Predicted to enable calcium channel regulator activity. Predicted to be involved in several processes, including regulation of synaptic vesicle exocytosis; social behavior; and vocalization behavior. Predicted to act upstream of or within neurotransmitter secretion and synapse assembly. Predicted to be located in extracellular region; plasma membrane; and presynapse. Predicted to be integral component of membrane. Predicted to be part of protein-containing complex. Predicted to be active in GABA-ergic synapse. Orthologous to human NRXN3 (neurexin 3). [provided by Alliance of Genome Resources, Apr 2022]