BUY ACTAVIS COUGH SYRUP FUNDAMENTALS EXPLAINED

G-protein coupled opioid receptor that functions like a receptor for endogenous alpha-neoendorphins and dynorphins, but has reduced affinity for beta-endorphins. Also features to be a receptor for different artificial opioids and with the psychoactive diterpene salvinorin A. Ligand binding triggers a conformation transform that triggers signaling b