4YPO:
reference: Crystal structure of Mycobacterium tuberculosis ketol-acid reductoisomerase at 1.0 A resolution: A potential target for anti-tuberculosis drug discovery., Lv Y, Kandale A, Wun SJ, McGeary RP, Williams SJ, Kobe B, Sieber V, Schembri MA, Schenk G, Guddat LW, FEBS J. 2016 Feb 15. doi: 10.1111/febs.13672. PMID: 26876563

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