1NPX:
reference: Structure of NADH peroxidase from Streptococcus faecalis 10C1 refined at 2.16 A resolution., Stehle T, Ahmed SA, Claiborne A, Schulz GE, J Mol Biol 1991 Oct 20;221(4):1325-44. PMID: 1942054

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