5VEU:
reference: The X-ray Crystal Structure of the Human Monooxygenase Cytochrome P450 3A5-Ritonavir Complex Reveals Active Site Differences between P450s 3A4 and 3A5., Hsu MH, Savas U, Johnson EF, Mol Pharmacol. 2017 Nov 1. pii: mol.117.109744. doi: 10.1124/mol.117.109744. PMID: 29093019

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