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MAN1B1

Chr 9q34.3

mannosidase alpha class 1B member 1

Aliases:
MANA-ER, MRT15, ERManI, ERMan1
MANE:
ENST00000371589.9

Annotations refreshed 10 hours ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • Congenital disorders of glycosylation

    BIALLELIC, autosomal or pseudoautosomal
  • DDG2P

    BIALLELIC, autosomal or pseudoautosomal
  • Intellectual disability

    BIALLELIC, autosomal or pseudoautosomal
  • Likely inborn error of metabolism

    BIALLELIC, autosomal or pseudoautosomal
  • Undiagnosed metabolic disorders

    BIALLELIC, autosomal or pseudoautosomal
  • Fetal anomalies

    BIALLELIC, autosomal or pseudoautosomal
  • Childhood onset dystonia, chorea or related movement disorder

Disease associations (Open Targets)

  • Rafiq syndrome

    0.79
  • autosomal recessive non-syndromic intellectual disability

    0.65
  • X-linked non-syndromic intellectual disability

    0.53
  • hereditary disease

    0.51
  • MAN1B1-congenital disorder of glycosylation

    0.46
  • COVID-19

    0.37
  • neurodegenerative disease

    0.22
  • hepatocellular carcinoma

    0.09
  • Hyperhidrosis

    0.09
  • urinary bladder carcinoma

    0.08

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

Protein function (UniProt)

Endoplasmic reticulum mannosyl-oligosaccharide 1,2-alpha-mannosidase

Involved in glycoprotein quality control targeting of misfolded glycoproteins for degradation. It primarily trims a single alpha-1,2-linked mannose residue from Man(9)GlcNAc(2) to produce Man(8)GlcNAc(2), but at high enzyme concentrations, as found in the ER quality control compartment (ERQC), it further trims the carbohydrates to Man(5-6)GlcNAc(2)

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.