4I4C:
reference: Computational, structural, and kinetic evidence that Vibrio vulnificus FrsA is not a cofactor-independent pyruvate decarboxylase., Kellett WF, Brunk E, Desai BJ, Fedorov AA, Almo SC, Gerlt JA, Rothlisberger U, Richards NG, Biochemistry. 2013 Mar 19;52(11):1842-4. doi: 10.1021/bi400093y. Epub 2013 Mar 5. PMID: 23452154

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