2ZTW:
reference: Crystal structure of 3-isopropylmalate dehydrogenase in complex with NAD(+) and a designed inhibitor., Nango E, Yamamoto T, Kumasaka T, Eguchi T, Bioorg Med Chem. 2009 Nov 15;17(22):7789-94. Epub 2009 Sep 19. PMID: 19833522

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