Summary

Name CYP11B2
Full Name Cytochrome P450 11B2, mitochondrial
Synonyms Aldosterone synthase, ALDOS, 1.14.15.4, 1.14.15.5, Aldosterone-synthesizing enzyme, CYPXIB2, Cytochrome P-450Aldo, Cytochrome P-450C18, Steroid 18-hydroxylase |
Primary ID P19099
Links - -
Type protein
Relations 9
Pathways Sex Hormone Biosynthesis
Inhibitors metyrapone
Function A cytochrome P450 monooxygenase that catalyzes the biosynthesis of adrenal mineralocorticoid aldosterone (PubMed:11856349, PubMed:23322723, PubMed:1594605, PubMed:9814506). Catalyzes three sequential oxidative reactions of 11-deoxycorticosterone/21-hydroxyprogesterone, namely 11-beta hydroxylation followed with two successive oxidations at C18 to yield 18-hydroxy and then 18-aldehyde derivatives, resulting in the formation of aldosterone (PubMed:11856349, PubMed:23322723, PubMed:1594605, PubMed:9814506). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate and reducing the second into a water molecule. Two electrons are provided by NADPH via a two-protein mitochondrial transfer system comprising flavoprotein FDXR (adrenodoxin/ferredoxin reductase) and nonheme iron-sulfur protein FDX1 or FDX2 (adrenodoxin/ferredoxin) (PubMed:11856349, PubMed:23322723, PubMed:1594605, PubMed:9814506).

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Relations

Regulator Mechanism target score
+ up-regulates quantity img/direct-activation.png chemical modification cortisol 0.8
Publications: 1 Organism: Homo Sapiens
Tissue: Zona Fasciculata
Pathways:Sex Hormone Biosynthesis
+ down-regulates quantity by repression img/indirect_inhibition.png transcriptional regulation CYP11B2 0.351
Publications: 1 Organism: Homo Sapiens
+ down-regulates quantity img/direct_inhibition.png chemical modification 11-deoxycortisol 0.8
Publications: 1 Organism: Homo Sapiens
Tissue: Zona Fasciculata
Pathways:Sex Hormone Biosynthesis
+ up-regulates quantity img/direct-activation.png chemical modification 18-hydroxycorticosterone 0.8
Publications: 1 Organism: Homo Sapiens
Tissue: Zona Glomerulosa
Pathways:Sex Hormone Biosynthesis
+ down-regulates quantity by repression img/indirect_inhibition.png transcriptional regulation CYP11B2 0.494
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png chemical inhibition CYP11B2 0.8
Publications: 1 Organism: In Vitro
+ up-regulates quantity img/direct-activation.png chemical modification corticosterone 0.8
Publications: 1 Organism: Homo Sapiens
Tissue: Zona Glomerulosa
Pathways:Sex Hormone Biosynthesis
+ down-regulates quantity img/direct_inhibition.png chemical modification 11-deoxycorticosterone 0.8
Publications: 1 Organism: Homo Sapiens
Tissue: Zona Glomerulosa
Pathways:Sex Hormone Biosynthesis
+ up-regulates quantity img/direct-activation.png chemical modification aldosterone 0.8
Publications: 1 Organism: Homo Sapiens
Tissue: Zona Glomerulosa
Pathways:Sex Hormone Biosynthesis