CcpA from Geobacter sulfurreducens is a basic di-heme cytochrome c peroxidase.
Hoffmann, M., Seidel, J., Einsle, O.(2009) J Mol Biol 393: 951-965
- PubMed: 19735665 
- DOI: 10.1016/j.jmb.2009.09.001
- Primary Citation of Related Structures:  
3HQ6, 3HQ7, 3HQ8, 3HQ9 - PubMed Abstract: 
Bacterial di-heme cytochrome c peroxidases (CcpAs) protect the cell from reactive oxygen species by reducing hydrogen peroxide to water. The enzymes are c-type cytochromes, with both heme groups covalently attached to the protein chain via a characteristic binding motif ...