2L6D:
reference: Structural and mechanistic insights into an unusual thiol disulfide oxidoreductase., Garcin EB, Bornet O, Elantak L, Vita N, Pieulle L, Guerlesquin F, Sebban-Kreuzer C, J Biol Chem. 2011 Nov 28. PMID: 22128175

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