It then leaves the vesicle for the neuron cytosol where it cleaves vesicle associated membrane protein ( VAMP ) synaptobrevin , which is necessary for membrane fusion of small synaptic vesicles ( SSV 's ) .
PRON ADV VERB DET NOUN ADP DET NOUN NOUN ADV PRON VERB NOUN VERB NOUN NOUN ( PROPN ) NOUN , DET VERB ADJ ADP ADJ NOUN ADP ADJ ADJ NOUN ( PROPN PART ) .