Dynamin-SNARE interactions control trans-SNARE formation in intracellular membrane fusion.
basic_science · Level V
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- Record sourced from PubMed, PMID 23591871.
- Also identified by DOI 10.1038/ncomms2724 and PMC identifier 3630463.
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Abstract
The fundamental processes of membrane fission and fusion determine size and copy numbers of intracellular organelles. Although 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 homologue 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.
Medical subject headings
- Dynamins
- Membrane Fusion
- SNARE Proteins