6RXN:
reference: The structure of rubredoxin from Desulfovibrio desulfuricans strain 27774 at 1.5 A resolution., Stenkamp RE, Sieker LC, Jensen LH, Proteins 1990;8(4):352-64. PMID: 2091025

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