Name25-hydroxyvitamin D-1 alpha hydroxylase, mitochondrial
Synonyms
  • 1.14.13.13
  • 25-hydroxyvitamin D(3) 1-alpha-hydroxylase
  • 25-OHD-1 alpha-hydroxylase
  • Calcidiol 1-monooxygenase
  • CYP1ALPHA
  • CYP27B
  • Cytochrome p450 27B1
  • Cytochrome P450 subfamily XXVIIB polypeptide 1
  • Cytochrome P450C1 alpha
  • Cytochrome P450VD1-alpha
  • VD3 1A hydroxylase
Gene NameCYP27B1
OrganismHuman
Amino acid sequence
>lcl|BSEQ0010308|25-hydroxyvitamin D-1 alpha hydroxylase, mitochondrial
MTQTLKYASRVFHRVRWAPELGASLGYREYHSARRSLADIPGPSTPSFLAELFCKGGLSR
LHELQVQGAAHFGPVWLASFGTVRTVYVAAPALVEELLRQEGPRPERCSFSPWTEHRRCR
QRACGLLTAEGEEWQRLRSLLAPLLLRPQAAARYAGTLNNVVCDLVRRLRRQRGRGTGPP
ALVRDVAGEFYKFGLEGIAAVLLGSRLGCLEAQVPPDTETFIRAVGSVFVSTLLTMAMPH
WLRHLVPGPWGRLCRDWDQMFAFAQRHVERREAEAAMRNGGQPEKDLESGAHLTHFLFRE
ELPAQSILGNVTELLLAGVDTVSNTLSWALYELSRHPEVQTALHSEITAALSPGSSAYPS
ATVLSQLPLLKAVVKEVLRLYPVVPGNSRVPDKDIHVGDYIIPKNTLVTLCHYATSRDPA
QFPEPNSFRPARWLGEGPTPHPFASLPFGFGKRSCMGRRLAELELQMALAQILTHFEVQP
EPGAAPVRPKTRTVLVPERSINLQFLDR
Number of residues508
Molecular Weight56503.475
Theoretical pI9.39
GO Classification
Functions
  • iron ion binding
  • heme binding
  • calcidiol 1-monooxygenase activity
Processes
  • calcium ion homeostasis
  • decidualization
  • negative regulation of calcidiol 1-monooxygenase activity
  • small molecule metabolic process
  • positive regulation of keratinocyte differentiation
  • positive regulation of vitamin D 24-hydroxylase activity
  • steroid metabolic process
  • positive regulation of vitamin D receptor signaling pathway
  • negative regulation of cell proliferation
  • vitamin D catabolic process
  • vitamin metabolic process
  • vitamin D metabolic process
  • response to estrogen
  • response to lipopolysaccharide
  • xenobiotic metabolic process
  • G1 to G0 transition
  • bone mineralization
  • negative regulation of cell growth
  • response to interferon-gamma
  • response to vitamin D
  • calcium ion transport
  • regulation of bone mineralization
  • calcitriol biosynthetic process from calciol
Components
  • mitochondrial outer membrane
  • cytoplasm
  • mitochondrion
General FunctionIron ion binding
Specific FunctionCatalyzes the conversion of 25-hydroxyvitamin D3 (25(OH)D) to 1-alpha,25-dihydroxyvitamin D3 (1,25(OH)2D) plays an important role in normal bone growth, calcium metabolism, and tissue differentiation.
Pfam Domain Function
Transmembrane RegionsNot Available
GenBank Protein ID2612976
UniProtKB IDO15528
UniProtKB Entry NameCP27B_HUMAN
Cellular LocationMitochondrion membrane
Gene sequence
>lcl|BSEQ0010309|25-hydroxyvitamin D-1 alpha hydroxylase, mitochondrial (CYP27B1)
ATGACCCAGACCCTCAAGTACGCCTCCAGAGTGTTCCATCGCGTCCGCTGGGCGCCCGAG
TTGGGCGCCTCCCTAGGCTACCGAGAGTACCACTCAGCACGCCGGAGCTTGGCAGACATC
CCAGGCCCCTCTACGCCCAGCTTTCTGGCCGAACTTTTCTGCAAGGGGGGGCTGTCGAGG
CTACACGAGCTGCAGGTGCAGGGCGCCGCGCACTTCGGGCCGGTGTGGCTAGCCAGCTTT
GGGACAGTGCGCACCGTGTACGTGGCTGCCCCTGCACTCGTCGAGGAGCTGCTGCGACAG
GAGGGACCCCGGCCCGAGCGCTGCAGCTTCTCGCCCTGGACGGAGCACCGCCGCTGCCGC
CAGCGGGCTTGCGGACTGCTCACTGCGGAAGGCGAAGAATGGCAAAGGCTCCGCAGTCTC
CTGGCCCCGCTCCTCCTCCGGCCTCAAGCGGCCGCCCGCTACGCCGGAACCCTGAACAAC
GTAGTCTGCGACCTTGTGCGGCGTCTGAGGCGCCAGCGGGGACGTGGCACGGGGCCGCCC
GCCCTGGTTCGGGACGTGGCGGGGGAATTTTACAAGTTCGGACTGGAAGGCATCGCCGCG
GTTCTGCTCGGCTCGCGCTTGGGCTGCCTGGAGGCTCAAGTGCCACCCGACACGGAGACC
TTCATCCGCGCTGTGGGCTCGGTGTTTGTGTCCACGCTGTTGACCATGGCGATGCCCCAC
TGGCTGCGCCACCTTGTGCCTGGGCCCTGGGGCCGCCTCTGCCGAGACTGGGACCAGATG
TTTGCATTTGCTCAGAGGCACGTGGAGCGGCGAGAGGCAGAGGCAGCCATGAGGAACGGA
GGACAGCCCGAGAAGGACCTGGAGTCTGGGGCGCACCTGACCCACTTCCTGTTCCGGGAA
GAGTTGCCTGCCCAGTCCATCCTGGGAAATGTGACAGAGTTGCTATTGGCGGGAGTGGAC
ACGGTGTCCAACACGCTCTCTTGGGCTCTGTATGAGCTCTCCCGGCACCCCGAAGTCCAG
ACAGCACTCCACTCAGAGATCACAGCTGCCCTGAGCCCTGGCTCCAGTGCCTACCCCTCA
GCCACTGTTCTGTCCCAGCTGCCCCTGCTGAAGGCGGTGGTCAAGGAAGTGCTAAGACTG
TACCCTGTGGTACCTGGAAATTCTCGTGTCCCAGACAAAGACATTCATGTGGGTGACTAT
ATTATCCCCAAAAATACGCTGGTCACTCTGTGTCACTATGCCACTTCAAGGGACCCTGCC
CAGTTCCCAGAGCCAAATTCTTTTCGTCCAGCTCGCTGGCTGGGGGAGGGTCCCACCCCC
CACCCATTTGCATCTCTTCCCTTTGGCTTTGGCAAGCGCAGCTGTATGGGGAGACGCCTG
GCAGAGCTTGAATTGCAAATGGCTTTGGCCCAGATCCTAACACATTTTGAGGTGCAGCCT
GAGCCAGGTGCGGCCCCAGTTAGACCCAAGACCCGGACTGTCCTGGTACCTGAAAGGAGC
ATCAACCTACAGTTTTTGGACAGATAG
GenBank Gene IDAF027152
GeneCard IDNot Available
GenAtlas IDCYP27B1
HGNC IDHGNC:2606
Chromosome Location12
Locus12q13.1-q13.3
References
  1. Fu GK, Portale AA, Miller WL: Complete structure of the human gene for the vitamin D 1alpha-hydroxylase, P450c1alpha. DNA Cell Biol. 1997 Dec;16(12):1499-507. 9428799
  2. Monkawa T, Yoshida T, Wakino S, Shinki T, Anazawa H, Deluca HF, Suda T, Hayashi M, Saruta T: Molecular cloning of cDNA and genomic DNA for human 25-hydroxyvitamin D3 1 alpha-hydroxylase. Biochem Biophys Res Commun. 1997 Oct 20;239(2):527-33. 9344864
  3. Fu GK, Lin D, Zhang MY, Bikle DD, Shackleton CH, Miller WL, Portale AA: Cloning of human 25-hydroxyvitamin D-1 alpha-hydroxylase and mutations causing vitamin D-dependent rickets type 1. Mol Endocrinol. 1997 Dec;11(13):1961-70. 9415400
  4. Huang DC, Papavasiliou V, Rhim JS, Horst RL, Kremer R: Targeted disruption of the 25-hydroxyvitamin D3 1alpha-hydroxylase gene in ras-transformed keratinocytes demonstrates that locally produced 1alpha,25-dihydroxyvitamin D3 suppresses growth and induces differentiation in an autocrine fashion. Mol Cancer Res. 2002 Nov;1(1):56-67. 12496369
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  7. Kitanaka S, Takeyama K, Murayama A, Sato T, Okumura K, Nogami M, Hasegawa Y, Niimi H, Yanagisawa J, Tanaka T, Kato S: Inactivating mutations in the 25-hydroxyvitamin D3 1alpha-hydroxylase gene in patients with pseudovitamin D-deficiency rickets. N Engl J Med. 1998 Mar 5;338(10):653-61. 9486994
  8. Wang JT, Lin CJ, Burridge SM, Fu GK, Labuda M, Portale AA, Miller WL: Genetics of vitamin D 1alpha-hydroxylase deficiency in 17 families. Am J Hum Genet. 1998 Dec;63(6):1694-702. 9837822
  9. Smith SJ, Rucka AK, Berry JL, Davies M, Mylchreest S, Paterson CR, Heath DA, Tassabehji M, Read AP, Mee AP, Mawer EB: Novel mutations in the 1alpha-hydroxylase (P450c1) gene in three families with pseudovitamin D-deficiency rickets resulting in loss of functional enzyme activity in blood-derived macrophages. J Bone Miner Res. 1999 May;14(5):730-9. 10320521
  10. Kitanaka S, Murayama A, Sakaki T, Inouye K, Seino Y, Fukumoto S, Shima M, Yukizane S, Takayanagi M, Niimi H, Takeyama K, Kato S: No enzyme activity of 25-hydroxyvitamin D3 1alpha-hydroxylase gene product in pseudovitamin D deficiency rickets, including that with mild clinical manifestation. J Clin Endocrinol Metab. 1999 Nov;84(11):4111-7. 10566658
  11. Wang X, Zhang MY, Miller WL, Portale AA: Novel gene mutations in patients with 1alpha-hydroxylase deficiency that confer partial enzyme activity in vitro. J Clin Endocrinol Metab. 2002 Jun;87(6):2424-30. 12050193