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CYP24, CYP26 and CYP27 families C

Unless otherwise stated all data on this page refer to the human proteins. Gene information is provided for human (Hs), mouse (Mm) and rat (Rn).


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CYP24s deactivate vitamin D metabolites and CYP27s are required for the biosynthesis of vitamin D from cholesterol. CYP26 enzymes metabolise excess all-trans-retinol to limit toxicity.


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Vitamin D3 24-hydroxylase (CYP24A1) C Show summary »

CYP26A1 C Show summary » More detailed page go icon to follow link

CYP26B1 C Show summary »

CYP26C1 C Show summary »

Sterol 27-hydroxylase (CYP27A1) C Show summary »

25-Hydroxyvitamin D 1-alpha-hydroxylase (CYP27B1) C Show summary »

CYP27C1 C Show summary »


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How to cite this family page

Database page citation (select format):

Concise Guide to PHARMACOLOGY citation:

Alexander SPH, Fabbro D, Kelly E, Mathie AA, Peters JA, Veale EL, Armstrong JF, Faccenda E, Harding SD, Davies JA et al. (2023) The Concise Guide to PHARMACOLOGY 2023/24: Enzymes. Br J Pharmacol. 180 Suppl 2:S289-373.