2VJN:
reference: Reinvestigation of the Catalytic Mechanism of Formyl-CoA Transferase, a Class III CoA-transferase., Berthold CL, Toyota CG, Richards NG, Lindqvist Y, J Biol Chem. 2008 Mar 7;283(10):6519-29. Epub 2007 Dec 27. PMID: 18162462

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