A v-SNARE is a SNARE protein assigned to a transport vesicle in a specified fusion event. Complementary interaction with a t-SNARE on the target produces a membrane-bridging SNARE complex. Synaptobrevin is a familiar example in neuronal secretion. The label describes which membrane initially carries the component; after membrane fusion, both sets of components occupy the same membrane and must be reorganized for reuse. [ref]
SNAREpins: minimal machinery for membrane fusion by T. Weber and others. Weber and others, 1998, reconstitution and formation of SNAREpins
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