5DQN:
reference: Cytochrome P450 125A4, the Third Cholesterol C-26 Hydroxylase from Mycobacterium smegmatis., Frank DJ, Waddling CA, La M, Ortiz de Montellano PR, Biochemistry. 2015 Nov 24;54(46):6909-16. doi: 10.1021/acs.biochem.5b01029. Epub , 2015 Nov 11. PMID: 26522442

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