6A6M:
reference: Inward- and outward-facing X-ray crystal structures of homodimeric P-glycoprotein CmABCB1., Kodan A, Yamaguchi T, Nakatsu T, Matsuoka K, Kimura Y, Ueda K, Kato H, Nat Commun. 2019 Jan 8;10(1):88. doi: 10.1038/s41467-018-08007-x. PMID: 30622258

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