3QH2:
reference: A Missing Enzyme in Thiamin Thiazole Biosynthesis: Identification of TenI as a Thiazole Tautomerase., Hazra AB, Han Y, Chatterjee A, Zhang Y, Lai RY, Ealick SE, Begley TP, J Am Chem Soc. 2011 May 2. PMID: 21534620

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