Defective CYP11B2 causes CMO-1 deficiency

Stable Identifier
R-HSA-5579009
Type
Pathway
Species
Homo sapiens
Synonyms
Defective CYP11B2 causes Corticosterone methyloxidase 1 deficiency
ReviewStatus
5/5
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Defective CYP11B2 causes CMO-1 deficiency
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Cytochrome P450 11B2, mitochondrial (CYP11B2 aka aldosterone hydroxylase) is an enzyme necessary for aldosterone biosynthesis via corticosterone (CORST) and 18-hydroxycorticosterone (18HCORST). Defects in CYP11B2 results in disorders of aldosterone synthesis. Corticosterone methyloxidase 1 and 2 deficiencies (CMO-1; MIM:203400 and CMO-2 deficiency; MIM:61060) are autosomal recessive disorders of aldosterone biosynthesis (Mitsuuchi et al. 1993, Bureik et al. 2002). In CMO-1 deficiency, aldosterone is undetectable in plasma, while its immediate precursor, 18HCORST, is low or normal. In CMO-2 deficiency, aldosterone can be low or normal, but at the expense of increased secretion of 18HCORST. Patients with CMO-2 deficiency have elevated plasma 18-hydroxycorticosterone/aldosterone ratios.
Literature References
PubMed ID Title Journal Year
12452430 The human steroid hydroxylases CYP1B1 and CYP11B2

Bureik, M, Bernhardt, R, Lisurek, M

Biol. Chem. 2002
8439335 Congenitally defective aldosterone biosynthesis in humans: inactivation of the P-450C18 gene (CYP11B2) due to nucleotide deletion in CMO I deficient patients

Naiki, Y, Kuribayashi, I, Miyahara, K, Hara, T, Ulick, S, Mitsuuchi, Y, Orii, T, Kawamoto, T, Toda, K, Morton, DH

Biochem. Biophys. Res. Commun. 1993
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Authored
Jassal, B  (2014-06-06)
Reviewed
Nakaki, T  (2014-11-03)
Created
Jassal, B  (2014-06-06)
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