4QLW:
reference: Redesigning the Blue Copper Azurin into a Redox-active Mononuclear Non-heme Iron Protein: Preparation and Study of Fe(II)-M121E Azurin., Liu J, Meier K, Tian S, Zhang JL, Guo H, Schulz CE, Robinson H, Nilges MJ, Munck E, Lu Y, J Am Chem Soc. 2014 Jul 31. PMID: 25082811

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