1IUG:
reference: Crystal structure of a putative aspartate aminotransferase belonging to subgroup IV., Katsura Y, Shirouzu M, Yamaguchi H, Ishitani R, Nureki O, Kuramitsu S, Hayashi H, Yokoyama S, Proteins. 2004 May 15;55(3):487-92. PMID: 15103612

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