1GN2:
reference: Engineering of an intersubunit disulfide bridge in the iron-superoxide dismutase of Mycobacterium tuberculosis., Bunting KA, Cooper JB, Tickle IJ, Young DB, Arch Biochem Biophys 2002 Jan 1;397(1):69-76. PMID: 11747311

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