Predicted to enable calcium channel regulator activity; ionotropic glutamate receptor binding activity; and voltage-gated calcium channel activity. Involved in regulation of AMPA receptor activity and regulation of postsynaptic neurotransmitter receptor activity. Acts upstream of or within transmission of nerve impulse. Located in glutamatergic synapse and somatodendritic compartment. Part of AMPA glutamate receptor complex. Is expressed in several structures, including central nervous system; eye; genitourinary system; gut; and respiratory system. Orthologous to human CACNG4 (calcium voltage-gated channel auxiliary subunit gamma 4). [provided by Alliance of Genome Resources, Apr 2022]