W. Dopamine receptor partial agonists and addiction. Eur. J. Pharmacol. 752, 112–115 (2015). Article CAS PubMed Google Scholar Shi, L. et al. β2 adrenergic receptor activation. Modulation of the proline kink in transmembrane 6 by a rotamer toggle switch. J. Biol. Chem. 277, 40989...