1PZM:
reference: Crystal structure of Leishmania tarentolae hypoxanthine-guanine phosphoribosyltransferase., Monzani PS, Trapani S, Thiemann OH, Oliva G, BMC Struct Biol. 2007 Sep 25;7(1):59. PMID: 17894860

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