Translations:Cytochrome P450/2/en
P450 enzymes have been identified in all kingdoms of life: animals, plants, fungi, protists, bacteria, and archaea, as well as in viruses. However, they are not omnipresent; for example, they have not been found in Escherichia coli. 2018年現在[update], more than 300,000 distinct CYP proteins are known.