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Dynamin-SNARE interactions control trans-SNARE formation in intracellular membrane fusion

Authors
Journal
Nature Communications
2041-1723
Publisher
Nature Publishing Group
Publication Date
Volume
4
Identifiers
DOI: 10.1038/ncomms2724
Keywords
  • Article
Disciplines
  • Biology

Abstract

The fundamental processes of membrane fission and fusion determine size and copy numbers of intracellular organelles. While SNARE proteins and tethering complexes mediate intracellular membrane fusion, fission requires the presence of dynamin or dynamin-related proteins. Here we study these reactions in native yeast vacuoles and find that the yeast dynamin homolog Vps1 is not only an essential part of the fission machinery, but also controls membrane fusion by generating an active Qa SNARE- tethering complex pool, which is essential for trans-SNARE formation. Our findings provide new insight into the role of dynamins in membrane fusion by directly acting on SNARE proteins.

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