25-Hydroxyvitamin D3 1-alpha-hydroxylase

Cytochrome P450, family 27, subfamily B, polypeptide 1
Identifiers
Symbols CYP27B1; CP2B; CYP1; CYP1alpha; CYP27B; P450c1; PDDR; VDD1; VDDR; VDDRI; VDR
External IDs OMIM609506 MGI1098274 HomoloGene37139 GeneCards: CYP27B1 Gene
EC number 1.14.13.13
Orthologs
Species Human Mouse
Entrez 1594 13115
Ensembl ENSG00000111012 ENSMUSG00000006724
UniProt O15528 O35084
RefSeq (mRNA) NM_000785 NM_010009.2
RefSeq (protein) NP_000776 NP_034139.2
Location (UCSC) Chr 12:
58.16 – 58.16 Mb
Chr 10:
126.49 – 126.49 Mb
PubMed search [1] [2]

25-Hydroxyvitamin D3 1-alpha-hydroxylase (VD3 1A hydroxylase) also known as cytochrome p450 27B1 (CYP27B1) is a cytochrome P450 enzyme that in humans is encoded by the CYP27B1 gene.[1][2][3]

VD3 1A hydroxylase is located in the proximal tubule of the kidney and a variety of other tissues, including skin (keratinocytes), immune cells,[4] and bone (osteoblasts).[5] The enzyme catalyzes the hydroxylation of calcidiol to calcitriol (the bioactive form of Vitamin D):[6]

calcidiol + NADPH + H+ + O2 \rightleftharpoons calcitriol + NADP+ + H2O
calcidiol 1-monooxygenase
Identifiers
EC number 1.14.13.13
CAS number 9081-36-1
Databases
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum
Gene Ontology AmiGO / EGO

References

  1. ^ "Entrez Gene: cytochrome P450". http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=1594. 
  2. ^ Takeyama K, Kitanaka S, Sato T, Kobori M, Yanagisawa J, Kato S (September 1997). "25-Hydroxyvitamin D3 1alpha-hydroxylase and vitamin D synthesis". Science 277 (5333): 1827–30. doi:10.1126/science.277.5333.1827. PMID 9295274. 
  3. ^ Monkawa T, Yoshida T, Wakino S, Shinki T, Anazawa H, Deluca HF, Suda T, Hayashi M, Saruta T (October 1997). "Molecular cloning of cDNA and genomic DNA for human 25-hydroxyvitamin D3 1 alpha-hydroxylase". Biochem. Biophys. Res. Commun. 239 (2): 527–33. doi:10.1006/bbrc.1997.7508. PMID 9344864. 
  4. ^ Sigmundsdottir H, Pan J, Debes GF, Alt C, Habtezion A, Soler D, Butcher EC (March 2007). "DCs metabolize sunlight-induced vitamin D3 to 'program' T cell attraction to the epidermal chemokine CCL27". Nat. Immunol. 8 (3): 285–93. doi:10.1038/ni1433. PMID 17259988. http://www.biochem.wisc.edu/courses/biochem901/secure/materials/readings/08Sigmundsdottir_etal.pdf. 
  5. ^ Kogawa M, Findlay DM, Anderson PH, Ormsby R, Vincent C, Morris HA, Atkins GJ (October 2010). "Osteoclastic metabolism of 25(OH)-vitamin D3: a potential mechanism for optimization of bone resorption". Endocrinology 151 (10): 4613–25. doi:10.1210/en.2010-0334. PMID 20739402. 
  6. ^ Gray RW, Omdahl JL, Ghazarian JG, DeLuca HF (December 1972). "25-Hydroxycholecalciferol-1-hydroxylase. Subcellular location and properties". J. Biol. Chem. 247 (23): 7528–32. PMID 4404596. 

Further reading

External links