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A nuclear telomere cap complex that is formed by the association of telomeric ssDNA- and dsDNA-binding proteins with telomeric DNA, and is involved in telomere protection and recruitment of telomerase. The complex contains TRF1, TRF2, POT1, RAP1, TIN2 and TPP1 in mammalian cells, and Pot1, Tpz1, Ccq1, Poz1, and Rap1 in Schizosaccharomyces. Taz1 and Rap1 (or their mammalian equivalents) form a dsDNA-binding subcomplex, Pot1 and Tpz1 form an ssDNA-binding subcomplex, and the two subcomplexes are bridged by Poz1. A complex of DNA and protein located at the end of a linear chromosome that protects and stabilizes a linear chromosome. Any constituent part of a nuclear chromosome, a chromosome found in the nucleus of a eukaryotic cell. The terminal region of a linear chromosome in the nucleus that includes the telomeric DNA repeats and associated proteins. A complex of DNA and protein located at the end of a linear chromosome in the nucleus that protects and stabilizes a linear chromosome.

View Gene Ontology (GO) Term

GO TERM SUMMARY

Name: telosome
Acc: GO:0070187
Aspect: Cellular Component
Desc: A nuclear telomere cap complex that is formed by the association of telomeric ssDNA- and dsDNA-binding proteins with telomeric DNA, and is involved in telomere protection and recruitment of telomerase. The complex contains TRF1, TRF2, POT1, RAP1, TIN2 and TPP1 in mammalian cells, and Pot1, Tpz1, Ccq1, Poz1, and Rap1 in Schizosaccharomyces. Taz1 and Rap1 (or their mammalian equivalents) form a dsDNA-binding subcomplex, Pot1 and Tpz1 form an ssDNA-binding subcomplex, and the two subcomplexes are bridged by Poz1.
Synonyms:
  • Pot1 complex
  • shelterin complex
  • Pot1-Tpz1 complex
Proteins in PDR annotated with:
   This term: 4 [Search]
   Term or descendants: 4 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0070187 - telosome (interactive image map)

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