Cytochrome P450, family 16, also known as CYP16, is an animal cytochrome P450 monooxygenase family. This family was the last vertebrate CYP family recognized, [1] and is absent from the mammal and zebrafish genome, but found in other fish and many invertebrates including some very old branches, such as Trichoplax and Oscarella carmela . Synteny mapping of CYP16 family members showing linkages to CYP26 family members, means the tetrapod's CYP26 may evolved from CYP16 of fish. [2]
In the past, CYP16 family refers to some nematoda (roundworms) genes, which have been discontinued and changed to the Cytochrome P450, family 13, subfamily B (CYP13B), because its genetic relationship with the subfamily CYP13A. [3]