Enables calcium channel inhibitor activity and zinc ion transmembrane transporter activity. Involved in detoxification of cadmium ion; metal ion transport; and negative regulation of neurotransmitter secretion. Acts upstream of or within zinc ion transport. Located in T-tubule. Is integral component of membrane. Is active in Schaffer collateral - CA1 synapse. Is integral component of postsynaptic density membrane. Orthologous to human SLC30A1 (solute carrier family 30 member 1). [provided by Alliance of Genome Resources, Apr 2022]