3DKI:
reference: Cysteine Synthase (CysM) of Mycobacterium tuberculosis Is an O-Phosphoserine Sulfhydrylase: EVIDENCE FOR AN ALTERNATIVE CYSTEINE BIOSYNTHESIS PATHWAY IN MYCOBACTERIA., Agren D, Schnell R, Oehlmann W, Singh M, Schneider G, J Biol Chem. 2008 Nov 14;283(46):31567-74. Epub 2008 Sep 16. PMID: 18799456

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