1SK7:
reference: Structural basis for novel delta-regioselective heme oxygenation in the opportunistic pathogen Pseudomonas aeruginosa., Friedman J, Lad L, Li H, Wilks A, Poulos TL, Biochemistry 2004 May 11;43(18):5239-45. PMID: 15122889

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