Predicted to enable SNAP receptor activity and syntaxin binding activity. Involved in cholinergic synaptic transmission. Located in plasma membrane and synapse. Expressed in several structures, including CAN; excretory gland cell; mechanosensory neurons; rectal gland cell; and somatic nervous system. Human ortholog(s) of this gene implicated in Down syndrome and congenital myasthenic syndrome 18. Is an ortholog of human SNAP25 (synaptosome associated protein 25).