Enables NMDA glutamate receptor activity; calcium channel activity; and transmitter-gated ion channel activity involved in regulation of postsynaptic membrane potential. Involved in regulation of synaptic vesicle exocytosis. Acts upstream of or within calcium ion transport; dendrite development; and prepulse inhibition. Located in neuronal cell body and postsynaptic membrane. Is active in glutamatergic synapse. Is expressed in several structures, including adrenal gland; alimentary system; central nervous system; foot bone; and hand mesenchyme. Orthologous to human GRIN3A (glutamate ionotropic receptor NMDA type subunit 3A). [provided by Alliance of Genome Resources, Apr 2022]