1R6W:
reference: Evolution of Enzymatic Activity in the Enolase Superfamily: Structural and Mutagenic Studies of the Mechanism of the Reaction Catalyzed by o-Succinylbenzoate Synthase from Escherichia coli(,)., Klenchin VA, Taylor Ringia EA, Gerlt JA, Rayment I, Biochemistry 2003 Dec 16;42(49):14427-33. PMID: 14661953

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