1JFB:
reference: X-ray structure of nitric oxide reductase (cytochrome P450nor) at atomic resolution., Shimizu H, Park SY, Shiro Y, Adachi S, Acta Crystallogr D Biol Crystallogr 2002 Jan;58(Pt 1):81-9. PMID: 11752781

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