2H12:
reference: Structure of a NADH-insensitive hexameric citrate synthase that resists acid inactivation., Francois JA, Starks CM, Sivanuntakorn S, Jiang H, Ransome AE, Nam JW, Constantine CZ, Kappock TJ, Biochemistry. 2006 Nov 14;45(45):13487-99. PMID: 17087502

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