- Dickerson, R. E. 1980. Cytochrome c and the evolution of energy metabolism. Sci. Am. 242(3):
98–111. 137-153. 136-153.
- The history of this ancient family of electron-transferring proteins suggests that our metabolic ancestors may have been photosynthetic bacteria for which respiration was only a standby energy mechanism.
- Key words: Cytochromes, Bacteria, Molecules, Amino acids, Molecular chains, Oxygen, Hydrogen, Cyanobacteria, Cell respiration