1YEB:
reference: Structure determination and analysis of yeast iso-2-cytochrome c and a composite mutant protein., Murphy ME, Nall BT, Brayer GD, J Mol Biol 1992 Sep 5;227(1):160-76. PMID: 1326054

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