2LZZ:
reference: Solution structure of a mutant of the triheme cytochrome PpcA from Geobacter sulfurreducens sheds light on the role of the conserved aromatic residue F15., Dantas JM, Morgado L, Pokkuluri PR, Turner DL, Salgueiro CA, Biochim Biophys Acta. 2013 Jan 8. pii: S0005-2728(12)01108-5. doi:, 10.1016/j.bbabio.2012.12.008. PMID: 23313804

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