1CNO:
reference: MAD structure of Pseudomonas nautica dimeric cytochrome c552 mimicks the c4 Dihemic cytochrome domain association., Brown K, Nurizzo D, Besson S, Shepard W, Moura J, Moura I, Tegoni M, Cambillau C, J Mol Biol 1999 Jun 18;289(4):1017-28. PMID: 10369779

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