1FB5:
reference: Functional and structural characterization of ovine ornithine transcarbamoylase., De Gregorio A, Battistutta R, Arena N, Panzalorto M, Francescato P, Valentini G, Bruno G, Zanotti G, Org Biomol Chem 2003 Sep 21;1(18):3178-85. PMID: 14527149

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