Open Access
Open access
Science, volume 339, issue 6126, pages 1433-1436

Geometric Catalysis of Membrane Fission Driven by Flexible Dynamin Rings

Shnyrova Anna V 1
Bashkirov Pavel V 2
Akimov Sergey A 2, 3
Pucadyil Thomas J. 4
Zimmerberg Joshua 5
Schmid Sandra L. 6
Frolov Vadim A 1, 7
1
 
Biophysics Unit (CSIC, UPV/EHU) and Department of Biochemistry and Molecular Biology, University of the Basque Country, Leioa, Spain.
5
 
Program in Physical Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA.
6
 
Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
Publication typeJournal Article
Publication date2013-03-22
Journal: Science
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor56.9
ISSN00368075, 10959203
Multidisciplinary
Abstract
Biological membrane fission requires protein-driven stress. The guanosine triphosphatase (GTPase) dynamin builds up membrane stress by polymerizing into a helical collar that constricts the neck of budding vesicles. How this curvature stress mediates nonleaky membrane remodeling is actively debated. Using lipid nanotubes as substrates to directly measure geometric intermediates of the fission pathway, we found that GTP hydrolysis limits dynamin polymerization into short, metastable collars that are optimal for fission. Collars as short as two rungs translated radial constriction to reversible hemifission via membrane wedging of the pleckstrin homology domains (PHDs) of dynamin. Modeling revealed that tilting of the PHDs to conform with membrane deformations creates the low-energy pathway for hemifission. This local coordination of dynamin and lipids suggests how membranes can be remodeled in cells.

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GOST Copy
Shnyrova A. V. et al. Geometric Catalysis of Membrane Fission Driven by Flexible Dynamin Rings // Science. 2013. Vol. 339. No. 6126. pp. 1433-1436.
GOST all authors (up to 50) Copy
Shnyrova A. V., Bashkirov P. V., Akimov S. A., Pucadyil T. J., Zimmerberg J., Schmid S., Frolov V. A. Geometric Catalysis of Membrane Fission Driven by Flexible Dynamin Rings // Science. 2013. Vol. 339. No. 6126. pp. 1433-1436.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1126/science.1233920
UR - https://doi.org/10.1126%2Fscience.1233920
TI - Geometric Catalysis of Membrane Fission Driven by Flexible Dynamin Rings
T2 - Science
AU - Shnyrova, Anna V
AU - Bashkirov, Pavel V
AU - Akimov, Sergey A
AU - Pucadyil, Thomas J.
AU - Zimmerberg, Joshua
AU - Schmid, Sandra L.
AU - Frolov, Vadim A
PY - 2013
DA - 2013/03/22 00:00:00
PB - American Association for the Advancement of Science (AAAS)
SP - 1433-1436
IS - 6126
VL - 339
SN - 0036-8075
SN - 1095-9203
ER -
BibTex |
Cite this
BibTex Copy
@article{2013_Shnyrova,
author = {Anna V Shnyrova and Pavel V Bashkirov and Sergey A Akimov and Thomas J. Pucadyil and Joshua Zimmerberg and Sandra L. Schmid and Vadim A Frolov},
title = {Geometric Catalysis of Membrane Fission Driven by Flexible Dynamin Rings},
journal = {Science},
year = {2013},
volume = {339},
publisher = {American Association for the Advancement of Science (AAAS)},
month = {mar},
url = {https://doi.org/10.1126%2Fscience.1233920},
number = {6126},
pages = {1433--1436},
doi = {10.1126/science.1233920}
}
MLA
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MLA Copy
Shnyrova, Anna V., et al. “Geometric Catalysis of Membrane Fission Driven by Flexible Dynamin Rings.” Science, vol. 339, no. 6126, Mar. 2013, pp. 1433-1436. https://doi.org/10.1126%2Fscience.1233920.
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