1IK3:
reference: Three-dimensional structure of a purple lipoxygenase., Skrzypczak-Jankun E, Bross RA, Carroll RT, Dunham WR, Funk MO Jr, J Am Chem Soc 2001 Nov 7;123(44):10814-20. PMID: 11686682

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