1NJJ:
reference: X-ray structure determination of T. brucei ornithine decarboxylase bound to D-ornithine and to G418: Insights into substrate binding and ODC conformational flexibility., Jackson LK, Goldsmith EJ, Phillips MA, J Biol Chem 2003 Apr 2;. PMID: 12672797

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