6ZR2:
reference: Structure of inhibitor-bound mammalian complex I., Bridges HR, Fedor JG, Blaza JN, Di Luca A, Jussupow A, Jarman OD, Wright JJ, Agip AA, Gamiz-Hernandez AP, Roessler MM, Kaila VRI, Hirst J, Nat Commun. 2020 Oct 16;11(1):5261. doi: 10.1038/s41467-020-18950-3. PMID: 33067417

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