Predicted to enable zinc ion transmembrane transporter activity. Involved in zinc ion import into synaptic vesicle. Acts upstream of or within positive regulation of transport. Located in hippocampal mossy fiber and synaptic vesicle membrane. Is active in glutamatergic synapse and hippocampal mossy fiber to CA3 synapse. Is integral component of synaptic vesicle membrane. Is expressed in several structures, including brain; metanephros; olfactory nerve; and spinal cord mantle layer. Orthologous to human SLC30A3 (solute carrier family 30 member 3). [provided by Alliance of Genome Resources, Apr 2022]