6B20:
reference: Targeting G protein-coupled receptor signaling at the G protein level with a selective nanobody inhibitor., Gulati S, Jin H, Masuho I, Orban T, Cai Y, Pardon E, Martemyanov KA, Kiser PD, Stewart PL, Ford CP, Steyaert J, Palczewski K, Nat Commun. 2018 May 18;9(1):1996. doi: 10.1038/s41467-018-04432-0. PMID: 29777099

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