6B73:
reference: Structure of the Nanobody-Stabilized Active State of the Kappa Opioid Receptor., Che T, Majumdar S, Zaidi SA, Ondachi P, McCorvy JD, Wang S, Mosier PD, Uprety R, Vardy E, Krumm BE, Han GW, Lee MY, Pardon E, Steyaert J, Huang XP, Strachan RT, Tribo AR, Pasternak GW, Carroll FI, Stevens RC, Cherezov V, Katritch V, Wacker D, Roth BL, Cell. 2018 Jan 11;172(1-2):55-67.e15. doi: 10.1016/j.cell.2017.12.011. Epub 2018 , Jan 4. PMID: 29307491

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