2KZH:
reference: The structure of a truncated phosphoribosylanthranilate isomerase suggests a unified model for evolution of the (betaalpha)8 barrel fold., Setiyaputra S, Mackay JP, Patrick WM, J Mol Biol. 2011 Apr 29;408(2):291-303. Epub 2011 Feb 25. PMID: 21354426

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