A SECRET WEAPON FOR BUY ACTAVIS COUGH SYRUP

G-protein coupled opioid receptor that features being a receptor for endogenous alpha-neoendorphins and dynorphins, but has reduced affinity for beta-endorphins. Also capabilities like a receptor for various synthetic opioids and for that psychoactive diterpene salvinorin A. Ligand binding causes a conformation transform that triggers signaling by