Filament-forming cytoskeletal GTPase (By similarity). May play a role in platelet secretion (By similarity). Seems to participate in the process of SNARE complex formation in synaptic vesicles (By similarity).
Subcellular locations: Cytoplasm, Cytoplasm, Cytoskeleton, Synapse, Cell projection, Axon, Cytoplasmic vesicle, Secretory vesicle, Synaptic vesicle membrane, Presynapse
Expressed in axons of immature neurons, localizes to synapses in mature neurons.