A SECRET WEAPON FOR BUY ACTAVIS COUGH SYRUP

G-protein coupled opioid receptor that capabilities as being a receptor for endogenous alpha-neoendorphins and dynorphins, but has lower affinity for beta-endorphins. Also features as being a receptor for different artificial opioids and for that psychoactive diterpene salvinorin A. Ligand binding will cause a conformation change that triggers sign