1FA5:
reference: Determination of the structure of Escherichia coli glyoxalase I suggests a structural basis for differential metal activation., He MM, Clugston SL, Honek JF, Matthews BW, Biochemistry 2000 Aug 1;39(30):8719-27. PMID: 10913283

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