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MTPAP

Chr 10p11.23

mitochondrial poly(A) polymerase

Aliases:
FLJ10486, SPAX4, TENT6
MANE:
ENST00000263063.9

Annotations refreshed 1 month ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • Likely inborn error of metabolism

    BIALLELIC, autosomal or pseudoautosomal
  • Mitochondrial disorders

    BIALLELIC, autosomal or pseudoautosomal
  • Possible mitochondrial disorder - nuclear genes

    BIALLELIC, autosomal or pseudoautosomal
  • Undiagnosed metabolic disorders

    BIALLELIC, autosomal or pseudoautosomal
  • Adult onset hereditary spastic paraplegia

    BIALLELIC, autosomal or pseudoautosomal
  • Childhood onset hereditary spastic paraplegia

    BIALLELIC, autosomal or pseudoautosomal
  • Fetal anomalies

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

    BIALLELIC, autosomal or pseudoautosomal

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Disease associations (Open Targets)

  • spastic ataxia 4

    0.60
  • Autosomal recessive spastic ataxia - optic atrophy - dysarthria

    0.52
  • neurodegenerative disease

    0.52
  • mitochondrial disease

    0.37
  • inborn mitochondrial metabolism disorder

    0.37
  • ovarian dysfunction

    0.28
  • spastic ataxia

    0.27
  • hereditary disease

    0.19
  • lysosomal storage disease

    0.16
  • Retinal dystrophy

    0.11

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

Protein function (UniProt)

Poly(A) RNA polymerase, mitochondrial

Polymerase that creates the 3' poly(A) tail of mitochondrial transcripts. Can use all four nucleotides, but has higher activity with ATP and UTP (in vitro). Plays a role in replication-dependent histone mRNA degradation. May be involved in the terminal uridylation of mature histone mRNAs before their degradation is initiated. Might be responsible for the creation of some UAA stop codons which are not encoded in mtDNA

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.