1P84:
reference: Structure of the yeast cytochrome bc1 complex with a hydroxyquinone anion Qo site inhibitor bound., Palsdottir H, Lojero CG, Trumpower BL, Hunte C, J Biol Chem 2003 Aug 15;278(33):31303-11. Epub 2003 Jun 2. PMID: 12782631

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