4CTS:
reference: Crystal structure analysis and molecular model of a complex of citrate synthase with oxaloacetate and S-acetonyl-coenzyme A., Wiegand G, Remington S, Deisenhofer J, Huber R, J Mol Biol. 1984 Mar 25;174(1):205-19. PMID: 6716477

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