–557.
date_created: 2020-11-02T10:04:46Z
date_published: 2020-10-30T00:00:00Z
date_updated: 2025-04-14T07:45:00Z
day: '30'
department:
- _id: JiFr
doi: 10.1126/science.aba3178
ec_funded: 1
external_id:
isi:
- '000583031800041'
pmid:
- '33122378'
intvolume: ' 370'
isi: 1
issue: '6516'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://europepmc.org/article/MED/33122378#free-full-text
month: '10'
oa: 1
oa_version: Published Version
page: 550-557
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: 26538374-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: I03630
name: Molecular mechanisms of endocytic cargo recognition in plants
- _id: 2699E3D2-B435-11E9-9278-68D0E5697425
grant_number: '25239'
name: Cell surface receptor complexes for PIN polarity and auxin-mediated development
publication: Science
publication_identifier:
eissn:
- 1095-9203
issn:
- 0036-8075
publication_status: published
publisher: American Association for the Advancement of Science
quality_controlled: '1'
related_material:
link:
- description: News on IST Homepage
relation: press_release
url: https://ist.ac.at/en/news/molecular-compass-for-cell-orientation/
scopus_import: '1'
status: public
title: Receptor kinase module targets PIN-dependent auxin transport during canalization
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 370
year: '2020'
...
---
_id: '8971'
abstract:
- lang: eng
text: The actin-related protein (Arp)2/3 complex nucleates branched actin filament
networks pivotal for cell migration, endocytosis and pathogen infection. Its activation
is tightly regulated and involves complex structural rearrangements and actin
filament binding, which are yet to be understood. Here, we report a 9.0 Å resolution
structure of the actin filament Arp2/3 complex branch junction in cells using
cryo-electron tomography and subtomogram averaging. This allows us to generate
an accurate model of the active Arp2/3 complex in the branch junction and its
interaction with actin filaments. Notably, our model reveals a previously undescribed
set of interactions of the Arp2/3 complex with the mother filament, significantly
different to the previous branch junction model. Our structure also indicates
a central role for the ArpC3 subunit in stabilizing the active conformation.
acknowledged_ssus:
- _id: ScienComp
- _id: LifeSc
- _id: Bio
- _id: EM-Fac
acknowledgement: "This research was supported by the Scientific Service Units (SSUs)
of IST Austria through resources provided by Scientific Computing (SciComp), the
Life Science Facility (LSF), the BioImaging Facility (BIF), and the Electron Microscopy
Facility (EMF). We also thank Dimitry Tegunov (MPI for Biophysical Chemistry) for
helpful discussions\r\nabout the M software, and Michael Sixt (IST Austria) and
Klemens Rottner (Technical University Braunschweig, HZI Braunschweig) for critical
reading of the manuscript. We also thank Gregory Voth (University of Chicago) for
providing us the MD-derived branch junction model for comparison. The authors acknowledge
support from IST Austria and from the Austrian Science Fund (FWF): M02495 to G.D.
and Austrian Science Fund (FWF): P33367 to F.K.M.S. "
article_number: '6437'
article_processing_charge: No
article_type: original
author:
- first_name: Florian
full_name: Fäßler, Florian
id: 404F5528-F248-11E8-B48F-1D18A9856A87
last_name: Fäßler
orcid: 0000-0001-7149-769X
- first_name: Georgi A
full_name: Dimchev, Georgi A
id: 38C393BE-F248-11E8-B48F-1D18A9856A87
last_name: Dimchev
orcid: 0000-0001-8370-6161
- first_name: Victor-Valentin
full_name: Hodirnau, Victor-Valentin
id: 3661B498-F248-11E8-B48F-1D18A9856A87
last_name: Hodirnau
orcid: 0000-0003-3904-947X
- first_name: William
full_name: Wan, William
last_name: Wan
- first_name: Florian KM
full_name: Schur, Florian KM
id: 48AD8942-F248-11E8-B48F-1D18A9856A87
last_name: Schur
orcid: 0000-0003-4790-8078
citation:
ama: Fäßler F, Dimchev GA, Hodirnau V-V, Wan W, Schur FK. Cryo-electron tomography
structure of Arp2/3 complex in cells reveals new insights into the branch junction.
Nature Communications. 2020;11. doi:10.1038/s41467-020-20286-x
apa: Fäßler, F., Dimchev, G. A., Hodirnau, V.-V., Wan, W., & Schur, F. K. (2020).
Cryo-electron tomography structure of Arp2/3 complex in cells reveals new insights
into the branch junction. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-020-20286-x
chicago: Fäßler, Florian, Georgi A Dimchev, Victor-Valentin Hodirnau, William Wan,
and Florian KM Schur. “Cryo-Electron Tomography Structure of Arp2/3 Complex in
Cells Reveals New Insights into the Branch Junction.” Nature Communications.
Springer Nature, 2020. https://doi.org/10.1038/s41467-020-20286-x.
ieee: F. Fäßler, G. A. Dimchev, V.-V. Hodirnau, W. Wan, and F. K. Schur, “Cryo-electron
tomography structure of Arp2/3 complex in cells reveals new insights into the
branch junction,” Nature Communications, vol. 11. Springer Nature, 2020.
ista: Fäßler F, Dimchev GA, Hodirnau V-V, Wan W, Schur FK. 2020. Cryo-electron tomography
structure of Arp2/3 complex in cells reveals new insights into the branch junction.
Nature Communications. 11, 6437.
mla: Fäßler, Florian, et al. “Cryo-Electron Tomography Structure of Arp2/3 Complex
in Cells Reveals New Insights into the Branch Junction.” Nature Communications,
vol. 11, 6437, Springer Nature, 2020, doi:10.1038/s41467-020-20286-x.
short: F. Fäßler, G.A. Dimchev, V.-V. Hodirnau, W. Wan, F.K. Schur, Nature Communications
11 (2020).
corr_author: '1'
date_created: 2020-12-23T08:25:45Z
date_published: 2020-12-22T00:00:00Z
date_updated: 2025-04-15T07:52:12Z
day: '22'
ddc:
- '570'
department:
- _id: FlSc
- _id: EM-Fac
doi: 10.1038/s41467-020-20286-x
external_id:
isi:
- '000603078000003'
file:
- access_level: open_access
checksum: 55d43ea0061cc4027ba45e966e1db8cc
content_type: application/pdf
creator: dernst
date_created: 2020-12-28T08:16:10Z
date_updated: 2020-12-28T08:16:10Z
file_id: '8975'
file_name: 2020_NatureComm_Faessler.pdf
file_size: 3958727
relation: main_file
success: 1
file_date_updated: 2020-12-28T08:16:10Z
has_accepted_license: '1'
intvolume: ' 11'
isi: 1
keyword:
- General Biochemistry
- Genetics and Molecular Biology
- General Physics and Astronomy
- General Chemistry
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
project:
- _id: 9B954C5C-BA93-11EA-9121-9846C619BF3A
grant_number: P33367
name: Structure and isoform diversity of the Arp2/3 complex
- _id: 2674F658-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: M02495
name: Protein structure and function in filopodia across scales
publication: Nature Communications
publication_identifier:
issn:
- 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
link:
- description: News on IST Homepage
relation: press_release
url: https://ist.ac.at/en/news/cutting-edge-technology-reveals-structures-within-cells/
scopus_import: '1'
status: public
title: Cryo-electron tomography structure of Arp2/3 complex in cells reveals new insights
into the branch junction
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: 11
year: '2020'
...
---
_id: '7343'
abstract:
- lang: eng
text: Coinfections with multiple pathogens can result in complex within‐host dynamics
affecting virulence and transmission. While multiple infections are intensively
studied in solitary hosts, it is so far unresolved how social host interactions
interfere with pathogen competition, and if this depends on coinfection diversity.
We studied how the collective disease defences of ants – their social immunity
– influence pathogen competition in coinfections of same or different fungal pathogen
species. Social immunity reduced virulence for all pathogen combinations, but
interfered with spore production only in different‐species coinfections. Here,
it decreased overall pathogen sporulation success while increasing co‐sporulation
on individual cadavers and maintaining a higher pathogen diversity at the community
level. Mathematical modelling revealed that host sanitary care alone can modulate
competitive outcomes between pathogens, giving advantage to fast‐germinating,
thus less grooming‐sensitive ones. Host social interactions can hence modulate
infection dynamics in coinfected group members, thereby altering pathogen communities
at the host level and population level.
acknowledged_ssus:
- _id: LifeSc
acknowledgement: "We thank Bernhardt Steinwender and Jorgen Eilenberg for the fungal
strains, Xavier Espadaler, Mireia Diaz, Christiane Wanke, Lumi Viljakainen and the
Social Immunity Team at IST Austria, for help with ant collection, and Wanda Gorecka
and Gertraud Stift of the IST Austria Life Science Facility for technical support.
We are thankful to Dieter Ebert for input at all stages of the project, Roger Mundry
for statistical advice, Hinrich Schulenburg, Paul Schmid-Hempel, Yuko\r\nUlrich
and Joachim Kurtz for project discussion, Bor Kavcic for advice on growth curves,
Marcus Roper for advice on modelling work and comments on the manuscript, as well
as Marjon de Vos, Weini Huang and the Social Immunity Team for comments on the manuscript.\r\nThis
study was funded by the German Research Foundation (DFG) within the Priority Programme
1399 Host-parasite Coevolution (CR 118/3 to S.C.) and the People Programme\r\n(Marie
Curie Actions) of the European Union’s Seventh Framework Programme (FP7/2007-2013)
under REA grant agreement no 291734 (ISTFELLOW to B.M.). "
article_processing_charge: Yes (via OA deal)
article_type: letter_note
author:
- first_name: Barbara
full_name: Milutinovic, Barbara
id: 2CDC32B8-F248-11E8-B48F-1D18A9856A87
last_name: Milutinovic
orcid: 0000-0002-8214-4758
- first_name: Miriam
full_name: Stock, Miriam
id: 42462816-F248-11E8-B48F-1D18A9856A87
last_name: Stock
- first_name: Anna V
full_name: Grasse, Anna V
id: 406F989C-F248-11E8-B48F-1D18A9856A87
last_name: Grasse
- first_name: Elisabeth
full_name: Naderlinger, Elisabeth
id: 31757262-F248-11E8-B48F-1D18A9856A87
last_name: Naderlinger
- first_name: Christian
full_name: Hilbe, Christian
id: 2FDF8F3C-F248-11E8-B48F-1D18A9856A87
last_name: Hilbe
orcid: 0000-0001-5116-955X
- first_name: Sylvia
full_name: Cremer, Sylvia
id: 2F64EC8C-F248-11E8-B48F-1D18A9856A87
last_name: Cremer
orcid: 0000-0002-2193-3868
citation:
ama: Milutinovic B, Stock M, Grasse AV, Naderlinger E, Hilbe C, Cremer S. Social
immunity modulates competition between coinfecting pathogens. Ecology Letters.
2020;23(3):565-574. doi:10.1111/ele.13458
apa: Milutinovic, B., Stock, M., Grasse, A. V., Naderlinger, E., Hilbe, C., &
Cremer, S. (2020). Social immunity modulates competition between coinfecting pathogens.
Ecology Letters. Wiley. https://doi.org/10.1111/ele.13458
chicago: Milutinovic, Barbara, Miriam Stock, Anna V Grasse, Elisabeth Naderlinger,
Christian Hilbe, and Sylvia Cremer. “Social Immunity Modulates Competition between
Coinfecting Pathogens.” Ecology Letters. Wiley, 2020. https://doi.org/10.1111/ele.13458.
ieee: B. Milutinovic, M. Stock, A. V. Grasse, E. Naderlinger, C. Hilbe, and S. Cremer,
“Social immunity modulates competition between coinfecting pathogens,” Ecology
Letters, vol. 23, no. 3. Wiley, pp. 565–574, 2020.
ista: Milutinovic B, Stock M, Grasse AV, Naderlinger E, Hilbe C, Cremer S. 2020.
Social immunity modulates competition between coinfecting pathogens. Ecology Letters.
23(3), 565–574.
mla: Milutinovic, Barbara, et al. “Social Immunity Modulates Competition between
Coinfecting Pathogens.” Ecology Letters, vol. 23, no. 3, Wiley, 2020, pp.
565–74, doi:10.1111/ele.13458.
short: B. Milutinovic, M. Stock, A.V. Grasse, E. Naderlinger, C. Hilbe, S. Cremer,
Ecology Letters 23 (2020) 565–574.
corr_author: '1'
date_created: 2020-01-20T13:32:12Z
date_published: 2020-03-01T00:00:00Z
date_updated: 2025-06-12T07:32:35Z
day: '01'
ddc:
- '570'
department:
- _id: SyCr
- _id: KrCh
doi: 10.1111/ele.13458
ec_funded: 1
external_id:
isi:
- '000507515900001'
pmid:
- '31950595'
file:
- access_level: open_access
checksum: 0cd8be386fa219db02845b7c3991ce04
content_type: application/pdf
creator: dernst
date_created: 2020-11-19T11:27:10Z
date_updated: 2020-11-19T11:27:10Z
file_id: '8776'
file_name: 2020_EcologyLetters_Milutinovic.pdf
file_size: 561749
relation: main_file
success: 1
file_date_updated: 2020-11-19T11:27:10Z
has_accepted_license: '1'
intvolume: ' 23'
isi: 1
issue: '3'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
page: 565-574
pmid: 1
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
- _id: 25DAF0B2-B435-11E9-9278-68D0E5697425
grant_number: CR-118/3-1
name: Host-Parasite Coevolution
publication: Ecology Letters
publication_identifier:
eissn:
- 1461-0248
issn:
- 1461-023X
publication_status: published
publisher: Wiley
quality_controlled: '1'
related_material:
link:
- description: News on IST Homepage
relation: press_release
url: https://ist.ac.at/en/news/social-ants-shapes-disease-outcome/
record:
- id: '13060'
relation: research_data
status: public
scopus_import: '1'
status: public
title: Social immunity modulates competition between coinfecting pathogens
tmp:
image: /images/cc_by_nc.png
legal_code_url: https://creativecommons.org/licenses/by-nc/4.0/legalcode
name: Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
short: CC BY-NC (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 23
year: '2020'
...
---
_id: '7490'
abstract:
- lang: eng
text: In plants, clathrin mediated endocytosis (CME) represents the major route
for cargo internalisation from the cell surface. It has been assumed to operate
in an evolutionary conserved manner as in yeast and animals. Here we report characterisation
of ultrastructure, dynamics and mechanisms of plant CME as allowed by our advancement
in electron microscopy and quantitative live imaging techniques. Arabidopsis CME
appears to follow the constant curvature model and the bona fide CME population
generates vesicles of a predominantly hexagonal-basket type; larger and with faster
kinetics than in other models. Contrary to the existing paradigm, actin is dispensable
for CME events at the plasma membrane but plays a unique role in collecting endocytic
vesicles, sorting of internalised cargos and directional endosome movement that
itself actively promote CME events. Internalized vesicles display a strongly delayed
and sequential uncoating. These unique features highlight the independent evolution
of the plant CME mechanism during the autonomous rise of multicellularity in eukaryotes.
acknowledged_ssus:
- _id: LifeSc
- _id: Bio
- _id: EM-Fac
article_number: e52067
article_processing_charge: No
article_type: original
author:
- first_name: Madhumitha
full_name: Narasimhan, Madhumitha
id: 44BF24D0-F248-11E8-B48F-1D18A9856A87
last_name: Narasimhan
orcid: 0000-0002-8600-0671
- 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: Roshan
full_name: Prizak, Roshan
id: 4456104E-F248-11E8-B48F-1D18A9856A87
last_name: Prizak
- first_name: Walter
full_name: Kaufmann, Walter
id: 3F99E422-F248-11E8-B48F-1D18A9856A87
last_name: Kaufmann
orcid: 0000-0001-9735-5315
- first_name: Shutang
full_name: Tan, Shutang
id: 2DE75584-F248-11E8-B48F-1D18A9856A87
last_name: Tan
orcid: 0000-0002-0471-8285
- first_name: Barbara E
full_name: Casillas Perez, Barbara E
id: 351ED2AA-F248-11E8-B48F-1D18A9856A87
last_name: Casillas Perez
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
citation:
ama: Narasimhan M, Johnson AJ, Prizak R, et al. Evolutionarily unique mechanistic
framework of clathrin-mediated endocytosis in plants. eLife. 2020;9. doi:10.7554/eLife.52067
apa: Narasimhan, M., Johnson, A. J., Prizak, R., Kaufmann, W., Tan, S., Casillas
Perez, B. E., & Friml, J. (2020). Evolutionarily unique mechanistic framework
of clathrin-mediated endocytosis in plants. ELife. eLife Sciences Publications.
https://doi.org/10.7554/eLife.52067
chicago: Narasimhan, Madhumitha, Alexander J Johnson, Roshan Prizak, Walter Kaufmann,
Shutang Tan, Barbara E Casillas Perez, and Jiří Friml. “Evolutionarily Unique
Mechanistic Framework of Clathrin-Mediated Endocytosis in Plants.” ELife.
eLife Sciences Publications, 2020. https://doi.org/10.7554/eLife.52067.
ieee: M. Narasimhan et al., “Evolutionarily unique mechanistic framework
of clathrin-mediated endocytosis in plants,” eLife, vol. 9. eLife Sciences
Publications, 2020.
ista: Narasimhan M, Johnson AJ, Prizak R, Kaufmann W, Tan S, Casillas Perez BE,
Friml J. 2020. Evolutionarily unique mechanistic framework of clathrin-mediated
endocytosis in plants. eLife. 9, e52067.
mla: Narasimhan, Madhumitha, et al. “Evolutionarily Unique Mechanistic Framework
of Clathrin-Mediated Endocytosis in Plants.” ELife, vol. 9, e52067, eLife
Sciences Publications, 2020, doi:10.7554/eLife.52067.
short: M. Narasimhan, A.J. Johnson, R. Prizak, W. Kaufmann, S. Tan, B.E. Casillas
Perez, J. Friml, ELife 9 (2020).
date_created: 2020-02-16T23:00:50Z
date_published: 2020-01-23T00:00:00Z
date_updated: 2025-04-14T07:45:03Z
day: '23'
ddc:
- '570'
- '580'
department:
- _id: JiFr
- _id: GaTk
- _id: EM-Fac
- _id: SyCr
doi: 10.7554/eLife.52067
ec_funded: 1
external_id:
isi:
- '000514104100001'
pmid:
- '31971511'
file:
- access_level: open_access
checksum: 2052daa4be5019534f3a42f200a09f32
content_type: application/pdf
creator: dernst
date_created: 2020-02-18T07:21:16Z
date_updated: 2020-07-14T12:47:59Z
file_id: '7494'
file_name: 2020_eLife_Narasimhan.pdf
file_size: 7247468
relation: main_file
file_date_updated: 2020-07-14T12:47:59Z
has_accepted_license: '1'
intvolume: ' 9'
isi: 1
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
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: 26538374-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: I03630
name: Molecular mechanisms of endocytic cargo recognition in plants
publication: eLife
publication_identifier:
eissn:
- 2050-084X
publication_status: published
publisher: eLife Sciences Publications
quality_controlled: '1'
scopus_import: '1'
status: public
title: Evolutionarily unique mechanistic framework of clathrin-mediated endocytosis
in plants
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: 9
year: '2020'
...
---
_id: '7600'
abstract:
- lang: eng
text: Directional intercellular transport of the phytohormone auxin mediated by
PIN FORMED (PIN) efflux carriers plays essential roles in both coordinating patterning
processes and integrating multiple external cues by rapidly redirecting auxin
fluxes. Multilevel regulations of PIN activity under internal and external cues
are complicated; however, the underlying molecular mechanism remains elusive.
Here we demonstrate that 3’-Phosphoinositide-Dependent Protein Kinase1 (PDK1),
which is conserved in plants and mammals, functions as a molecular hub integrating
the upstream lipid signalling and the downstream substrate activity through phosphorylation.
Genetic analysis uncovers that loss-of-function Arabidopsis mutant pdk1.1 pdk1.2
exhibits a plethora of abnormalities in organogenesis and growth, due to the defective
PIN-dependent auxin transport. Further cellular and biochemical analyses reveal
that PDK1 phosphorylates D6 Protein Kinase to facilitate its activity towards
PIN proteins. Our studies establish a lipid-dependent phosphorylation cascade
connecting membrane composition-based cellular signalling with plant growth and
patterning by regulating morphogenetic auxin fluxes.
acknowledged_ssus:
- _id: Bio
- _id: LifeSc
article_processing_charge: No
article_type: original
author:
- first_name: Shutang
full_name: Tan, Shutang
id: 2DE75584-F248-11E8-B48F-1D18A9856A87
last_name: Tan
orcid: 0000-0002-0471-8285
- first_name: Xixi
full_name: Zhang, Xixi
id: 61A66458-47E9-11EA-85BA-8AEAAF14E49A
last_name: Zhang
orcid: 0000-0001-7048-4627
- first_name: Wei
full_name: Kong, Wei
last_name: Kong
- first_name: Xiao-Li
full_name: Yang, Xiao-Li
last_name: Yang
- first_name: Gergely
full_name: Molnar, Gergely
id: 34F1AF46-F248-11E8-B48F-1D18A9856A87
last_name: Molnar
- first_name: Zuzana
full_name: Vondráková, Zuzana
last_name: Vondráková
- first_name: Roberta
full_name: Filepová, Roberta
last_name: Filepová
- first_name: Jan
full_name: Petrášek, Jan
last_name: Petrášek
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
- first_name: Hong-Wei
full_name: Xue, Hong-Wei
last_name: Xue
citation:
ama: Tan S, Zhang X, Kong W, et al. The lipid code-dependent phosphoswitch PDK1–D6PK
activates PIN-mediated auxin efflux in Arabidopsis. Nature Plants. 2020;6:556-569.
doi:10.1038/s41477-020-0648-9
apa: Tan, S., Zhang, X., Kong, W., Yang, X.-L., Molnar, G., Vondráková, Z., … Xue,
H.-W. (2020). The lipid code-dependent phosphoswitch PDK1–D6PK activates PIN-mediated
auxin efflux in Arabidopsis. Nature Plants. Springer Nature. https://doi.org/10.1038/s41477-020-0648-9
chicago: Tan, Shutang, Xixi Zhang, Wei Kong, Xiao-Li Yang, Gergely Molnar, Zuzana
Vondráková, Roberta Filepová, Jan Petrášek, Jiří Friml, and Hong-Wei Xue. “The
Lipid Code-Dependent Phosphoswitch PDK1–D6PK Activates PIN-Mediated Auxin Efflux
in Arabidopsis.” Nature Plants. Springer Nature, 2020. https://doi.org/10.1038/s41477-020-0648-9.
ieee: S. Tan et al., “The lipid code-dependent phosphoswitch PDK1–D6PK activates
PIN-mediated auxin efflux in Arabidopsis,” Nature Plants, vol. 6. Springer
Nature, pp. 556–569, 2020.
ista: Tan S, Zhang X, Kong W, Yang X-L, Molnar G, Vondráková Z, Filepová R, Petrášek
J, Friml J, Xue H-W. 2020. The lipid code-dependent phosphoswitch PDK1–D6PK activates
PIN-mediated auxin efflux in Arabidopsis. Nature Plants. 6, 556–569.
mla: Tan, Shutang, et al. “The Lipid Code-Dependent Phosphoswitch PDK1–D6PK Activates
PIN-Mediated Auxin Efflux in Arabidopsis.” Nature Plants, vol. 6, Springer
Nature, 2020, pp. 556–69, doi:10.1038/s41477-020-0648-9.
short: S. Tan, X. Zhang, W. Kong, X.-L. Yang, G. Molnar, Z. Vondráková, R. Filepová,
J. Petrášek, J. Friml, H.-W. Xue, Nature Plants 6 (2020) 556–569.
date_created: 2020-03-21T16:34:16Z
date_published: 2020-05-01T00:00:00Z
date_updated: 2026-04-02T11:50:26Z
day: '01'
department:
- _id: JiFr
doi: 10.1038/s41477-020-0648-9
ec_funded: 1
external_id:
isi:
- '000531787500006'
pmid:
- '32393881'
intvolume: ' 6'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1101/755504
month: '05'
oa: 1
oa_version: Preprint
page: 556-569
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: 256FEF10-B435-11E9-9278-68D0E5697425
grant_number: 723-2015
name: Molecular Mechanism underlying Salicylic Acid Regulation of Endocytic Trafficking
in Arabidopsis
publication: Nature Plants
publication_identifier:
eissn:
- 2055-0278
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
link:
- relation: erratum
url: https://doi.org/10.1038/s41477-020-0719-y
scopus_import: '1'
status: public
title: The lipid code-dependent phosphoswitch PDK1–D6PK activates PIN-mediated auxin
efflux in Arabidopsis
type: journal_article
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 6
year: '2020'
...
---
_id: '7805'
abstract:
- lang: eng
text: Plants as non-mobile organisms constantly integrate varying environmental
signals to flexibly adapt their growth and development. Local fluctuations in
water and nutrient availability, sudden changes in temperature or other abiotic
and biotic stresses can trigger changes in the growth of plant organs. Multiple
mutually interconnected hormonal signaling cascades act as essential endogenous
translators of these exogenous signals in the adaptive responses of plants. Although
the molecular backbones of hormone transduction pathways have been identified,
the mechanisms underlying their interactions are largely unknown. Here, using
genome wide transcriptome profiling we identify an auxin and cytokinin cross-talk
component; SYNERGISTIC ON AUXIN AND CYTOKININ 1 (SYAC1), whose expression in roots
is strictly dependent on both of these hormonal pathways. We show that SYAC1 is
a regulator of secretory pathway, whose enhanced activity interferes with deposition
of cell wall components and can fine-tune organ growth and sensitivity to soil
pathogens.
acknowledged_ssus:
- _id: Bio
- _id: LifeSc
acknowledgement: We thank Daria Siekhaus, Jiri Friml and Alexander Johnson for critical
reading of the manuscript, Peter Pimpl, Christian Luschnig and Liwen Jiang for sharing
published material, Lesia Rodriguez Solovey for technical assistance. This work
was supported by the Austrian Science Fund (FWF01_I1774S) to A.H., K.Ö., and E.B.,
the German Research Foundation (DFG; He3424/6-1 to I.H.), by the People Programme
(Marie Curie Actions) of the European Union’s Seventh Framework Programme (FP7/2007-2013)
under REA grant agreement n° [291734] (to N.C.), by the EU in the framework of the
Marie-Curie FP7 COFUND People Programme through the award of an AgreenSkills+ fellowship
No. 609398 (to J.S.) and by the Scientific Service Units of IST-Austria through
resources provided by the Bioimaging Facility, the Life Science Facility. The IJPB
benefits from the support of Saclay Plant Sciences-SPS (ANR-17-EUR-0007).
article_number: '2170'
article_processing_charge: No
article_type: original
author:
- first_name: Andrej
full_name: Hurny, Andrej
id: 4DC4AF46-F248-11E8-B48F-1D18A9856A87
last_name: Hurny
orcid: 0000-0003-3638-1426
- first_name: Candela
full_name: Cuesta, Candela
id: 33A3C818-F248-11E8-B48F-1D18A9856A87
last_name: Cuesta
orcid: 0000-0003-1923-2410
- first_name: Nicola
full_name: Cavallari, Nicola
id: 457160E6-F248-11E8-B48F-1D18A9856A87
last_name: Cavallari
- first_name: Krisztina
full_name: Ötvös, Krisztina
id: 29B901B0-F248-11E8-B48F-1D18A9856A87
last_name: Ötvös
orcid: 0000-0002-5503-4983
- first_name: Jerome
full_name: Duclercq, Jerome
last_name: Duclercq
- first_name: Ladislav
full_name: Dokládal, Ladislav
last_name: Dokládal
- 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: Marçal
full_name: Gallemi, Marçal
id: 460C6802-F248-11E8-B48F-1D18A9856A87
last_name: Gallemi
orcid: 0000-0003-4675-6893
- first_name: Hana
full_name: Semeradova, Hana
id: 42FE702E-F248-11E8-B48F-1D18A9856A87
last_name: Semeradova
- first_name: Thomas
full_name: Rauter, Thomas
id: A0385D1A-9376-11EA-A47D-9862C5E3AB22
last_name: Rauter
- first_name: Irene
full_name: Stenzel, Irene
last_name: Stenzel
- first_name: Geert
full_name: Persiau, Geert
last_name: Persiau
- first_name: Freia
full_name: Benade, Freia
last_name: Benade
- first_name: Rishikesh
full_name: Bhalearo, Rishikesh
last_name: Bhalearo
- first_name: Eva
full_name: Sýkorová, Eva
last_name: Sýkorová
- first_name: András
full_name: Gorzsás, András
last_name: Gorzsás
- first_name: Julien
full_name: Sechet, Julien
last_name: Sechet
- first_name: Gregory
full_name: Mouille, Gregory
last_name: Mouille
- first_name: Ingo
full_name: Heilmann, Ingo
last_name: Heilmann
- first_name: Geert
full_name: De Jaeger, Geert
last_name: De Jaeger
- first_name: Jutta
full_name: Ludwig-Müller, Jutta
last_name: Ludwig-Müller
- first_name: Eva
full_name: Benková, Eva
id: 38F4F166-F248-11E8-B48F-1D18A9856A87
last_name: Benková
orcid: 0000-0002-8510-9739
citation:
ama: Hurny A, Cuesta C, Cavallari N, et al. Synergistic on Auxin and Cytokinin 1
positively regulates growth and attenuates soil pathogen resistance. Nature
Communications. 2020;11. doi:10.1038/s41467-020-15895-5
apa: Hurny, A., Cuesta, C., Cavallari, N., Ötvös, K., Duclercq, J., Dokládal, L.,
… Benková, E. (2020). Synergistic on Auxin and Cytokinin 1 positively regulates
growth and attenuates soil pathogen resistance. Nature Communications.
Springer Nature. https://doi.org/10.1038/s41467-020-15895-5
chicago: Hurny, Andrej, Candela Cuesta, Nicola Cavallari, Krisztina Ötvös, Jerome
Duclercq, Ladislav Dokládal, Juan C Montesinos López, et al. “Synergistic on Auxin
and Cytokinin 1 Positively Regulates Growth and Attenuates Soil Pathogen Resistance.”
Nature Communications. Springer Nature, 2020. https://doi.org/10.1038/s41467-020-15895-5.
ieee: A. Hurny et al., “Synergistic on Auxin and Cytokinin 1 positively regulates
growth and attenuates soil pathogen resistance,” Nature Communications,
vol. 11. Springer Nature, 2020.
ista: Hurny A, Cuesta C, Cavallari N, Ötvös K, Duclercq J, Dokládal L, Montesinos
López JC, Gallemi M, Semerádová H, Rauter T, Stenzel I, Persiau G, Benade F, Bhalearo
R, Sýkorová E, Gorzsás A, Sechet J, Mouille G, Heilmann I, De Jaeger G, Ludwig-Müller
J, Benková E. 2020. Synergistic on Auxin and Cytokinin 1 positively regulates
growth and attenuates soil pathogen resistance. Nature Communications. 11, 2170.
mla: Hurny, Andrej, et al. “Synergistic on Auxin and Cytokinin 1 Positively Regulates
Growth and Attenuates Soil Pathogen Resistance.” Nature Communications,
vol. 11, 2170, Springer Nature, 2020, doi:10.1038/s41467-020-15895-5.
short: A. Hurny, C. Cuesta, N. Cavallari, K. Ötvös, J. Duclercq, L. Dokládal, J.C.
Montesinos López, M. Gallemi, H. Semerádová, T. Rauter, I. Stenzel, G. Persiau,
F. Benade, R. Bhalearo, E. Sýkorová, A. Gorzsás, J. Sechet, G. Mouille, I. Heilmann,
G. De Jaeger, J. Ludwig-Müller, E. Benková, Nature Communications 11 (2020).
corr_author: '1'
date_created: 2020-05-10T22:00:48Z
date_published: 2020-05-01T00:00:00Z
date_updated: 2026-04-02T14:32:53Z
day: '01'
ddc:
- '570'
department:
- _id: EvBe
doi: 10.1038/s41467-020-15895-5
ec_funded: 1
external_id:
isi:
- '000531425900012'
pmid:
- '32358503'
file:
- access_level: open_access
checksum: 2cba327c9e9416d75cb96be54b0fb441
content_type: application/pdf
creator: dernst
date_created: 2020-10-06T07:47:53Z
date_updated: 2020-10-06T07:47:53Z
file_id: '8614'
file_name: 2020_NatureComm_Hurny.pdf
file_size: 4743576
relation: main_file
success: 1
file_date_updated: 2020-10-06T07:47:53Z
has_accepted_license: '1'
intvolume: ' 11'
isi: 1
language:
- iso: eng
month: '05'
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
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: Nature Communications
publication_identifier:
eissn:
- 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Synergistic on Auxin and Cytokinin 1 positively regulates growth and attenuates
soil pathogen resistance
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: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 11
year: '2020'
...
---
_id: '8737'
abstract:
- lang: eng
text: Mitochondrial complex I couples NADH:ubiquinone oxidoreduction to proton pumping
by an unknown mechanism. Here, we present cryo-electron microscopy structures
of ovine complex I in five different conditions, including turnover, at resolutions
up to 2.3 to 2.5 angstroms. Resolved water molecules allowed us to experimentally
define the proton translocation pathways. Quinone binds at three positions along
the quinone cavity, as does the inhibitor rotenone that also binds within subunit
ND4. Dramatic conformational changes around the quinone cavity couple the redox
reaction to proton translocation during open-to-closed state transitions of the
enzyme. In the induced deactive state, the open conformation is arrested by the
ND6 subunit. We propose a detailed molecular coupling mechanism of complex I,
which is an unexpected combination of conformational changes and electrostatic
interactions.
acknowledged_ssus:
- _id: LifeSc
- _id: EM-Fac
acknowledgement: We thank J. Novacek (CEITEC Brno) and V.-V. Hodirnau (IST Austria)
for their help with collecting cryo-EM datasets. We thank the IST Life Science and
Electron Microscopy Facilities for providing equipment. This work has been supported
by iNEXT,project number 653706, funded by the Horizon 2020 program of the European
Union. This article reflects only the authors’view,and the European Commission is
not responsible for any use that may be made of the information it contains. CIISB
research infrastructure project LM2015043 funded by MEYS CR is gratefully acknowledged
for the financial support of the measurements at the CF Cryo-electron Microscopy
and Tomography CEITEC MU.This project has received funding from the European Union’s
Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant
Agreement no. 665385
article_number: eabc4209
article_processing_charge: No
article_type: original
author:
- first_name: Domen
full_name: Kampjut, Domen
id: 37233050-F248-11E8-B48F-1D18A9856A87
last_name: Kampjut
orcid: 0000-0002-6018-3422
- first_name: Leonid A
full_name: Sazanov, Leonid A
id: 338D39FE-F248-11E8-B48F-1D18A9856A87
last_name: Sazanov
orcid: 0000-0002-0977-7989
citation:
ama: Kampjut D, Sazanov LA. The coupling mechanism of mammalian respiratory complex
I. Science. 2020;370(6516). doi:10.1126/science.abc4209
apa: Kampjut, D., & Sazanov, L. A. (2020). The coupling mechanism of mammalian
respiratory complex I. Science. American Association for the Advancement
of Science. https://doi.org/10.1126/science.abc4209
chicago: Kampjut, Domen, and Leonid A Sazanov. “The Coupling Mechanism of Mammalian
Respiratory Complex I.” Science. American Association for the Advancement
of Science, 2020. https://doi.org/10.1126/science.abc4209.
ieee: D. Kampjut and L. A. Sazanov, “The coupling mechanism of mammalian respiratory
complex I,” Science, vol. 370, no. 6516. American Association for the Advancement
of Science, 2020.
ista: Kampjut D, Sazanov LA. 2020. The coupling mechanism of mammalian respiratory
complex I. Science. 370(6516), eabc4209.
mla: Kampjut, Domen, and Leonid A. Sazanov. “The Coupling Mechanism of Mammalian
Respiratory Complex I.” Science, vol. 370, no. 6516, eabc4209, American
Association for the Advancement of Science, 2020, doi:10.1126/science.abc4209.
short: D. Kampjut, L.A. Sazanov, Science 370 (2020).
date_created: 2020-11-08T23:01:23Z
date_published: 2020-10-30T00:00:00Z
date_updated: 2026-04-02T14:32:34Z
day: '30'
ddc:
- '572'
department:
- _id: LeSa
doi: 10.1126/science.abc4209
ec_funded: 1
external_id:
isi:
- '000583031800004'
pmid:
- '32972993'
file:
- access_level: open_access
checksum: 658ba90979ca9528a2efdfac8547047a
content_type: application/pdf
creator: lsazanov
date_created: 2020-11-26T18:47:58Z
date_updated: 2020-11-26T18:47:58Z
file_id: '8820'
file_name: Full_manuscript_with_SI_opt_red.pdf
file_size: 7618987
relation: main_file
success: 1
file_date_updated: 2020-11-26T18:47:58Z
has_accepted_license: '1'
intvolume: ' 370'
isi: 1
issue: '6516'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Submitted Version
pmid: 1
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
publication: Science
publication_identifier:
eissn:
- 1095-9203
publication_status: published
publisher: American Association for the Advancement of Science
quality_controlled: '1'
scopus_import: '1'
status: public
title: The coupling mechanism of mammalian respiratory complex I
type: journal_article
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 370
year: '2020'
...
---
_id: '8336'
abstract:
- lang: eng
text: Plant hormone cytokinins are perceived by a subfamily of sensor histidine
kinases (HKs), which via a two-component phosphorelay cascade activate transcriptional
responses in the nucleus. Subcellular localization of the receptors proposed the
endoplasmic reticulum (ER) membrane as a principal cytokinin perception site,
while study of cytokinin transport pointed to the plasma membrane (PM)-mediated
cytokinin signalling. Here, by detailed monitoring of subcellular localizations
of the fluorescently labelled natural cytokinin probe and the receptor ARABIDOPSIS
HISTIDINE KINASE 4 (CRE1/AHK4) fused to GFP reporter, we show that pools of the
ER-located cytokinin receptors can enter the secretory pathway and reach the PM
in cells of the root apical meristem, and the cell plate of dividing meristematic
cells. Brefeldin A (BFA) experiments revealed vesicular recycling of the receptor
and its accumulation in BFA compartments. We provide a revised view on cytokinin
signalling and the possibility of multiple sites of perception at PM and ER.
acknowledged_ssus:
- _id: Bio
- _id: LifeSc
acknowledgement: This paper is dedicated to deceased P. Galuszka for his support and
contribution to the project. This research was supported by the Scientific Service
Units (SSU) of IST-Austria through resources provided by the Bioimaging Facility
(BIF), the Life Science Facility (LSF) and by Centre of the Region Haná (CRH), Palacký
University. We thank Lucia Hlusková, Zuzana Pěkná and Martin Hönig for technical
assistance, and Fernando Aniento, Rashed Abualia and Andrej Hurný for sharing material.
The work was supported from ERDF project “Plants as a tool for sustainable global
development” (No. CZ.02.1.01/0.0/0.0/16_019/0000827), from Czech Science Foundation
via projects 16-04184S (O.P., K.K. and K.D.), 18-23972Y (D.Z., K.K.), 17-21122S
(K.B.), Erasmus+ (K.K.), Endowment Fund of Palacký University (K.K.) and EMBO Long-Term
Fellowship, ALTF number 710-2016 (J.C.M.); People Programme (Marie Curie Actions)
of the European Union’s Seventh Framework Programme (FP7/2007-2013) under REA grant
agreement no. [291734] (N.C.); DOC Fellowship of the Austrian Academy of Sciences
at the Institute of Science and Technology, Austria (H.S.).
article_number: '4285'
article_processing_charge: No
article_type: original
author:
- first_name: Karolina
full_name: Kubiasova, Karolina
id: 946011F4-3E71-11EA-860B-C7A73DDC885E
last_name: Kubiasova
orcid: 0000-0001-5630-9419
- 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: Olga
full_name: Šamajová, Olga
last_name: Šamajová
- first_name: Jaroslav
full_name: Nisler, Jaroslav
last_name: Nisler
- first_name: Václav
full_name: Mik, Václav
last_name: Mik
- first_name: Hana
full_name: Semeradova, Hana
id: 42FE702E-F248-11E8-B48F-1D18A9856A87
last_name: Semeradova
- first_name: Lucie
full_name: Plíhalová, Lucie
last_name: Plíhalová
- first_name: Ondřej
full_name: Novák, Ondřej
last_name: Novák
- first_name: Peter
full_name: Marhavý, Peter
id: 3F45B078-F248-11E8-B48F-1D18A9856A87
last_name: Marhavý
orcid: 0000-0001-5227-5741
- first_name: Nicola
full_name: Cavallari, Nicola
id: 457160E6-F248-11E8-B48F-1D18A9856A87
last_name: Cavallari
- first_name: David
full_name: Zalabák, David
last_name: Zalabák
- first_name: Karel
full_name: Berka, Karel
last_name: Berka
- first_name: Karel
full_name: Doležal, Karel
last_name: Doležal
- first_name: Petr
full_name: Galuszka, Petr
last_name: Galuszka
- first_name: Jozef
full_name: Šamaj, Jozef
last_name: Šamaj
- first_name: Miroslav
full_name: Strnad, Miroslav
last_name: Strnad
- first_name: Eva
full_name: Benková, Eva
id: 38F4F166-F248-11E8-B48F-1D18A9856A87
last_name: Benková
orcid: 0000-0002-8510-9739
- first_name: Ondřej
full_name: Plíhal, Ondřej
last_name: Plíhal
- first_name: Lukáš
full_name: Spíchal, Lukáš
last_name: Spíchal
citation:
ama: Kubiasova K, Montesinos López JC, Šamajová O, et al. Cytokinin fluoroprobe
reveals multiple sites of cytokinin perception at plasma membrane and endoplasmic
reticulum. Nature Communications. 2020;11. doi:10.1038/s41467-020-17949-0
apa: Kubiasova, K., Montesinos López, J. C., Šamajová, O., Nisler, J., Mik, V.,
Semerádová, H., … Spíchal, L. (2020). Cytokinin fluoroprobe reveals multiple sites
of cytokinin perception at plasma membrane and endoplasmic reticulum. Nature
Communications. Springer Nature. https://doi.org/10.1038/s41467-020-17949-0
chicago: Kubiasova, Karolina, Juan C Montesinos López, Olga Šamajová, Jaroslav Nisler,
Václav Mik, Hana Semerádová, Lucie Plíhalová, et al. “Cytokinin Fluoroprobe Reveals
Multiple Sites of Cytokinin Perception at Plasma Membrane and Endoplasmic Reticulum.”
Nature Communications. Springer Nature, 2020. https://doi.org/10.1038/s41467-020-17949-0.
ieee: K. Kubiasova et al., “Cytokinin fluoroprobe reveals multiple sites
of cytokinin perception at plasma membrane and endoplasmic reticulum,” Nature
Communications, vol. 11. Springer Nature, 2020.
ista: Kubiasova K, Montesinos López JC, Šamajová O, Nisler J, Mik V, Semerádová
H, Plíhalová L, Novák O, Marhavý P, Cavallari N, Zalabák D, Berka K, Doležal K,
Galuszka P, Šamaj J, Strnad M, Benková E, Plíhal O, Spíchal L. 2020. Cytokinin
fluoroprobe reveals multiple sites of cytokinin perception at plasma membrane
and endoplasmic reticulum. Nature Communications. 11, 4285.
mla: Kubiasova, Karolina, et al. “Cytokinin Fluoroprobe Reveals Multiple Sites of
Cytokinin Perception at Plasma Membrane and Endoplasmic Reticulum.” Nature
Communications, vol. 11, 4285, Springer Nature, 2020, doi:10.1038/s41467-020-17949-0.
short: K. Kubiasova, J.C. Montesinos López, O. Šamajová, J. Nisler, V. Mik, H. Semerádová,
L. Plíhalová, O. Novák, P. Marhavý, N. Cavallari, D. Zalabák, K. Berka, K. Doležal,
P. Galuszka, J. Šamaj, M. Strnad, E. Benková, O. Plíhal, L. Spíchal, Nature Communications
11 (2020).
corr_author: '1'
date_created: 2020-09-06T22:01:12Z
date_published: 2020-08-27T00:00:00Z
date_updated: 2026-04-02T14:35:13Z
day: '27'
ddc:
- '580'
department:
- _id: EvBe
doi: 10.1038/s41467-020-17949-0
ec_funded: 1
external_id:
isi:
- '000567931000002'
pmid:
- '32855390'
file:
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creator: dernst
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file_name: 2020_NatureComm_Kubiasova.pdf
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intvolume: ' 11'
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language:
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month: '08'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
- _id: 261821BC-B435-11E9-9278-68D0E5697425
grant_number: '24746'
name: Molecular mechanisms of the cytokinin regulated endomembrane trafficking to
coordinate plant organogenesis
- _id: 253E54C8-B435-11E9-9278-68D0E5697425
grant_number: ALTF710-2016
name: Molecular mechanism of auxindriven formative divisions delineating lateral
root organogenesis in plants
publication: Nature Communications
publication_identifier:
eissn:
- 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Cytokinin fluoroprobe reveals multiple sites of cytokinin perception at plasma
membrane and endoplasmic reticulum
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: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 11
year: '2020'
...
---
_id: '8943'
abstract:
- lang: eng
text: The widely used non-steroidal anti-inflammatory drugs (NSAIDs) are derivatives
of the phytohormone salicylic acid (SA). SA is well known to regulate plant immunity
and development, whereas there have been few reports focusing on the effects of
NSAIDs in plants. Our studies here reveal that NSAIDs exhibit largely overlapping
physiological activities to SA in the model plant Arabidopsis. NSAID treatments
lead to shorter and agravitropic primary roots and inhibited lateral root organogenesis.
Notably, in addition to the SA-like action, which in roots involves binding to
the protein phosphatase 2A (PP2A), NSAIDs also exhibit PP2A-independent effects.
Cell biological and biochemical analyses reveal that many NSAIDs bind directly
to and inhibit the chaperone activity of TWISTED DWARF1, thereby regulating actin
cytoskeleton dynamics and subsequent endosomal trafficking. Our findings uncover
an unexpected bioactivity of human pharmaceuticals in plants and provide insights
into the molecular mechanism underlying the cellular action of this class of anti-inflammatory
compounds.
acknowledged_ssus:
- _id: LifeSc
- _id: Bio
acknowledgement: "We thank Drs. Sebastian Bednarek (University of Wisconsin-Madison),
Niko Geldner (University of Lausanne), and Karin Schumacher (Heidelberg University)
for kindly sharing published Arabidopsis lines; Dr. Satoshi Naramoto for the pPIN2::PIN2-GFP;
pVHA-a1::VHA-a1-mRFP reporter; the staff at the Life Science Facility and Bioimaging
Facility, Monika Hrtyan, and Dorota Jaworska at IST Austria for technical support;
and Drs. Su Tang (Texas A&M University),\r\nMelinda Abas (BOKU), Eva Benkova´ (IST
Austria), Christian Luschnig (BOKU), Bartel Vanholme (Gent University), and the
Friml group for valuable discussions. The research leading to these findings was
funded by the European Union’s Horizon 2020 program (ERC grant agreement no. 742985,
to J.F.), the People Programme (Marie Curie Actions) of the European Union’s Seventh
Framework Programme (FP7/2007-2013) under REA grant agreement no.\r\n291734, the
Swiss National Funds (31003A_165877, to M.G.), the Ministry of Education, Youth,
and Sports of the Czech Republic (project no. CZ.02.1.01/0.0/0.0/16_019/0000738,
EU Operational Programme ‘‘Research, development and education and Centre for Plant
Experimental Biology’’), and the EU Operational Programme Prague - Competitiveness
(project no. CZ.2.16/3.1.00/21519). S.T. was funded by a European Molecular Biology
Organization (EMBO) long-term postdoctoral fellowship (ALTF 723-2015). X.Z. was
partly supported by a PhD scholarship from the China Scholarship Council."
article_number: '108463'
article_processing_charge: Yes
article_type: original
author:
- first_name: Shutang
full_name: Tan, Shutang
id: 2DE75584-F248-11E8-B48F-1D18A9856A87
last_name: Tan
orcid: 0000-0002-0471-8285
- first_name: Martin
full_name: Di Donato, Martin
last_name: Di Donato
- first_name: Matous
full_name: Glanc, Matous
id: 1AE1EA24-02D0-11E9-9BAA-DAF4881429F2
last_name: Glanc
orcid: 0000-0003-0619-7783
- first_name: Xixi
full_name: Zhang, Xixi
id: 61A66458-47E9-11EA-85BA-8AEAAF14E49A
last_name: Zhang
orcid: 0000-0001-7048-4627
- first_name: Petr
full_name: Klíma, Petr
last_name: Klíma
- first_name: Jie
full_name: Liu, Jie
last_name: Liu
- first_name: Aurélien
full_name: Bailly, Aurélien
last_name: Bailly
- first_name: Noel
full_name: Ferro, Noel
last_name: Ferro
- first_name: Jan
full_name: Petrášek, Jan
last_name: Petrášek
- first_name: Markus
full_name: Geisler, Markus
last_name: Geisler
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
citation:
ama: Tan S, Di Donato M, Glanc M, et al. Non-steroidal anti-inflammatory drugs target
TWISTED DWARF1-regulated actin dynamics and auxin transport-mediated plant development.
Cell Reports. 2020;33(9). doi:10.1016/j.celrep.2020.108463
apa: Tan, S., Di Donato, M., Glanc, M., Zhang, X., Klíma, P., Liu, J., … Friml,
J. (2020). Non-steroidal anti-inflammatory drugs target TWISTED DWARF1-regulated
actin dynamics and auxin transport-mediated plant development. Cell Reports.
Elsevier. https://doi.org/10.1016/j.celrep.2020.108463
chicago: Tan, Shutang, Martin Di Donato, Matous Glanc, Xixi Zhang, Petr Klíma, Jie
Liu, Aurélien Bailly, et al. “Non-Steroidal Anti-Inflammatory Drugs Target TWISTED
DWARF1-Regulated Actin Dynamics and Auxin Transport-Mediated Plant Development.”
Cell Reports. Elsevier, 2020. https://doi.org/10.1016/j.celrep.2020.108463.
ieee: S. Tan et al., “Non-steroidal anti-inflammatory drugs target TWISTED
DWARF1-regulated actin dynamics and auxin transport-mediated plant development,”
Cell Reports, vol. 33, no. 9. Elsevier, 2020.
ista: Tan S, Di Donato M, Glanc M, Zhang X, Klíma P, Liu J, Bailly A, Ferro N, Petrášek
J, Geisler M, Friml J. 2020. Non-steroidal anti-inflammatory drugs target TWISTED
DWARF1-regulated actin dynamics and auxin transport-mediated plant development.
Cell Reports. 33(9), 108463.
mla: Tan, Shutang, et al. “Non-Steroidal Anti-Inflammatory Drugs Target TWISTED
DWARF1-Regulated Actin Dynamics and Auxin Transport-Mediated Plant Development.”
Cell Reports, vol. 33, no. 9, 108463, Elsevier, 2020, doi:10.1016/j.celrep.2020.108463.
short: S. Tan, M. Di Donato, M. Glanc, X. Zhang, P. Klíma, J. Liu, A. Bailly, N.
Ferro, J. Petrášek, M. Geisler, J. Friml, Cell Reports 33 (2020).
corr_author: '1'
date_created: 2020-12-13T23:01:21Z
date_published: 2020-12-01T00:00:00Z
date_updated: 2026-04-03T09:30:47Z
day: '01'
ddc:
- '580'
department:
- _id: JiFr
doi: 10.1016/j.celrep.2020.108463
ec_funded: 1
external_id:
isi:
- '000595658100018'
pmid:
- '33264621'
file:
- access_level: open_access
checksum: ed18cba0fb48ed2e789381a54cc21904
content_type: application/pdf
creator: dernst
date_created: 2020-12-14T07:33:39Z
date_updated: 2020-12-14T07:33:39Z
file_id: '8948'
file_name: 2020_CellReports_Tan.pdf
file_size: 8056434
relation: main_file
success: 1
file_date_updated: 2020-12-14T07:33:39Z
has_accepted_license: '1'
intvolume: ' 33'
isi: 1
issue: '9'
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
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: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
- _id: 256FEF10-B435-11E9-9278-68D0E5697425
grant_number: 723-2015
name: Molecular Mechanism underlying Salicylic Acid Regulation of Endocytic Trafficking
in Arabidopsis
publication: Cell Reports
publication_identifier:
eissn:
- 2211-1247
publication_status: published
publisher: Elsevier
quality_controlled: '1'
related_material:
link:
- description: News on IST Homepage
relation: press_release
url: https://ist.ac.at/en/news/plants-on-aspirin/
scopus_import: '1'
status: public
title: Non-steroidal anti-inflammatory drugs target TWISTED DWARF1-regulated actin
dynamics and auxin transport-mediated plant development
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: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 33
year: '2020'
...
---
OA_place: publisher
_id: '8353'
abstract:
- lang: eng
text: "Mrp (Multi resistance and pH adaptation) are broadly distributed secondary
active antiporters that catalyze the transport of monovalent ions such as sodium
and potassium outside of the cell coupled to the inward translocation of protons.
Mrp antiporters are unique in a way that they are composed of seven subunits (MrpABCDEFG)
encoded in a single operon, whereas other antiporters catalyzing the same reaction
are mostly encoded by a single gene. Mrp exchangers are crucial for intracellular
pH homeostasis and Na+ efflux, essential mechanisms for H+ uptake under alkaline
environments and for reduction of the intracellular concentration of toxic cations.
Mrp displays no homology to any other monovalent Na+(K+)/H+ antiporters but Mrp
subunits have primary sequence similarity to essential redox-driven proton pumps,
such as respiratory complex I and membrane-bound hydrogenases. This similarity
reinforces the hypothesis that these present day redox-driven proton pumps are
descended from the Mrp antiporter. The Mrp structure serves as a model to understand
the yet obscure coupling mechanism between ion or electron transfer and proton
translocation in this large group of proteins. In the thesis, I am presenting
the purification, biochemical analysis, cryo-EM analysis and molecular structure
of the Mrp complex from Anoxybacillus flavithermus solved by cryo-EM at 3.0 Å
resolution. Numerous conditions were screened to purify Mrp to high homogeneity
and to obtain an appropriate distribution of single particles on cryo-EM grids
covered with a continuous layer of ultrathin carbon. A preferred particle orientation
problem was solved by performing a tilted data collection. The activity assays
showed the specific pH-dependent\r\nprofile of secondary active antiporters. The
molecular structure shows that Mrp is a dimer of seven-subunit protomers with
50 trans-membrane helices each. The dimer interface is built by many short and
tilted transmembrane helices, probably causing a thinning of the bacterial membrane.
The surface charge distribution shows an extraordinary asymmetry within each monomer,
revealing presumable proton and sodium translocation pathways. The two largest\r\nand
homologous Mrp subunits MrpA and MrpD probably translocate one proton each into
the cell. The sodium ion is likely being translocated in the opposite direction
within the small subunits along a ladder of charged and conserved residues. Based
on the structure, we propose a mechanism were the antiport activity is accomplished
via electrostatic interactions between the charged cations and key charged residues.
The flexible key TM helices coordinate these\r\nelectrostatic interactions, while
the membrane thinning between the monomers enables the translocation of sodium
across the charged membrane. The entire family of redox-driven proton pumps is
likely to perform their mechanism in a likewise manner."
acknowledged_ssus:
- _id: LifeSc
- _id: EM-Fac
- _id: ScienComp
acknowledgement: "I acknowledge the scientific service units of the IST Austria for
providing resources by the Life Science Facility, the Electron Microscopy Facility
and the high-performance computer cluster. Special thanks to the cryo-EM specialists
Valentin Hodirnau and Daniel Johann Gütl for spending many hours with me in front
of the microscope and for supporting me to collect the data presented here. I also
want to thank Professor Masahiro Ito for providing plasmid DNA\r\nencoding Mrp from
Anoxybacillus flavithermus WK1. I am a recipient of a DOC Fellowship of the Austrian
Academy of Sciences."
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Julia
full_name: Steiner, Julia
id: 3BB67EB0-F248-11E8-B48F-1D18A9856A87
last_name: Steiner
orcid: 0000-0003-0493-3775
citation:
ama: Steiner J. Biochemical and structural investigation of the Mrp antiporter,
an ancestor of complex I. 2020. doi:10.15479/AT:ISTA:8353
apa: Steiner, J. (2020). Biochemical and structural investigation of the Mrp
antiporter, an ancestor of complex I. Institute of Science and Technology
Austria. https://doi.org/10.15479/AT:ISTA:8353
chicago: Steiner, Julia. “Biochemical and Structural Investigation of the Mrp Antiporter,
an Ancestor of Complex I.” Institute of Science and Technology Austria, 2020.
https://doi.org/10.15479/AT:ISTA:8353.
ieee: J. Steiner, “Biochemical and structural investigation of the Mrp antiporter,
an ancestor of complex I,” Institute of Science and Technology Austria, 2020.
ista: Steiner J. 2020. Biochemical and structural investigation of the Mrp antiporter,
an ancestor of complex I. Institute of Science and Technology Austria.
mla: Steiner, Julia. Biochemical and Structural Investigation of the Mrp Antiporter,
an Ancestor of Complex I. Institute of Science and Technology Austria, 2020,
doi:10.15479/AT:ISTA:8353.
short: J. Steiner, Biochemical and Structural Investigation of the Mrp Antiporter,
an Ancestor of Complex I, Institute of Science and Technology Austria, 2020.
corr_author: '1'
date_created: 2020-09-09T14:27:01Z
date_published: 2020-09-09T00:00:00Z
date_updated: 2026-04-08T07:23:36Z
day: '09'
ddc:
- '572'
degree_awarded: PhD
department:
- _id: LeSa
doi: 10.15479/AT:ISTA:8353
file:
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date_created: 2020-09-09T14:22:35Z
date_updated: 2021-09-16T12:40:56Z
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creator: jsteiner
date_created: 2020-09-09T14:23:25Z
date_updated: 2020-09-15T08:48:37Z
file_id: '8355'
file_name: Thesis_Julia_Steiner.docx
file_size: 223328668
relation: source_file
file_date_updated: 2021-09-16T12:40:56Z
has_accepted_license: '1'
language:
- iso: eng
month: '09'
oa: 1
oa_version: None
page: '191'
project:
- _id: 26169496-B435-11E9-9278-68D0E5697425
grant_number: '24741'
name: Revealing the functional mechanism of Mrp antiporter, an ancestor of complex
I
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '8284'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Leonid A
full_name: Sazanov, Leonid A
id: 338D39FE-F248-11E8-B48F-1D18A9856A87
last_name: Sazanov
orcid: 0000-0002-0977-7989
title: Biochemical and structural investigation of the Mrp antiporter, an ancestor
of complex I
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2020'
...
---
_id: '8284'
abstract:
- lang: eng
text: Multiple resistance and pH adaptation (Mrp) antiporters are multi-subunit
Na+ (or K+)/H+ exchangers representing an ancestor of many essential redox-driven
proton pumps, such as respiratory complex I. The mechanism of coupling between
ion or electron transfer and proton translocation in this large protein family
is unknown. Here, we present the structure of the Mrp complex from Anoxybacillus
flavithermus solved by cryo-EM at 3.0 Å resolution. It is a dimer of seven-subunit
protomers with 50 trans-membrane helices each. Surface charge distribution within
each monomer is remarkably asymmetric, revealing probable proton and sodium translocation
pathways. On the basis of the structure we propose a mechanism where the coupling
between sodium and proton translocation is facilitated by a series of electrostatic
interactions between a cation and key charged residues. This mechanism is likely
to be applicable to the entire family of redox proton pumps, where electron transfer
to substrates replaces cation movements.
acknowledged_ssus:
- _id: EM-Fac
- _id: LifeSc
acknowledgement: This research was supported by the Scientific Service Units (SSU)
of IST Austria through resources provided by the Electron Microscopy Facility (EMF),
the Life Science Facility (LSF) and the IST high-performance computing cluster.
We thank Dr Victor-Valentin Hodirnau and Daniel Johann Gütl from IST Austria for
assistance with collecting cryo-EM data. We thank Prof. Masahiro Ito (Graduate School
of Life Sciences, Toyo University, Japan) for a kind provision of plasmid DNA encoding
Mrp from A. flavithermus WK1. JS is a recipient of a DOC Fellowship of the Austrian
Academy of Sciences at the Institute of Science and Technology, Austria.
article_number: e59407
article_processing_charge: No
article_type: original
author:
- first_name: Julia
full_name: Steiner, Julia
id: 3BB67EB0-F248-11E8-B48F-1D18A9856A87
last_name: Steiner
orcid: 0000-0003-0493-3775
- first_name: Leonid A
full_name: Sazanov, Leonid A
id: 338D39FE-F248-11E8-B48F-1D18A9856A87
last_name: Sazanov
orcid: 0000-0002-0977-7989
citation:
ama: Steiner J, Sazanov LA. Structure and mechanism of the Mrp complex, an ancient
cation/proton antiporter. eLife. 2020;9. doi:10.7554/eLife.59407
apa: Steiner, J., & Sazanov, L. A. (2020). Structure and mechanism of the Mrp
complex, an ancient cation/proton antiporter. ELife. eLife Sciences Publications.
https://doi.org/10.7554/eLife.59407
chicago: Steiner, Julia, and Leonid A Sazanov. “Structure and Mechanism of the Mrp
Complex, an Ancient Cation/Proton Antiporter.” ELife. eLife Sciences Publications,
2020. https://doi.org/10.7554/eLife.59407.
ieee: J. Steiner and L. A. Sazanov, “Structure and mechanism of the Mrp complex,
an ancient cation/proton antiporter,” eLife, vol. 9. eLife Sciences Publications,
2020.
ista: Steiner J, Sazanov LA. 2020. Structure and mechanism of the Mrp complex, an
ancient cation/proton antiporter. eLife. 9, e59407.
mla: Steiner, Julia, and Leonid A. Sazanov. “Structure and Mechanism of the Mrp
Complex, an Ancient Cation/Proton Antiporter.” ELife, vol. 9, e59407, eLife
Sciences Publications, 2020, doi:10.7554/eLife.59407.
short: J. Steiner, L.A. Sazanov, ELife 9 (2020).
date_created: 2020-08-24T06:24:04Z
date_published: 2020-07-31T00:00:00Z
date_updated: 2026-04-08T07:23:36Z
day: '31'
ddc:
- '570'
department:
- _id: LeSa
doi: 10.7554/eLife.59407
external_id:
isi:
- '000562123600001'
pmid:
- '32735215'
file:
- access_level: open_access
checksum: b3656d14d5ddbb9d26e3074eea2d0c15
content_type: application/pdf
creator: cziletti
date_created: 2020-08-24T13:31:53Z
date_updated: 2020-08-24T13:31:53Z
file_id: '8289'
file_name: 2020_eLife_Steiner.pdf
file_size: 7320493
relation: main_file
success: 1
file_date_updated: 2020-08-24T13:31:53Z
has_accepted_license: '1'
intvolume: ' 9'
isi: 1
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 26169496-B435-11E9-9278-68D0E5697425
grant_number: '24741'
name: Revealing the functional mechanism of Mrp antiporter, an ancestor of complex
I
publication: eLife
publication_identifier:
eissn:
- 2050-084X
publication_status: published
publisher: eLife Sciences Publications
quality_controlled: '1'
related_material:
link:
- description: News on IST Homepage
relation: press_release
url: https://ist.ac.at/en/news/mystery-of-giant-proton-pump-solved/
record:
- id: '8353'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Structure and mechanism of the Mrp complex, an ancient cation/proton antiporter
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: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 9
year: '2020'
...
---
OA_place: publisher
_id: '8589'
abstract:
- lang: eng
text: The plant hormone auxin plays indispensable roles in plant growth and development.
An essential level of regulation in auxin action is the directional auxin transport
within cells. The establishment of auxin gradient in plant tissue has been attributed
to local auxin biosynthesis and directional intercellular auxin transport, which
both are controlled by various environmental and developmental signals. It is
well established that asymmetric auxin distribution in cells is achieved by polarly
localized PIN-FORMED (PIN) auxin efflux transporters. Despite the initial insights
into cellular mechanisms of PIN polarization obtained from the last decades, the
molecular mechanism and specific regulators mediating PIN polarization remains
elusive. In this thesis, we aim to find novel players in PIN subcellular polarity
regulation during Arabidopsis development. We first characterize the physiological
effect of piperonylic acid (PA) on Arabidopsis hypocotyl gravitropic bending and
PIN polarization. Secondly, we reveal the importance of SCFTIR1/AFB auxin signaling
pathway in shoot gravitropism bending termination. In addition, we also explore
the role of myosin XI complex, and actin cytoskeleton in auxin feedback regulation
on PIN polarity. In Chapter 1, we give an overview of the current knowledge about
PIN-mediated auxin fluxes in various plant tropic responses. In Chapter 2, we
study the physiological effect of PA on shoot gravitropic bending. Our results
show that PA treatment inhibits auxin-mediated PIN3 repolarization by interfering
with PINOID and PIN3 phosphorylation status, ultimately leading to hyperbending
hypocotyls. In Chapter 3, we provide evidence to show that the SCFTIR1/AFB nuclear
auxin signaling pathway is crucial and required for auxin-mediated PIN3 repolarization
and shoot gravitropic bending termination. In Chapter 4, we perform a phosphoproteomics
approach and identify the motor protein Myosin XI and its binding protein, the
MadB2 family, as an essential regulator of PIN polarity for auxin-canalization
related developmental processes. In Chapter 5, we demonstrate the vital role of
actin cytoskeleton in auxin feedback on PIN polarity by regulating PIN subcellular
trafficking. Overall, the data presented in this PhD thesis brings novel insights
into the PIN polar localization regulation that resulted in the (re)establishment
of the polar auxin flow and gradient in response to environmental stimuli during
plant development.
acknowledged_ssus:
- _id: Bio
- _id: LifeSc
acknowledgement: I also want to thank the China Scholarship Council for supporting
my study during the year from 2015 to 2019. I also want to thank IST facilities
– the Bioimaging facility, the media kitchen, the plant facility and all of the
campus services, for their support.
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Huibin
full_name: Han, Huibin
id: 31435098-F248-11E8-B48F-1D18A9856A87
last_name: Han
citation:
ama: Han H. Novel insights into PIN polarity regulation during Arabidopsis development.
2020. doi:10.15479/AT:ISTA:8589
apa: Han, H. (2020). Novel insights into PIN polarity regulation during Arabidopsis
development. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:8589
chicago: Han, Huibin. “Novel Insights into PIN Polarity Regulation during Arabidopsis
Development.” Institute of Science and Technology Austria, 2020. https://doi.org/10.15479/AT:ISTA:8589.
ieee: H. Han, “Novel insights into PIN polarity regulation during Arabidopsis development,”
Institute of Science and Technology Austria, 2020.
ista: Han H. 2020. Novel insights into PIN polarity regulation during Arabidopsis
development. Institute of Science and Technology Austria.
mla: Han, Huibin. Novel Insights into PIN Polarity Regulation during Arabidopsis
Development. Institute of Science and Technology Austria, 2020, doi:10.15479/AT:ISTA:8589.
short: H. Han, Novel Insights into PIN Polarity Regulation during Arabidopsis Development,
Institute of Science and Technology Austria, 2020.
corr_author: '1'
date_created: 2020-09-30T14:50:51Z
date_published: 2020-09-30T00:00:00Z
date_updated: 2026-04-08T07:24:28Z
day: '30'
ddc:
- '580'
degree_awarded: PhD
department:
- _id: JiFr
doi: 10.15479/AT:ISTA:8589
file:
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checksum: c4bda1947d4c09c428ac9ce667b02327
content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
creator: dernst
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date_updated: 2020-09-30T14:50:20Z
file_id: '8590'
file_name: 2020_Han_Thesis.docx
file_size: 49198118
relation: source_file
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creator: dernst
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date_updated: 2021-10-01T13:33:02Z
file_id: '8591'
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file_date_updated: 2021-10-01T13:33:02Z
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language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
page: '164'
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '7643'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
title: Novel insights into PIN polarity regulation during Arabidopsis development
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2020'
...
---
OA_place: publisher
_id: '8341'
abstract:
- lang: eng
text: "One of the most striking hallmarks of the eukaryotic cell is the presence
of intracellular vesicles and organelles. Each of these membrane-enclosed compartments
has a distinct composition of lipids and proteins, which is essential for accurate
membrane traffic and homeostasis. Interestingly, their biochemical identities
are achieved with the help\r\nof small GTPases of the Rab family, which cycle
between GDP- and GTP-bound forms on the selected membrane surface. While this
activity switch is well understood for an individual protein, how Rab GTPases
collectively transition between states to generate decisive signal propagation
in space and time is unclear. In my PhD thesis, I present\r\nin vitro reconstitution
experiments with theoretical modeling to systematically study a minimal Rab5 activation
network from bottom-up. We find that positive feedback based on known molecular
interactions gives rise to bistable GTPase activity switching on system’s scale.
Furthermore, we determine that collective transition near the critical\r\npoint
is intrinsically stochastic and provide evidence that the inactive Rab5 abundance
on the membrane can shape the network response. Finally, we demonstrate that collective
switching can spread on the lipid bilayer as a traveling activation wave, representing
a possible emergent activity pattern in endosomal maturation. Together, our\r\nfindings
reveal new insights into the self-organization properties of signaling networks
away from chemical equilibrium. Our work highlights the importance of systematic
characterization of biochemical systems in well-defined physiological conditions.
This way, we were able to answer long-standing open questions in the field and
close the gap between regulatory processes on a molecular scale and emergent responses
on system’s level."
acknowledged_ssus:
- _id: Bio
- _id: LifeSc
- _id: NanoFab
acknowledgement: My thanks goes to the Loose lab members, BioImaging, Life Science
and Nanofabrication Facilities and the wonderful international community at IST
for sharing this experience with me.
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Urban
full_name: Bezeljak, Urban
id: 2A58201A-F248-11E8-B48F-1D18A9856A87
last_name: Bezeljak
orcid: 0000-0003-1365-5631
citation:
ama: Bezeljak U. In vitro reconstitution of a Rab activation switch. 2020. doi:10.15479/AT:ISTA:8341
apa: Bezeljak, U. (2020). In vitro reconstitution of a Rab activation switch.
Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:8341
chicago: Bezeljak, Urban. “In Vitro Reconstitution of a Rab Activation Switch.”
Institute of Science and Technology Austria, 2020. https://doi.org/10.15479/AT:ISTA:8341.
ieee: U. Bezeljak, “In vitro reconstitution of a Rab activation switch,” Institute
of Science and Technology Austria, 2020.
ista: Bezeljak U. 2020. In vitro reconstitution of a Rab activation switch. Institute
of Science and Technology Austria.
mla: Bezeljak, Urban. In Vitro Reconstitution of a Rab Activation Switch.
Institute of Science and Technology Austria, 2020, doi:10.15479/AT:ISTA:8341.
short: U. Bezeljak, In Vitro Reconstitution of a Rab Activation Switch, Institute
of Science and Technology Austria, 2020.
corr_author: '1'
date_created: 2020-09-08T08:53:53Z
date_published: 2020-09-08T00:00:00Z
date_updated: 2026-04-08T07:24:56Z
day: '08'
ddc:
- '570'
degree_awarded: PhD
department:
- _id: MaLo
doi: 10.15479/AT:ISTA:8341
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creator: dernst
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date_updated: 2021-09-16T12:49:12Z
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file_name: 2020_Urban_Bezeljak_Thesis_TeX.zip
file_size: 65246782
relation: source_file
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checksum: 59a62275088b00b7241e6ff4136434c7
content_type: application/pdf
creator: dernst
date_created: 2020-09-08T09:00:27Z
date_updated: 2021-09-16T12:49:12Z
file_id: '8343'
file_name: 2020_Urban_Bezeljak_Thesis.pdf
file_size: 31259058
relation: main_file
file_date_updated: 2021-09-16T12:49:12Z
has_accepted_license: '1'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
page: '215'
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '7580'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Martin
full_name: Loose, Martin
id: 462D4284-F248-11E8-B48F-1D18A9856A87
last_name: Loose
orcid: 0000-0001-7309-9724
title: In vitro reconstitution of a Rab activation switch
tmp:
image: /images/cc_by_nc_sa.png
legal_code_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC
BY-NC-SA 4.0)
short: CC BY-NC-SA (4.0)
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
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 of the United States of America. 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 of the United States of America.
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 of the United States
of America. 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 of the United States of America, vol.
117, no. 12. 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 of the United States of America. 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 of the
United States of America, vol. 117, no. 12, 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 of the United States of America 117 (2020)
6504–6549.
date_created: 2020-03-12T05:32:26Z
date_published: 2020-03-24T00:00:00Z
date_updated: 2026-04-08T07:24:55Z
day: '24'
department:
- _id: MaLo
- _id: CaBe
doi: 10.1073/pnas.1921027117
external_id:
isi:
- '000521821800040'
pmid:
- '32161136'
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
pmid: 1
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 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:
- 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: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 117
year: '2020'
...
---
_id: '8586'
abstract:
- lang: eng
text: Cryo-electron microscopy (cryo-EM) of cellular specimens provides insights
into biological processes and structures within a native context. However, a major
challenge still lies in the efficient and reproducible preparation of adherent
cells for subsequent cryo-EM analysis. This is due to the sensitivity of many
cellular specimens to the varying seeding and culturing conditions required for
EM experiments, the often limited amount of cellular material and also the fragility
of EM grids and their substrate. Here, we present low-cost and reusable 3D printed
grid holders, designed to improve specimen preparation when culturing challenging
cellular samples directly on grids. The described grid holders increase cell culture
reproducibility and throughput, and reduce the resources required for cell culturing.
We show that grid holders can be integrated into various cryo-EM workflows, including
micro-patterning approaches to control cell seeding on grids, and for generating
samples for cryo-focused ion beam milling and cryo-electron tomography experiments.
Their adaptable design allows for the generation of specialized grid holders customized
to a large variety of applications.
acknowledged_ssus:
- _id: ScienComp
- _id: LifeSc
- _id: Bio
- _id: EM-Fac
acknowledgement: This work was supported by the Austrian Science Fund (FWF, P33367)
to FKMS. BZ acknowledges support by the Niederösterreich Fond. This research was
also supported by the Scientific Service Units (SSU) of IST Austria through resources
provided by Scientific Computing (SciComp), the Life Science Facility (LSF), the
BioImaging Facility (BIF) and the Electron Microscopy Facility (EMF). We thank Georgi
Dimchev (IST Austria) and Sonja Jacob (Vienna Biocenter Core Facilities) for testing
our grid holders in different experimental setups and Daniel Gütl and the Kondrashov
group (IST Austria) for granting us repeated access to their 3D printers. We also
thank Jonna Alanko and the Sixt lab (IST Austria) for providing us HeLa cells, primary
BL6 mouse tail fibroblasts, NIH 3T3 fibroblasts and human telomerase immortalised
foreskin fibroblasts for our experiments. We are thankful to Ori Avinoam and William
Wan for helpful comments on the manuscript and also thank Dorotea Fracchiolla (Art&Science)
for illustrating the graphical abstract.
article_number: '107633'
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Florian
full_name: Fäßler, Florian
id: 404F5528-F248-11E8-B48F-1D18A9856A87
last_name: Fäßler
orcid: 0000-0001-7149-769X
- first_name: Bettina
full_name: Zens, Bettina
id: 45FD126C-F248-11E8-B48F-1D18A9856A87
last_name: Zens
orcid: 0000-0002-9561-1239
- first_name: Robert
full_name: Hauschild, Robert
id: 4E01D6B4-F248-11E8-B48F-1D18A9856A87
last_name: Hauschild
orcid: 0000-0001-9843-3522
- first_name: Florian KM
full_name: Schur, Florian KM
id: 48AD8942-F248-11E8-B48F-1D18A9856A87
last_name: Schur
orcid: 0000-0003-4790-8078
citation:
ama: Fäßler F, Zens B, Hauschild R, Schur FK. 3D printed cell culture grid holders
for improved cellular specimen preparation in cryo-electron microscopy. Journal
of Structural Biology. 2020;212(3). doi:10.1016/j.jsb.2020.107633
apa: Fäßler, F., Zens, B., Hauschild, R., & Schur, F. K. (2020). 3D printed
cell culture grid holders for improved cellular specimen preparation in cryo-electron
microscopy. Journal of Structural Biology. Elsevier. https://doi.org/10.1016/j.jsb.2020.107633
chicago: Fäßler, Florian, Bettina Zens, Robert Hauschild, and Florian KM Schur.
“3D Printed Cell Culture Grid Holders for Improved Cellular Specimen Preparation
in Cryo-Electron Microscopy.” Journal of Structural Biology. Elsevier,
2020. https://doi.org/10.1016/j.jsb.2020.107633.
ieee: F. Fäßler, B. Zens, R. Hauschild, and F. K. Schur, “3D printed cell culture
grid holders for improved cellular specimen preparation in cryo-electron microscopy,”
Journal of Structural Biology, vol. 212, no. 3. Elsevier, 2020.
ista: Fäßler F, Zens B, Hauschild R, Schur FK. 2020. 3D printed cell culture grid
holders for improved cellular specimen preparation in cryo-electron microscopy.
Journal of Structural Biology. 212(3), 107633.
mla: Fäßler, Florian, et al. “3D Printed Cell Culture Grid Holders for Improved
Cellular Specimen Preparation in Cryo-Electron Microscopy.” Journal of Structural
Biology, vol. 212, no. 3, 107633, Elsevier, 2020, doi:10.1016/j.jsb.2020.107633.
short: F. Fäßler, B. Zens, R. Hauschild, F.K. Schur, Journal of Structural Biology
212 (2020).
corr_author: '1'
date_created: 2020-09-29T13:24:06Z
date_published: 2020-12-01T00:00:00Z
date_updated: 2026-05-03T22:30:15Z
day: '01'
ddc:
- '570'
department:
- _id: FlSc
doi: 10.1016/j.jsb.2020.107633
external_id:
isi:
- '000600997800008'
pmid:
- '32987119'
file:
- access_level: open_access
checksum: c48cbf594e84fc2f91966ffaafc0918c
content_type: application/pdf
creator: dernst
date_created: 2020-12-10T14:01:10Z
date_updated: 2020-12-10T14:01:10Z
file_id: '8937'
file_name: 2020_JourStrucBiology_Faessler.pdf
file_size: 7076870
relation: main_file
success: 1
file_date_updated: 2020-12-10T14:01:10Z
has_accepted_license: '1'
intvolume: ' 212'
isi: 1
issue: '3'
keyword:
- electron microscopy
- cryo-EM
- EM sample preparation
- 3D printing
- cell culture
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 9B954C5C-BA93-11EA-9121-9846C619BF3A
grant_number: P33367
name: Structure and isoform diversity of the Arp2/3 complex
- _id: 059B463C-7A3F-11EA-A408-12923DDC885E
name: NÖ-Fonds Preis für die Jungforscherin des Jahres am IST Austria
publication: Journal of Structural Biology
publication_identifier:
issn:
- 1047-8477
publication_status: published
publisher: Elsevier
quality_controlled: '1'
related_material:
record:
- id: '14592'
relation: used_in_publication
status: public
- id: '12491'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: 3D printed cell culture grid holders for improved cellular specimen preparation
in cryo-electron microscopy
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: 212
year: '2020'
...
---
OA_place: publisher
OA_type: hybrid
_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: Yes (in subscription journal)
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
orcid: 0000-0001-6111-9353
- 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 of the United States of America. 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 of the United States of America. 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 of the United States of America. 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 of the United States of America, vol. 117, no. 26. 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 of the United States of America. 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 of the United States of America,
vol. 117, no. 26, 202003346, 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 of the United States of
America 117 (2020).
corr_author: '1'
date_created: 2020-06-22T13:33:52Z
date_published: 2020-06-30T00:00:00Z
date_updated: 2026-05-03T22:30:40Z
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department:
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- _id: EvBe
doi: 10.1073/pnas.2003346117
ec_funded: 1
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project:
- _id: 261099A6-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '742985'
name: Tracing Evolution of Auxin Transport and Polarity in Plants
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call_identifier: FWF
grant_number: P29988
name: RNA-directed DNA methylation in plant development
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:
- description: News on IST Homepage
relation: press_release
url: https://ist.ac.at/en/news/how-wounded-plants-coordinate-their-healing/
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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: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 117
year: '2020'
...
---
OA_place: publisher
_id: '8657'
abstract:
- lang: eng
text: "Synthesis of proteins – translation – is a fundamental process of life. Quantitative
studies anchor translation into the context of bacterial physiology and reveal
several mathematical relationships, called “growth laws,” which capture physiological
feedbacks between protein synthesis and cell growth. Growth laws describe the
dependency of the ribosome abundance as a function of growth rate, which can change
depending on the growth conditions. Perturbations of translation reveal that bacteria
employ a compensatory strategy in which the reduced translation capability results
in increased expression of the translation machinery.\r\nPerturbations of translation
are achieved in various ways; clinically interesting is the application of translation-targeting
antibiotics – translation inhibitors. The antibiotic effects on bacterial physiology
are often poorly understood. Bacterial responses to two or more simultaneously
applied antibiotics are even more puzzling. The combined antibiotic effect determines
the type of drug interaction, which ranges from synergy (the effect is stronger
than expected) to antagonism (the effect is weaker) and suppression (one of the
drugs loses its potency).\r\nIn the first part of this work, we systematically
measure the pairwise interaction network for translation inhibitors that interfere
with different steps in translation. We find that the interactions are surprisingly
diverse and tend to be more antagonistic. To explore the underlying mechanisms,
we begin with a minimal biophysical model of combined antibiotic action. We base
this model on the kinetics of antibiotic uptake and binding together with the
physiological response described by the growth laws. The biophysical model explains
some drug interactions, but not all; it specifically fails to predict suppression.\r\nIn
the second part of this work, we hypothesize that elusive suppressive drug interactions
result from the interplay between ribosomes halted in different stages of translation.
To elucidate this putative mechanism of drug interactions between translation
inhibitors, we generate translation bottlenecks genetically using in- ducible
control of translation factors that regulate well-defined translation cycle steps.
These perturbations accurately mimic antibiotic action and drug interactions,
supporting that the interplay of different translation bottlenecks partially causes
these interactions.\r\nWe extend this approach by varying two translation bottlenecks
simultaneously. This approach reveals the suppression of translocation inhibition
by inhibited translation. We rationalize this effect by modeling dense traffic
of ribosomes that move on transcripts in a translation factor-mediated manner.
This model predicts a dissolution of traffic jams caused by inhibited translocation
when the density of ribosome traffic is reduced by lowered initiation. We base
this model on the growth laws and quantitative relationships between different
translation and growth parameters.\r\nIn the final part of this work, we describe
a set of tools aimed at quantification of physiological and translation parameters.
We further develop a simple model that directly connects the abundance of a translation
factor with the growth rate, which allows us to extract physiological parameters
describing initiation. We demonstrate the development of tools for measuring translation
rate.\r\nThis thesis showcases how a combination of high-throughput growth rate
mea- surements, genetics, and modeling can reveal mechanisms of drug interactions.
Furthermore, by a gradual transition from combinations of antibiotics to precise
genetic interventions, we demonstrated the equivalency between genetic and chemi-
cal perturbations of translation. These findings tile the path for quantitative
studies of antibiotic combinations and illustrate future approaches towards the
quantitative description of translation."
acknowledged_ssus:
- _id: LifeSc
- _id: M-Shop
acknowledgement: I thank Life Science Facilities for their continuous support with
providing top-notch laboratory materials, keeping the devices humming, and coordinating
the repairs and building of custom-designed laboratory equipment with the MIBA Machine
shop.
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Bor
full_name: Kavcic, Bor
id: 350F91D2-F248-11E8-B48F-1D18A9856A87
last_name: Kavcic
orcid: 0000-0001-6041-254X
citation:
ama: 'Kavcic B. Perturbations of protein synthesis: from antibiotics to genetics
and physiology. 2020. doi:10.15479/AT:ISTA:8657'
apa: 'Kavcic, B. (2020). Perturbations of protein synthesis: from antibiotics
to genetics and physiology. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:8657'
chicago: 'Kavcic, Bor. “Perturbations of Protein Synthesis: From Antibiotics to
Genetics and Physiology.” Institute of Science and Technology Austria, 2020. https://doi.org/10.15479/AT:ISTA:8657.'
ieee: 'B. Kavcic, “Perturbations of protein synthesis: from antibiotics to genetics
and physiology,” Institute of Science and Technology Austria, 2020.'
ista: 'Kavcic B. 2020. Perturbations of protein synthesis: from antibiotics to genetics
and physiology. Institute of Science and Technology Austria.'
mla: 'Kavcic, Bor. Perturbations of Protein Synthesis: From Antibiotics to Genetics
and Physiology. Institute of Science and Technology Austria, 2020, doi:10.15479/AT:ISTA:8657.'
short: 'B. Kavcic, Perturbations of Protein Synthesis: From Antibiotics to Genetics
and Physiology, Institute of Science and Technology Austria, 2020.'
corr_author: '1'
date_created: 2020-10-13T16:46:14Z
date_published: 2020-10-14T00:00:00Z
date_updated: 2026-04-08T07:27:48Z
day: '14'
ddc:
- '571'
- '530'
- '570'
degree_awarded: PhD
department:
- _id: GaTk
doi: 10.15479/AT:ISTA:8657
file:
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content_type: application/pdf
creator: bkavcic
date_created: 2020-10-15T06:41:20Z
date_updated: 2021-10-07T22:30:03Z
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has_accepted_license: '1'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
page: '271'
publication_identifier:
isbn:
- 978-3-99078-011-4
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '7673'
relation: part_of_dissertation
status: public
- id: '8250'
relation: part_of_dissertation
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status: public
supervisor:
- first_name: Gašper
full_name: Tkačik, Gašper
id: 3D494DCA-F248-11E8-B48F-1D18A9856A87
last_name: Tkačik
orcid: 0000-0002-6699-1455
- first_name: Mark Tobias
full_name: Bollenbach, Mark Tobias
id: 3E6DB97A-F248-11E8-B48F-1D18A9856A87
last_name: Bollenbach
orcid: 0000-0003-4398-476X
title: 'Perturbations of protein synthesis: from antibiotics to genetics and physiology'
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2020'
...