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SRD5A3

Chr 4q12

steroid 5 alpha-reductase 3

Aliases:
FLJ13352, SRD5A2L, SRD5A2L1
MANE:
ENST00000264228.9

Annotations refreshed 1 month ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • Ataxia and cerebellar anomalies - narrow panel

    BIALLELIC, autosomal or pseudoautosomal
  • Bilateral congenital or childhood onset cataracts

    BIALLELIC, autosomal or pseudoautosomal
  • Congenital disorders of glycosylation

    BIALLELIC, autosomal or pseudoautosomal
  • DDG2P

    BIALLELIC, autosomal or pseudoautosomal
  • Fetal anomalies

    BIALLELIC, autosomal or pseudoautosomal
  • Hereditary ataxia

    BIALLELIC, autosomal or pseudoautosomal
  • Hereditary ataxia with onset in adulthood

    BIALLELIC, autosomal or pseudoautosomal
  • Intellectual disability

    BIALLELIC, autosomal or pseudoautosomal

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Disease associations (Open Targets)

  • SRD5A3-congenital disorder of glycosylation

    0.83
  • Kahrizi syndrome

    0.74
  • benign prostatic hyperplasia

    0.60
  • prostate cancer

    0.56
  • prostate carcinoma

    0.55
  • androgenetic alopecia

    0.50
  • neurodegenerative disease

    0.50
  • congenital disorder of glycosylation

    0.46
  • Abnormality of the nervous system

    0.45
  • hereditary disease

    0.41

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

Protein function (UniProt)

Polyprenal reductase

Plays a key role in early steps of protein N-linked glycosylation by being involved in the conversion of polyprenol into dolichol (PubMed:20637498, PubMed:38821050). Acts as a polyprenal reductase that mediates the reduction of polyprenal into dolichal in a NADP-dependent mechanism (PubMed:38821050). Dolichols are required for the synthesis of dolichol-linked monosaccharides and the oligosaccharide precursor used for N-glycosylation (PubMed:20637498, PubMed:38821050). Also able to convert testosterone (T) into 5-alpha-dihydrotestosterone (DHT) (PubMed:17986282, PubMed:26855069)

Curated MONDO disease pages that list SRD5A3 among their top associated genes.

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.