Cytochrome P450 11B2, mitochondrial

NameCytochrome P450 11B2, mitochondrial
Synonyms
  • ALDOS
  • Aldosterone synthase
  • Aldosterone-synthesizing enzyme
  • CYPXIB2
  • Cytochrome P-450Aldo
  • Cytochrome P-450C18
  • Steroid 18-hydroxylase
Gene NameCYP11B2
OrganismHuman
Amino acid sequence
>lcl|BSEQ0017134|Cytochrome P450 11B2, mitochondrial
MALRAKAEVCVAAPWLSLQRARALGTRAARAPRTVLPFEAMPQHPGNRWLRLLQIWREQG
YEHLHLEMHQTFQELGPIFRYNLGGPRMVCVMLPEDVEKLQQVDSLHPCRMILEPWVAYR
QHRGHKCGVFLLNGPEWRFNRLRLNPDVLSPKAVQRFLPMVDAVARDFSQALKKKVLQNA
RGSLTLDVQPSIFHYTIEASNLALFGERLGLVGHSPSSASLNFLHALEVMFKSTVQLMFM
PRSLSRWISPKVWKEHFEAWDCIFQYGDNCIQKIYQELAFNRPQHYTGIVAELLLKAELS
LEAIKANSMELTAGSVDTTAFPLLMTLFELARNPDVQQILRQESLAAAASISEHPQKATT
ELPLLRAALKETLRLYPVGLFLERVVSSDLVLQNYHIPAGTLVQVFLYSLGRNAALFPRP
ERYNPQRWLDIRGSGRNFHHVPFGFGMRQCLGRRLAEAEMLLLLHHVLKHFLVETLTQED
IKMVYSFILRPGTSPLLTFRAIN
Number of residues503
Molecular Weight57559.62
Theoretical pI9.78
GO Classification
Functions
  • iron ion binding
  • heme binding
  • oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, NAD(P)H as one donor, and incorporation of one atom of oxygen
  • corticosterone 18-monooxygenase activity
  • steroid 11-beta-monooxygenase activity
Processes
  • sterol metabolic process
  • cellular response to peptide hormone stimulus
  • aldosterone biosynthetic process
  • cellular response to potassium ion
  • cortisol biosynthetic process
  • small molecule metabolic process
  • oxidation-reduction process
  • secondary metabolite biosynthetic process
  • steroid metabolic process
  • mineralocorticoid biosynthetic process
  • cellular response to hormone stimulus
  • cholesterol metabolic process
  • regulation of blood volume by renal aldosterone
  • xenobiotic metabolic process
  • potassium ion homeostasis
  • sodium ion homeostasis
  • renal water homeostasis
  • C21-steroid hormone biosynthetic process
Components
  • mitochondrion
  • mitochondrial inner membrane
General FunctionSteroid 11-beta-monooxygenase activity
Specific FunctionPreferentially catalyzes the conversion of 11-deoxycorticosterone to aldosterone via corticosterone and 18-hydroxycorticosterone.
Pfam Domain Function
Transmembrane RegionsNot Available
GenBank Protein ID35200
UniProtKB IDP19099
UniProtKB Entry NameC11B2_HUMAN
Cellular LocationMitochondrion membrane
Gene sequence
>lcl|BSEQ0017135|Cytochrome P450 11B2, mitochondrial (CYP11B2)
ATGGCACTCAGGGCAAAGGCAGAGGTGTGCGTGGCAGCGCCCTGGCTGTCCCTGCAAAGG
GCACGGGCACTGGGCACTAGAGCCGCTCGGGCCCCTAGGACGGTGCTGCCGTTTGAAGCC
ATGCCCCAGCATCCAGGCAACAGGTGGCTGAGGCTGCTGCAGATCTGGAGGGAGCAGGGT
TATGAGCACCTGCACCTGGAGATGCACCAGACCTTCCAGGAGCTGGGGCCCATTTTCAGG
TACAACTTGGGAGGACCACGCATGGTGTGTGTGATGCTGCCGGAGGATGTGGAGAAGCTG
CAACAGGTGGACAGCCTGCATCCCTGCAGGATGATCCTGGAGCCCTGGGTGGCCTACAGA
CAACATCGTGGGCACAAATGTGGCGTGTTCTTGTTGAATGGGCCTGAATGGCGCTTCAAC
CGATTGCGGCTGAACCCAGATGTGCTGTCGCCCAAGGCCGTGCAGAGGTTCCTCCCGATG
GTGGATGCAGTGGCCAGGGACTTCTCCCAGGCCCTGAAGAAGAAGGTGCTGCAGAACGCC
CGGGGGAGCCTGACCCTGGACGTCCAGCCCAGCATCTTCCACTACACCATAGAAGCCAGC
AACTTAGCTCTTTTTGGAGAGCGGCTGGGCCTGGTTGGCCACAGCCCCAGTTCTGCCAGC
CTGAACTTCCTCCATGCCCTGGAGGTCATGTTCAAATCCACCGTCCAGCTCATGTTCATG
CCCAGGAGCCTGTCTCGCTGGATCAGCCCCAAGGTGTGGAAGGAGCACTTTGAGGCCTGG
GACTGCATCTTCCAGTACGGTGACAACTGTATCCAGAAAATCTACCAGGAACTGGCCTTC
AACCGCCCTCAACACTACACAGGCATCGTGGCGGAGCTCCTGTTGAAGGCGGAACTGTCA
CTAGAAGCCATCAAGGCCAACTCTATGGAACTCACTGCAGGGAGCGTGGACACGACAGCG
TTTCCCTTGCTGATGACGCTCTTTGAGCTGGCTCGGAACCCCGACGTGCAGCAGATCCTG
CGCCAGGAGAGCCTGGCCGCCGCAGCCAGCATCAGTGAACATCCCCAGAAGGCAACCACC
GAGCTGCCCTTGCTGCGGGCGGCCCTCAAGGAGACCTTGCGGCTCTACCCTGTGGGTCTG
TTTTTGGAGCGAGTGGTGAGCTCAGACTTGGTGCTTCAGAACTACCACATCCCAGCTGGG
ACATTGGTACAGGTTTTCCTCTACTCGCTGGGTCGCAATGCCGCCTTGTTCCCGAGGCCT
GAGCGGTATAATCCCCAGCGCTGGCTAGACATCAGGGGCTCCGGCAGGAACTTCCACCAC
GTGCCCTTTGGCTTTGGCATGCGCCAGTGCCTCGGGCGGCGCCTGGCAGAGGCAGAGATG
CTGCTGCTGCTGCACCACGTGCTGAAGCACTTCCTGGTGGAGACACTAACTCAAGAGGAC
ATAAAGATGGTCTACAGCTTCATATTGAGGCCTGGCACGTCCCCCCTCCTCACTTTCAGA
GCGATTAACTAG
GenBank Gene IDX54741
GeneCard IDNot Available
GenAtlas IDNot Available
HGNC IDHGNC:2592
Chromosome Location8
Locus8q21-q22
References
  1. Mornet E, Dupont J, Vitek A, White PC: Characterization of two genes encoding human steroid 11 beta-hydroxylase (P-450(11) beta). J Biol Chem. 1989 Dec 15;264(35):20961-7. 2592361
  2. Kawainoto T, Mitsuuchi Y, Ohnishi T, Ichikawa Y, Yokoyama Y, Sumimoto H, Toda K, Miyahara K, Kuribayashi I, Nakao K, et al.: Cloning and expression of a cDNA for human cytochrome P-450aldo as related to primary aldosteronism. Biochem Biophys Res Commun. 1990 Nov 30;173(1):309-16. 2256920
  3. Strushkevich N, Gilep AA, Shen L, Arrowsmith CH, Edwards AM, Usanov SA, Park HW: Structural insights into aldosterone synthase substrate specificity and targeted inhibition. Mol Endocrinol. 2013 Feb;27(2):315-24. doi: 10.1210/me.2012-1287. Epub 2013 Jan 15. 23322723
  4. Pascoe L, Curnow KM, Slutsker L, Rosler A, White PC: Mutations in the human CYP11B2 (aldosterone synthase) gene causing corticosterone methyloxidase II deficiency. Proc Natl Acad Sci U S A. 1992 Jun 1;89(11):4996-5000. 1594605
  5. Mitsuuchi Y, Kawamoto T, Naiki Y, Miyahara K, Toda K, Kuribayashi I, Orii T, Yasuda K, Miura K, Nakao K, et al.: Congenitally defective aldosterone biosynthesis in humans: the involvement of point mutations of the P-450C18 gene (CYP11B2) in CMO II deficient patients. Biochem Biophys Res Commun. 1992 Jan 31;182(2):974-9. 1346492
  6. Mitsuuchi Y, Kawamoto T, Miyahara K, Ulick S, Morton DH, Naiki Y, Kuribayashi I, Toda K, Hara T, Orii T, et al.: Congenitally defective aldosterone biosynthesis in humans: inactivation of the P-450C18 gene (CYP11B2) due to nucleotide deletion in CMO I deficient patients. Biochem Biophys Res Commun. 1993 Feb 15;190(3):864-9. 8439335
  7. Nomoto S, Massa G, Mitani F, Ishimura Y, Miyahara K, Toda K, Nagano I, Yamashiro T, Ogoshi S, Fukata J, Onishi S, Hashimoto K, Doi Y, Imura H, Shizuta Y: CMO I deficiency caused by a point mutation in exon 8 of the human CYP11B2 gene encoding steroid 18-hydroxylase (P450C18). Biochem Biophys Res Commun. 1997 May 19;234(2):382-5. 9177280
  8. Peter M, Bunger K, Solyom J, Sippell WG: Mutation THR-185 ILE is associated with corticosterone methyl oxidase deficiency type II. Eur J Pediatr. 1998 May;157(5):378-81. 9625333
  9. Portrat-Doyen S, Tourniaire J, Richard O, Mulatero P, Aupetit-Faisant B, Curnow KM, Pascoe L, Morel Y: Isolated aldosterone synthase deficiency caused by simultaneous E198D and V386A mutations in the CYP11B2 gene. J Clin Endocrinol Metab. 1998 Nov;83(11):4156-61. 9814506
  10. Tamaki S, Iwai N, Tsujita Y, Kinoshita M: Genetic polymorphism of CYP11B2 gene and hypertension in Japanese. Hypertension. 1999 Jan;33(1 Pt 2):266-70. 9931115
  11. Cargill M, Altshuler D, Ireland J, Sklar P, Ardlie K, Patil N, Shaw N, Lane CR, Lim EP, Kalyanaraman N, Nemesh J, Ziaugra L, Friedland L, Rolfe A, Warrington J, Lipshutz R, Daley GQ, Lander ES: Characterization of single-nucleotide polymorphisms in coding regions of human genes. Nat Genet. 1999 Jul;22(3):231-8. 10391209
  12. Halushka MK, Fan JB, Bentley K, Hsie L, Shen N, Weder A, Cooper R, Lipshutz R, Chakravarti A: Patterns of single-nucleotide polymorphisms in candidate genes for blood-pressure homeostasis. Nat Genet. 1999 Jul;22(3):239-47. 10391210
  13. Kayes-Wandover KM, Schindler RE, Taylor HC, White PC: Type 1 aldosterone synthase deficiency presenting in a middle-aged man. J Clin Endocrinol Metab. 2001 Mar;86(3):1008-12. 11238478
  14. Dunlop FM, Crock PA, Montalto J, Funder JW, Curnow KM: A compound heterozygote case of type II aldosterone synthase deficiency. J Clin Endocrinol Metab. 2003 Jun;88(6):2518-26. 12788848