Summary

Name CYP11B1
Full Name Cytochrome P450 11B1, mitochondrial
Synonyms CYPXIB1, Cytochrome P-450c11, Cytochrome P450C11, Steroid 11-beta-hydroxylase, 1.14.15.4 | S11BH
Primary ID P15538
Links - -
Type protein
Relations 6
Pathways Sex Hormone Biosynthesis
Inhibitors metyrapone
Function A cytochrome P450 monooxygenase involved in the biosynthesis of adrenal corticoids (PubMed:18215163). Catalyzes the hydroxylation of carbon hydrogen bond at 11-beta position of 11-deoxycortisol and 11-deoxycorticosterone/21-hydroxyprogesterone yielding cortisol or corticosterone, respectively (PubMed:18215163). 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:18215163).

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Relations

Regulator Mechanism target score
+ up-regulates quantity img/direct-activation.png chemical modification corticosterone 0.8
Publications: 1 Organism: Homo Sapiens
Tissue: Zona Glomerulosa
Pathways:Sex Hormone Biosynthesis
+ up-regulates quantity by expression img/indirect-activation.png transcriptional regulation CYP11B1 0.353
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png chemical inhibition CYP11B1 0.8
Publications: 1 Organism: In Vitro
+ 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
+ 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 cortisol 0.8
Publications: 1 Organism: Homo Sapiens
Tissue: Zona Fasciculata
Pathways:Sex Hormone Biosynthesis