1RXE:
reference: The structure of a triple mutant of pI258 arsenate reductase from Staphylococcus aureus and its 5-thio-2-nitrobenzoic acid adduct., Messens J, Van Molle I, Vanhaesebrouck P, Van Belle K, Wahni K, Martins JC, Wyns L, Loris R, Acta Crystallogr D Biol Crystallogr 2004 Jun;60(Pt 6):1180-4. Epub 2004, May 21. PMID: 15159594

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