Predicted to enable calcium ion binding activity. Predicted to be involved in synaptic membrane adhesion. Predicted to act upstream of or within several processes, including negative regulation of synaptic transmission; presynaptic active zone assembly; and regulation of synaptic vesicle clustering. Predicted to be active in GABA-ergic synapse and glutamatergic synapse. Predicted to be integral component of postsynaptic membrane and integral component of presynaptic membrane. Orthologous to human PCDH17 (protocadherin 17). [provided by Alliance of Genome Resources, Apr 2022]