5LDX: Structure Of Mammalian Respiratory Complex I, Class3.
reference: Structure of mammalian respiratory complex I., Zhu J, Vinothkumar KR, Hirst J, Nature. 2016 Aug 18;536(7616):354-8. PMID: 27509854

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