Predicted to enable calcium-dependent protein binding activity and syntaxin-1 binding activity. Involved in positive regulation of synaptic plasticity and regulation of synaptic vesicle fusion to presynaptic active zone membrane. Located in glutamatergic synapse. Is active in calyx of Held. Is expressed in nervous system; retina layer; and skeletal muscle. Used to study schizophrenia. Orthologous to human CPLX2 (complexin 2). [provided by Alliance of Genome Resources, Apr 2022]