<prompt> Tetanus toxin acts on which of the following synaptic proteinR-SNAREQ-SNARESNAP25Rab and Munc 18  <response>: Tetanus toxin cleaves synaptobrevin-2 . Synaptobrevin is a R-SNARE protein also known as Vesicle Associated Membrane ProteinVAMP Q-SNARE proteins are syntaxin Qa, SNAP25Qb Qcand SM protein Munc18 Botulinum toxin BT serotype A, B and E are toxic to humans. BT-A, BT-E cleaves SNAP25, BT-C cleaves both SNAP25 and syntaxin. BT-B, BT-D, BT-F, BT-G cleaves synaptobrevin- 2 VAMP-2 