1K4Q:
reference: Crystal structure of the antioxidant enzyme glutathione reductase inactivated by peroxynitrite., Savvides SN, Scheiwein M, Bohme CC, Arteel GE, Karplus PA, Becker K, Schirmer RH, J Biol Chem 2002 Jan 25;277(4):2779-84. PMID: 11705998

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