Acts upstream of or within learning; memory; and regulation of long-term synaptic depression. Located in postsynaptic density. Is integral component of postsynaptic density membrane. Is active in glutamatergic synapse. Is expressed in several structures, including brain; cochlea; genitourinary system; retina; and trigeminal ganglion. Orthologous to human SORCS3 (sortilin related VPS10 domain containing receptor 3). [provided by Alliance of Genome Resources, Apr 2022]