5X7D:
reference: Mechanism of intracellular allosteric beta2AR antagonist revealed by X-ray crystal structure., Liu X, Ahn S, Kahsai AW, Meng KC, Latorraca NR, Pani B, Venkatakrishnan AJ, Masoudi A, Weis WI, Dror RO, Chen X, Lefkowitz RJ, Kobilka BK, Nature. 2017 Aug 24;548(7668):480-484. doi: 10.1038/nature23652. Epub 2017 Aug, 16. PMID: 28813418

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