Synaptic vesicles re-form rapidly after exocytosis, carrying vesicle membrane proteins that had been exposed on the cell surface by exocytosis back into the cell (Sudhoff 2004). The botulinum toxin type D disulfide-bonded heavy chain - light chain heterodimer (botD HC:LC) bound to ganglioside GD2 and synaptic vesicle protein 2A, 2B, or 2C (SV2A, B, or C) is inferred to be taken up as well, delivering it to the re-formed synaptic vesicle.
Südhof, TC
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