Skip to content
GenoLensGenoLens

ALG9

Chr 11q23.1

ALG9 alpha-1,2-mannosyltransferase

MANE:
ENST00000616540.5

Annotations refreshed 1 month ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • Congenital disorders of glycosylation

    BIALLELIC, autosomal or pseudoautosomal
  • Cystic kidney disease

    BOTH monoallelic and biallelic (but BIALLELIC mutations cause a more SEVERE disease form), autosomal or pseudoautosomal
  • DDG2P

    BIALLELIC, autosomal or pseudoautosomal
  • Early onset or syndromic epilepsy

    BIALLELIC, autosomal or pseudoautosomal
  • Fetal anomalies

    BIALLELIC, autosomal or pseudoautosomal
  • Intellectual disability

    BIALLELIC, autosomal or pseudoautosomal
  • Likely inborn error of metabolism

    BIALLELIC, autosomal or pseudoautosomal
  • Skeletal dysplasia

    BIALLELIC, autosomal or pseudoautosomal

+5 more panels — install the extension to see the full list inline on any page.

Disease associations (Open Targets)

  • ALG9-congenital disorder of glycosylation

    0.82
  • ALG9-associated autosomal dominant polycystic kidney disease

    0.61
  • autosomal dominant polycystic kidney disease

    0.58
  • congenital disorder of glycosylation type I

    0.46
  • neurodegenerative disease

    0.46
  • autosomal dominant polycystic liver disease

    0.38
  • Isolated polycystic liver disease

    0.38
  • congenital disorder of glycosylation

    0.37
  • Global developmental delay

    0.37
  • cystic kidney disease

    0.37

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

Protein function (UniProt)

Alpha-1,2-mannosyltransferase ALG9

Mannosyltransferase that operates in the biosynthetic pathway of dolichol-linked oligosaccharides, the glycan precursors employed in protein asparagine (N)-glycosylation. The assembly of dolichol-linked oligosaccharides begins on the cytosolic side of the endoplasmic reticulum membrane and finishes in its lumen. The sequential addition of sugars to dolichol pyrophosphate produces dolichol-linked oligosaccharides containing fourteen sugars, including two GlcNAcs, nine mannoses and three glucoses. Once assembled, the oligosaccharide is transferred from the lipid to nascent proteins by oligosaccharyltransferases. In the lumen of the endoplasmic reticulum, catalyzes the addition of the seventh and ninth alpha-1,2-linked mannose residues to Man(6)GlcNAc(2)-PP-dolichol and Man(8)GlcNAc(2)-PP-dolichol respectively

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.