Automated description from the Alliance of Genome Resources (Release 3.2)
Exhibits syntaxin-1 binding activity. Involved in exocytosis; positive regulation of exocytosis; and regulation of synaptic vesicle priming. Localizes to several cellular components, including acetylcholine-gated channel complex; extrinsic component of neuronal dense core vesicle membrane; and hippocampal mossy fiber to CA3 synapse. Orthologous to human STXBP5 (syntaxin binding protein 5).