6QV2:
reference: The extracellular gate shapes the energy profile of an ABC exporter., Hutter CAJ, Timachi MH, Hurlimann LM, Zimmermann I, Egloff P, Goddeke H, Kucher S, Stefanic S, Karttunen M, Schafer LV, Bordignon E, Seeger MA, Nat Commun. 2019 May 21;10(1):2260. doi: 10.1038/s41467-019-09892-6. PMID: 31113958

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).