1N9C:
reference: Structure and dynamics of reduced Bacillus pasteurii cytochrome c: oxidation state dependent properties and implications for electron transfer processes., Bartalesi I, Bertini I, Rosato A, Biochemistry 2003 Jan 28;42(3):739-45. PMID: 12534286

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