5VCD:
reference: High-Level Production and Properties of the Cysteine-Depleted Cytochrome P450 3A4., Sevrioukova IF, Biochemistry. 2017 Jun 20;56(24):3058-3067. doi: 10.1021/acs.biochem.7b00334., Epub 2017 Jun 7. PMID: 28590129

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