3NV5:
reference: The structure of CYP101D2 unveils a potential path for substrate entry into the active site., Yang W, Bell SG, Wang H, Zhou W, Bartlam M, Wong LL, Rao Z, Biochem J. 2010 Oct 15. PMID: 20950270

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