ACTAVIS PROMETHAZINE CODEINE COUGH SYRUP FOR SALE FOR DUMMIES

G-protein coupled opioid receptor that capabilities as a receptor for endogenous alpha-neoendorphins and dynorphins, but has small affinity for beta-endorphins. Also features as a receptor for a variety of artificial opioids and for that psychoactive diterpene salvinorin A. Ligand binding leads to a conformation adjust that triggers signaling by wa