The OPRM1 gene encodes the mu opioid receptor, which is the primary site of action for the most commonly used opioids, including morphine, heroin, fentanyl, and methadone. It is also the primary receptor for endogenous opioid peptides beta-endorphin and the enkephalins. The OPRM1 receptor is a membrane of the G protein-coupled receptor family. There are at least 3 types of opioid receptors, mu, kappa, and delta, each with a distinct pharmacologic profile.
Protein Aliases: hMOP; KIAA0403; M-OR-1; MOP; MOP receptor; MOR-1; MOR-1C; Mu opiate receptor; Mu opioid receptor; mu opioid receptor hMOR-1a; mu opioid receptor splice variant mMOR-1Z; mu opioid receptor splice variant rMOR-1S; mu opioid receptor splice variant rMOR-1Z; Mu-type opioid receptor; MUOR1; Opioid mu receptor; Opioid Receptor; Opioid receptor B; opioid receptor, mu 1; OTTHUMP00000017463
Gene Aliases: LMOR; M-OR-1; MOP; MOP-R; MOR; MOR-1; MOR-1O; MOR1; MORA; muOR; OPRM; OPRM1; Oprrm1; Ror-b