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GMPPB

Chr 3p21.31

GDP-mannose pyrophosphorylase B

Aliases:
KIAA1851
MANE:
ENST00000308388.7

Annotations refreshed 1 month ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • Acute rhabdomyolysis

    BIALLELIC, autosomal or pseudoautosomal
  • 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
  • Congenital myaesthenic syndrome

    BIALLELIC, autosomal or pseudoautosomal
  • DDG2P

    BIALLELIC, autosomal or pseudoautosomal

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Disease associations (Open Targets)

  • autosomal recessive limb-girdle muscular dystrophy type 2T

    0.83
  • muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A14

    0.80
  • muscular dystrophy-dystroglycanopathy (congenital with intellectual disability), type B14

    0.79
  • muscle-eye-brain disease

    0.63
  • congenital muscular dystrophy with cerebellar involvement

    0.62
  • congenital muscular dystrophy with intellectual disability

    0.62
  • neurodegenerative disease

    0.53
  • hereditary disease

    0.51
  • muscular dystrophy-dystroglycanopathy

    0.51
  • Abnormality of the musculature

    0.49

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

Protein function (UniProt)

Mannose-1-phosphate guanylyltransferase catalytic subunit beta

Catalytic subunit of the GMPPA-GMPPB mannose-1-phosphate guanylyltransferase complex (PubMed:33986552). Catalyzes the formation of GDP-mannose, an essential precursor of glycan moieties of glycoproteins and glycolipids (PubMed:33986552). Can catalyze the reverse reaction in vitro (PubMed:33986552). Together with GMPPA regulates GDP-alpha-D-mannose levels (PubMed:33986552)

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.