Constitutively active ?-opioid receptors inhibit adenylyl cyclase activity in intact cells and activate G proteins differently than the agonist [D-Ala2,N-MePhe4,Gly-ol5]enkephalin
Liu, J.G., Ruckle, M.B., Prather, P.L. Constitutively active ?-opioid receptors inhibit adenylyl cyclase activity in intact cells and activate G proteins differently than the agonist [D-Ala2,N-MePhe4,Gly-ol5]enkephalin. J. Biol. Chem. 2001; 276(41):37779-37786, PMID 11500514.