2D40:
reference: Structural and biochemical characterization of gentisate 1,2-dioxygenase from Escherichia coli O157:H7., Adams MA, Singh VK, Keller BO, Jia Z, Mol Microbiol. 2006 Sep;61(6):1469-84. Epub 2006 Aug 23. PMID: 16930152

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