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POT1

Chr 7q31.33

protection of telomeres 1

Aliases:
hPot1, DKFZp586D211
MANE:
ENST00000357628.8

Annotations refreshed 1 month ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • Familial melanoma

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Haematological malignancies cancer susceptibility

    MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
  • Li Fraumeni Syndrome

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • DDG2P

    BIALLELIC, autosomal or pseudoautosomal

Disease associations (Open Targets)

  • tumor predisposition syndrome 3

    0.82
  • B-cell chronic lymphocytic leukemia

    0.61
  • familial melanoma

    0.60
  • Inherited cancer-predisposing syndrome

    0.57
  • hereditary neoplastic syndrome

    0.57
  • pulmonary fibrosis and/or bone marrow failure syndrome, telomere-related, 8

    0.53
  • neurodegenerative disease

    0.53
  • cerebroretinal microangiopathy with calcifications and cysts 3

    0.47
  • plasma cell myeloma

    0.46
  • lung carcinoma

    0.46

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

Protein function (UniProt)

Protection of telomeres protein 1

Component of the telomerase ribonucleoprotein (RNP) complex that is essential for the replication of chromosome termini. Is a component of the double-stranded telomeric DNA-binding TRF1 complex which is involved in the regulation of telomere length by cis-inhibition of telomerase. Also acts as a single-stranded telomeric DNA-binding protein and thus may act as a downstream effector of the TRF1 complex and may transduce information about telomere maintenance and/or length to the telomere terminus. Component of the shelterin complex (telosome) that is involved in the regulation of telomere length and protection. Shelterin associates with arrays of double-stranded TTAGGG repeats added by telomerase and protects chromosome ends; without its protective activity, telomeres are no longer hidden from the DNA damage surveillance and chromosome ends are inappropriately processed by DNA repair pathways. Binds to two or more telomeric single-stranded 5'-TTAGGG-3' repeats (G-strand) and with high specificity to a minimal telomeric single-stranded 5'-TAGGGTTAG-3' sequence. Binds telomeric single-stranded sequences internally or at proximity of a 3'-end. Its activity is TERT dependent but it does not increase TERT activity by itself. In contrast, the ACD-POT1 heterodimer enhances telomere elongation by increasing telomerase processivity

Curated MONDO disease pages that list POT1 among their top associated genes.

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.