Cell, volume 135, issue 7, pages 1276-1286

GTPase Cycle of Dynamin Is Coupled to Membrane Squeeze and Release, Leading to Spontaneous Fission

Akimov Sergey 2, 3
Evseev Alexey I 4
Schmid Sandra L. 5
Zimmerberg Joshua 1
Frolov V.A. 1
1
 
Program on Physical Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), Bethesda, MD 20892-1855, USA.
3
 
Program on Physical Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), Bethesda, MD 20892-1855, USA
5
 
Department of Cell Biology The Scripps Research Institute La Jolla, CA 92037, USA
Publication typeJournal Article
Publication date2008-12-12
Journal: Cell
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor64.5
ISSN00928674, 10974172
General Biochemistry, Genetics and Molecular Biology
Abstract
The GTPase dynamin is critically involved in membrane fission during endocytosis. How does dynamin use the energy of GTP hydrolysis for membrane remodeling? By monitoring the ionic permeability through lipid nanotubes (NT), we found that dynamin was capable of squeezing NT to extremely small radii, depending on the NT lipid composition. However, long dynamin scaffolds did not produce fission: instead, fission followed GTPase-dependent cycles of assembly and disassembly of short dynamin scaffolds and involved a stochastic process dependent on the curvature stress imposed by dynamin. Fission happened spontaneously upon NT release from the scaffold, without leakage. Our calculations revealed that local narrowing of NT could induce cooperative lipid tilting, leading to self-merger of the inner monolayer of NT (hemifission), consistent with the absence of leakage. We propose that dynamin transmits GTP's energy to periodic assembling of a limited curvature scaffold that brings lipids to an unstable intermediate.

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Bashkirov P. et al. GTPase Cycle of Dynamin Is Coupled to Membrane Squeeze and Release, Leading to Spontaneous Fission // Cell. 2008. Vol. 135. No. 7. pp. 1276-1286.
GOST all authors (up to 50) Copy
Bashkirov P., Akimov S., Evseev A. I., Schmid S. L., Zimmerberg J., Frolov V. GTPase Cycle of Dynamin Is Coupled to Membrane Squeeze and Release, Leading to Spontaneous Fission // Cell. 2008. Vol. 135. No. 7. pp. 1276-1286.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1016/j.cell.2008.11.028
UR - https://doi.org/10.1016%2Fj.cell.2008.11.028
TI - GTPase Cycle of Dynamin Is Coupled to Membrane Squeeze and Release, Leading to Spontaneous Fission
T2 - Cell
AU - Bashkirov, Pavel
AU - Akimov, Sergey
AU - Evseev, Alexey I
AU - Schmid, Sandra L.
AU - Zimmerberg, Joshua
AU - Frolov, V.A.
PY - 2008
DA - 2008/12/12 00:00:00
PB - Elsevier
SP - 1276-1286
IS - 7
VL - 135
SN - 0092-8674
SN - 1097-4172
ER -
BibTex |
Cite this
BibTex Copy
@article{2008_Bashkirov,
author = {Pavel Bashkirov and Sergey Akimov and Alexey I Evseev and Sandra L. Schmid and Joshua Zimmerberg and V.A. Frolov},
title = {GTPase Cycle of Dynamin Is Coupled to Membrane Squeeze and Release, Leading to Spontaneous Fission},
journal = {Cell},
year = {2008},
volume = {135},
publisher = {Elsevier},
month = {dec},
url = {https://doi.org/10.1016%2Fj.cell.2008.11.028},
number = {7},
pages = {1276--1286},
doi = {10.1016/j.cell.2008.11.028}
}
MLA
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MLA Copy
Bashkirov, Pavel, et al. “GTPase Cycle of Dynamin Is Coupled to Membrane Squeeze and Release, Leading to Spontaneous Fission.” Cell, vol. 135, no. 7, Dec. 2008, pp. 1276-1286. https://doi.org/10.1016%2Fj.cell.2008.11.028.
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