1YCF:
reference: X-ray Crystal Structures of Moorella thermoacetica FprA. Novel Diiron Site Structure and Mechanistic Insights into a Scavenging Nitric Oxide Reductase(,)., Silaghi-Dumitrescu R, Kurtz DM Jr, Ljungdahl LG, Lanzilotta WN, Biochemistry 2005 May 3;44(17):6492-501. PMID: 15850383

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