Enables several functions, including ATP-dependent protein binding activity; calcium-dependent protein binding activity; and transmembrane transporter binding activity. Involved in several processes, including SNARE complex assembly; positive regulation of secretion by cell; and synaptic vesicle exocytosis. Located in several cellular components, including actomyosin; presynaptic active zone membrane; and secretory vesicle. Part of synaptobrevin 2-SNAP-25-syntaxin-1a complex; synaptobrevin 2-SNAP-25-syntaxin-1a-complexin I complex; and synaptobrevin 2-SNAP-25-syntaxin-1a-complexin II complex. Is active in glutamatergic synapse. Is integral component of presynaptic membrane and integral component of synaptic vesicle membrane. Human ortholog(s) of this gene implicated in Creutzfeldt-Jakob disease and Hirschsprung's disease. Orthologous to human STX1A (syntaxin 1A). [provided by Alliance of Genome Resources, Apr 2022]