1FHU:
reference: Evolution of enzymatic activity in the enolase superfamily: structure of o-succinylbenzoate synthase from Escherichia coli in complex with Mg2+ and o-succinylbenzoate., Thompson TB, Garrett JB, Taylor EA, Meganathan R, Gerlt JA, Rayment I, Biochemistry 2000 Sep 5;39(35):10662-76. PMID: 10978150

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