1NWA:
reference: Structure of Mycobacterium tuberculosis methionine sulfoxide reductase A in complex with protein-bound methionine., Taylor AB, Benglis DM Jr, Dhandayuthapani S, Hart PJ, J Bacteriol 2003 Jul;185(14):4119-26. PMID: 12837786

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