Matches in SemOpenAlex for { <https://semopenalex.org/work/W55681016> ?p ?o ?g. }
- W55681016 abstract "Membrane fission is required for vesicular traffic between intracellular compartments. Dynamin is a GTPase implicated in vesicle scission during Clathrin-mediated endocytosis. It polymerizes into a helix at the neck of endocytic buds. Upon GTP hydrolysis, conformational changes reduce the helical radius and pitch showing that fission proceeds through a constriction mechanism. We show that the deformation of Dynamin helices is highly concerted and damped by the friction between membrane and Dynamin. To further understand fission, Dynamin polymerization and fission are studied on lipid tubes extruded from Giant Unilamellar Vesicles. Fission occurs at the edge of the helix, where the membrane is strongly curved. A statistical analysis of fission time reveals that the fission reaction can be modeled by a single step energy barrier. The fission time dependence on membrane tension, membrane rigidity and torque is established theoretically and validated experimentally. This work gives a quantitative picture of the energy landscape of Dynamin-mediated fission: the height of the energy barrier of fission is estimated around 70 kBT." @default.
- W55681016 created "2016-06-24" @default.
- W55681016 creator A5041721488 @default.
- W55681016 date "2012-01-01" @default.
- W55681016 modified "2023-09-25" @default.
- W55681016 title "DYNAMIN-MEDIATED MEMBRANE FISSION" @default.
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