1GMX:
reference: Escherichia coli GlpE is a prototype sulfurtransferase for the single-domain rhodanese homology superfamily., Spallarossa A, Donahue JL, Larson TJ, Bolognesi M, Bordo D, Structure (Camb) 2001 Nov;9(11):1117-25. PMID: 11709175

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