Mutual control of membrane fission and fusion proteins.

Details

Serval ID
serval:BIB_B5C470501D74
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Mutual control of membrane fission and fusion proteins.
Journal
Cell
Author(s)
Peters C., Baars T.L., Bühler S., Mayer A.
ISSN
0092-8674 (Print)
ISSN-L
0092-8674
Publication state
Published
Issued date
2004
Volume
119
Number
5
Pages
667-678
Language
english
Abstract
Membrane fusion and fission are antagonistic reactions controlled by different proteins. Dynamins promote membrane fission by GTP-driven changes of conformation and polymerization state, while SNAREs fuse membranes by forming complexes between t- and v-SNAREs from apposed vesicles. Here, we describe a role of the dynamin-like GTPase Vps1p in fusion of yeast vacuoles. Vps1p forms polymers that couple several t-SNAREs together. At the onset of fusion, the SNARE-activating ATPase Sec18p/NSF and the t-SNARE depolymerize Vps1p and release it from the membrane. This activity is independent of the SNARE coactivator Sec17p/alpha-SNAP and of the v-SNARE. Vps1p release liberates the t-SNAREs for initiating fusion and at the same time disrupts fission activity. We propose that reciprocal control between fusion and fission components exists, which may prevent futile cycles of fission and fusion.
Keywords
Adenosine Triphosphatases/metabolism, Carrier Proteins/metabolism, Dynamins/genetics, Dynamins/metabolism, GTP-Binding Proteins/metabolism, Intracellular Membranes/metabolism, Membrane Fusion/genetics, Membrane Proteins/metabolism, Models, Biological, Organelles/metabolism, Protein Transport/physiology, Qa-SNARE Proteins, SNARE Proteins, Saccharomyces cerevisiae, Saccharomyces cerevisiae Proteins/metabolism, Soluble N-Ethylmaleimide-Sensitive Factor Attachment Proteins, Vacuoles/metabolism, Vesicular Transport Proteins/metabolism
Pubmed
Web of science
Open Access
Yes
Create date
24/01/2008 15:06
Last modification date
20/08/2019 15:24
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