| 2V03: reference: High resolution structure and catalysis of O-acetylserine sulfhydrylase isozyme B from Escherichia coli., Zocher G, Wiesand U, Schulz GE, FEBS J. 2007 Oct;274(20):5382-9. Epub 2007 Sep 26. PMID: 17894825 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).