Contributes to calcium channel activity. Involved in protein insertion into membrane and regulation of calcium ion transport. Located in neuronal cell body. Part of NMDA selective glutamate receptor complex. Is expressed in central nervous system; gut gland; retina; and testis. Orthologous to human GRIN3B (glutamate ionotropic receptor NMDA type subunit 3B). [provided by Alliance of Genome Resources, Apr 2022]