A structural constituent of myelin sheath. Involved in several processes, including AMPA selective glutamate receptor signaling pathway; nervous system development; and positive regulation of calcium ion transmembrane transport. Located in myelin sheath. Part of integrin alphav-beta3 complex. Used to study demyelinating disease and visual epilepsy. Human ortholog(s) of this gene implicated in Pelizaeus-Merzbacher disease and hereditary spastic paraplegia 2. Orthologous to human PLP1 (proteolipid protein 1). [provided by Alliance of Genome Resources, Apr 2022]