Skip to content
GenoLensGenoLens

CYP11A1

Chr 15q24.1

cytochrome P450 family 11 subfamily A member 1

Aliases:
P450SCC
MANE:
ENST00000268053.11

Annotations refreshed 9 hours ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • Congenital adrenal hypoplasia

    MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
  • Differences in sex development

    BOTH monoallelic and biallelic, autosomal or pseudoautosomal
  • Fetal anomalies

    BOTH monoallelic and biallelic, autosomal or pseudoautosomal

Disease associations (Open Targets)

  • 46,XY disorder of sex development - adrenal insufficiency due to CYP11A1 deficiency

    0.80
  • Congenital adrenal insufficiency with 46, XY sex reversal OR 46,XY disorder of sex development-adrenal insufficiency due to CYP11A1 deficiency

    0.79
  • adrenal cortex carcinoma

    0.52
  • Cushing syndrome

    0.49
  • neoplasm

    0.49
  • classic congenital adrenal hyperplasia due to 21-hydroxylase deficiency

    0.46
  • congenital adrenal hyperplasia

    0.46
  • inherited isolated adrenal insufficiency due to partial CYP11A1 deficiency

    0.38
  • adrenal cortex neoplasm

    0.37
  • adrenal gland hyperfunction

    0.37

Score is the Open Targets composite evidence score (0-1). Higher = stronger gene-disease association.

Protein function (UniProt)

Cholesterol side-chain cleavage enzyme, mitochondrial

A cytochrome P450 monooxygenase that catalyzes the side-chain hydroxylation and cleavage of cholesterol to pregnenolone, the precursor of most steroid hormones (PubMed:21636783). Catalyzes three sequential oxidation reactions of cholesterol, namely the hydroxylation at C22 followed with the hydroxylation at C20 to yield 20R,22R-hydroxycholesterol that is further cleaved between C20 and C22 to yield the C21-steroid pregnenolone and 4-methylpentanal (PubMed:21636783). 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:21636783)

Data sources: HGNC (CC BY 4.0), AlphaFold (CC BY 4.0, Jumper et al. Nature 2021), Genomics England PanelApp (CC BY 4.0), ClinGen, Open Targets (CC0), UniProt.

Not for sole clinical decision-making. Always verify against primary sources.