1,25-dihydroxyvitamin D(3) 24-hydroxylase, mitochondrial

Name1,25-dihydroxyvitamin D(3) 24-hydroxylase, mitochondrial
Synonyms
  • 1.14.13.126
  • 24-OHase
  • CYP24
  • Cytochrome P450 24A1
  • Cytochrome P450-CC24
Gene NameCYP24A1
OrganismHuman
Amino acid sequence
>lcl|BSEQ0004416|1,25-dihydroxyvitamin D(3) 24-hydroxylase, mitochondrial
MSSPISKSRSLAAFLQQLRSPRQPPRLVTSTAYTSPQPREVPVCPLTAGGETQNAAALPG
PTSWPLLGSLLQILWKGGLKKQHDTLVEYHKKYGKIFRMKLGSFESVHLGSPCLLEALYR
TESAYPQRLEIKPWKAYRDYRKEGYGLLILEGEDWQRVRSAFQKKLMKPGEVMKLDNKIN
EVLADFMGRIDELCDERGHVEDLYSELNKWSFESICLVLYEKRFGLLQKNAGDEAVNFIM
AIKTMMSTFGRMMVTPVELHKSLNTKVWQDHTLAWDTIFKSVKACIDNRLEKYSQQPSAD
FLCDIYHQNRLSKKELYAAVTELQLAAVETTANSLMWILYNLSRNPQVQQKLLKEIQSVL
PENQVPRAEDLRNMPYLKACLKESMRLTPSVPFTTRTLDKATVLGEYALPKGTVLMLNTQ
VLGSSEDNFEDSSQFRPERWLQEKEKINPFAHLPFGVGKRMCIGRRLAELQLHLALCWIV
RKYDIQATDNEPVEMLHSGTLVPSRELPIAFCQR
Number of residues514
Molecular Weight58874.695
Theoretical pI8.99
GO Classification
Functions
  • oxidoreductase activity
  • iron ion binding
  • 1-alpha,25-dihydroxyvitamin D3 24-hydroxylase activity
  • heme binding
  • 25-hydroxycholecalciferol-24-hydroxylase activity
Processes
  • oxidation-reduction process
  • steroid metabolic process
  • vitamin metabolic process
  • xenobiotic metabolic process
  • response to vitamin D
  • vitamin D catabolic process
  • vitamin D metabolic process
  • vitamin D receptor signaling pathway
  • small molecule metabolic process
  • osteoblast differentiation
Components
  • mitochondrion
  • nucleus
  • mitochondrial inner membrane
  • plasma membrane
  • nucleoplasm
General FunctionOxidoreductase activity
Specific FunctionHas a role in maintaining calcium homeostasis. Catalyzes the NADPH-dependent 24-hydroxylation of calcidiol (25-hydroxyvitamin D(3)) and calcitriol (1-alpha,25-dihydroxyvitamin D(3)). The enzyme can perform up to 6 rounds of hydroxylation of calcitriol leading to calcitroic acid. It also shows 23-hydroxylating activity leading to 1-alpha,25-dihydroxyvitamin D(3)-26,23-lactone as end product.
Pfam Domain Function
Transmembrane RegionsNot Available
GenBank Protein ID306704
UniProtKB IDQ07973
UniProtKB Entry NameCP24A_HUMAN
Cellular LocationMitochondrion
Gene sequence
>lcl|BSEQ0016728|1,25-dihydroxyvitamin D(3) 24-hydroxylase, mitochondrial (CYP24A1)
ATGAGCTCCCCCATCAGCAAGAGCCGCTCGCTTGCCGCCTTCCTGCAGCAGCTGCGCAGT
CCGAGGCAGCCCCCGAGACTGGTGACATCTACGGCGTACACGTCCCCTCAGCCGCGAGAG
GTGCCAGTCTGCCCGCTGACAGCTGGTGGCGAGACTCAGAACGCGGCCGCCCTGCCGGGC
CCCACCAGCTGGCCACTGCTGGGCAGCCTGCTGCAGATTCTCTGGAAAGGGGGTCTCAAG
AAACAGCACGACACCCTGGTGGAGTACCACAAGAAGTATGGCAAGATTTTCCGCATGAAG
TTGGGTTCCTTTGAGTCGGTGCACCTGGGCTCGCCATGCCTGCTGGAAGCGCTGTACCGC
ACCGAGAGCGCGTACCCGCAGCGGCTGGAGATCAAACCGTGGAAGGCCTATCGCGACTAC
CGCAAAGAAGGCTACGGGCTGCTGATCCTGGAAGGGGAAGACTGGCAGCGGGTCCGGAGT
GCCTTTCAAAAGAAACTAATGAAACCAGGGGAAGTGATGAAGCTGGACAACAAAATCAAT
GAGGTCTTGGCCGATTTTATGGGCAGAATAGATGAGCTCTGTGATGAAAGAGGCCACGTT
GAAGACTTGTACAGCGAACTGAACAAATGGTCGTTTGAAAGTATCTGCCTCGTGTTGTAT
GAGAAGAGATTTGGGCTTCTCCAGAAGAATGCAGGGGATGAAGCTGTGAACTTCATCATG
GCCATCAAAACAATGATGAGCACGTTTGGGAGGATGATGGTCACTCCAGTCGAGCTGCAC
AAGAGCCTCAACACCAAGGTCTGGCAGGACCACACTCTGGCCTGGGACACCATTTTCAAA
TCAGTCAAAGCTTGTATCGACAACCGGTTAGAGAAGTATTCTCAGCAGCCTAGTGCAGAT
TTCCTTTGTGACATTTATCACCAGAATCGGCTTTCAAAGAAAGAATTGTATGCTGCTGTC
ACAGAGCTCCAGCTGGCTGCGGTGGAAACGACAGCAAACAGTCTAATGTGGATTCTCTAC
AATTTATCCCGTAATCCCCAAGTGCAACAAAAGCTTCTTAAGGAAATTCAAAGTGTATTA
CCTGAGAATCAGGTGCCACGGGCAGAAGATTTGAGGAATATGCCGTATTTAAAAGCCTGT
CTGAAAGAATCTATGAGGCTTACGCCGAGTGTACCATTTACAACTCGGACTCTTGACAAG
GCAACAGTTCTGGGTGAATATGCTTTACCCAAAGGAACAGTGCTCATGCTAAATACCCAG
GTGTTGGGATCCAGTGAAGACAATTTTGAAGATTCAAGTCAGTTTAGACCTGAACGTTGG
CTTCAGGAGAAGGAAAAAATTAATCCTTTTGCGCATCTTCCATTTGGCGTTGGAAAAAGA
ATGTGCATTGGTCGCCGATTAGCAGAGCTTCAACTGCATTTGGCTCTTTGTTGGATTGTC
CGCAAATACGACATCCAGGCCACAGACAATGAGCCTGTTGAGATGCTACACTCAGGCACC
CTGGTGCCCAGCCGGGAACTCCCCATCGCGTTTTGCCAGCGATAA
GenBank Gene IDL13286
GeneCard IDNot Available
GenAtlas IDCYP24A1
HGNC IDHGNC:2602
Chromosome Location20
Locus20q13
References
  1. Chen KS, Prahl JM, DeLuca HF: Isolation and expression of human 1,25-dihydroxyvitamin D3 24-hydroxylase cDNA. Proc Natl Acad Sci U S A. 1993 May 15;90(10):4543-7. 8506296
  2. Ren S, Nguyen L, Wu S, Encinas C, Adams JS, Hewison M: Alternative splicing of vitamin D-24-hydroxylase: a novel mechanism for the regulation of extrarenal 1,25-dihydroxyvitamin D synthesis. J Biol Chem. 2005 May 27;280(21):20604-11. Epub 2005 Mar 23. 15788398
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  5. Chen KS, DeLuca HF: Cloning of the human 1 alpha,25-dihydroxyvitamin D-3 24-hydroxylase gene promoter and identification of two vitamin D-responsive elements. Biochim Biophys Acta. 1995 Jul 25;1263(1):1-9. 7632726
  6. Labuda M, Lemieux N, Tihy F, Prinster C, Glorieux FH: Human 25-hydroxyvitamin D 24-hydroxylase cytochrome P450 subunit maps to a different chromosomal location than that of pseudovitamin D-deficient rickets. J Bone Miner Res. 1993 Nov;8(11):1397-406. 8266831
  7. Sakaki T, Kagawa N, Yamamoto K, Inouye K: Metabolism of vitamin D3 by cytochromes P450. Front Biosci. 2005 Jan 1;10:119-34. Print 2005 Jan 1. 15574355
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