Enables voltage-gated calcium channel activity. Involved in calcium ion transport and regulation of ion transmembrane transport. Part of L-type voltage-gated calcium channel complex. Is active in glutamatergic synapse. Is anchored component of postsynaptic membrane and anchored component of presynaptic active zone membrane. Orthologous to human CACNA2D1 (calcium voltage-gated channel auxiliary subunit alpha2delta 1). [provided by Alliance of Genome Resources, Apr 2022]