2VDJ:
reference: A single amino acid change is responsible for evolution of acyltransferase specificity in bacterial methionine biosynthesis., Zubieta C, Arkus KA, Cahoon RE, Jez JM, J Biol Chem. 2008 Mar 21;283(12):7561-7. Epub 2008 Jan 22. PMID: 18216013

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