THE BEST SIDE OF BUY ACTAVIS PROMETHAZINE WITH CODEINE SYRUP

G-protein coupled opioid receptor that capabilities as being a receptor for endogenous alpha-neoendorphins and dynorphins, but has minimal affinity for beta-endorphins. Also functions to be a receptor for different synthetic opioids and for the psychoactive diterpene salvinorin A. Ligand binding leads to a conformation alter that triggers signaling