2VFC:
reference: Divergence of cofactor recognition across evolution: coenzyme A binding in a prokaryotic arylamine N-acetyltransferase., Fullam E, Westwood IM, Anderton MC, Lowe ED, Sim E, Noble ME, J Mol Biol. 2008 Jan 4;375(1):178-91. Epub 2007 Oct 13. PMID: 18005984

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