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POMGNT1

Chr 1p34.1

protein O-linked mannose N-acetylglucosaminyltransferase 1 (beta 1,2-)

Aliases:
FLJ20277, MGAT1.2, LGMD2O
MANE:
ENST00000371984.8

Annotations refreshed 1 month ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • Arthrogryposis

    BIALLELIC, autosomal or pseudoautosomal
  • Ataxia and cerebellar anomalies - narrow panel

    BIALLELIC, autosomal or pseudoautosomal
  • Cerebellar hypoplasia

    BIALLELIC, autosomal or pseudoautosomal
  • Congenital disorders of glycosylation

    BIALLELIC, autosomal or pseudoautosomal
  • Congenital muscular dystrophy

    BIALLELIC, autosomal or pseudoautosomal
  • DDG2P

    BIALLELIC, autosomal or pseudoautosomal
  • Early onset or syndromic epilepsy

    BIALLELIC, autosomal or pseudoautosomal
  • Fetal anomalies

    BIALLELIC, autosomal or pseudoautosomal

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Disease associations (Open Targets)

  • muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A3

    0.83
  • autosomal recessive limb-girdle muscular dystrophy type 2O

    0.80
  • muscular dystrophy-dystroglycanopathy (congenital with intellectual disability), type B3

    0.79
  • retinitis pigmentosa 76

    0.77
  • muscle-eye-brain disease

    0.65
  • retinitis pigmentosa

    0.64
  • autosomal recessive limb-girdle muscular dystrophy

    0.62
  • Congenital muscular alpha-dystroglycanopathy with brain and eye anomalies

    0.58
  • myopathy caused by variation in POMGNT1

    0.58
  • muscular dystrophy-dystroglycanopathy

    0.56

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

Protein function (UniProt)

Protein O-linked-mannose beta-1,2-N-acetylglucosaminyltransferase 1

Participates in O-mannosyl glycosylation by catalyzing the addition of N-acetylglucosamine to O-linked mannose on glycoproteins (PubMed:11709191, PubMed:27493216, PubMed:28512129). Catalyzes the synthesis of the GlcNAc(beta1-2)Man(alpha1-)O-Ser/Thr moiety on alpha-dystroglycan and other O-mannosylated proteins, providing the necessary basis for the addition of further carbohydrate moieties (PubMed:11709191, PubMed:27493216). Is specific for alpha linked terminal mannose and does not have MGAT3, MGAT4, MGAT5, MGAT7 or MGAT8 activity

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.