Predicted to enable calcium ion binding activity. Predicted to be involved in positive regulation of synapse assembly; positive regulation of synaptic transmission; and regulation of presynapse assembly. Predicted to act upstream of or within several processes, including chemical synaptic transmission; positive regulation of protein localization to synapse; and synapse assembly. Located in postsynaptic membrane. Orthologous to human CLSTN3 (calsyntenin 3). [provided by Alliance of Genome Resources, Apr 2022]