3IT4:
reference: The molecular structure of ornithine acetyltransferase from Mycobacterium tuberculosis bound to ornithine, a competitive inhibitor., Sankaranarayanan R, Cherney MM, Garen C, Garen G, Niu C, Yuan M, James MN, J Mol Biol. 2010 Apr 9;397(4):979-90. Epub 2010 Feb 22. PMID: 20184895

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