1EF9:
reference: New reactions in the crotonase superfamily: structure of methylmalonyl CoA decarboxylase from Escherichia coli., Benning MM, Haller T, Gerlt JA, Holden HM, Biochemistry 2000 Apr 25;39(16):4630-9. PMID: 10769118

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