2H7R:
reference: Cytochrome P450 active site plasticity: attenuation of imidazole binding in cytochrome P450cam by an L244A mutation., Verras A, Alian A, Montellano PR, Protein Eng Des Sel. 2006 Nov;19(11):491-6. Epub 2006 Aug 30. PMID: 16943206

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