Specialist responses at telomeres
نویسندگان
چکیده
منابع مشابه
Telomeres at a glance.
The linearity of chromosomes creates two major problems for eukaryotic cells: the end-replication problem and the endprotection problem. The end-replication problem stems from the inherent inability of the replication machinery to fully duplicate linear templates. The endprotection problem refers to the propensity of linear chromosome ends to be recognized as DNA double-strand breaks (DSBs). Bo...
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How telomerase and telomeres are brought together to alleviate telomere shortening and preserve genome integrity in the cell remains incompletely understood. A study in The EMBO Journal now identifies HOT1 as a direct telomere repeat binding protein that contributes to telomerase-mediated telomere elongation, likely by bridging telomere and telomerase interactions. In contrast to the usually ci...
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I n the past two decades, intense efforts have been devoted to uncovering the mechanisms responsible for the maintenance of telomeres in eukaryotic cells. These efforts have led to the identification of an unusual reverse transcriptase (RT), named telomerase, that uses an integral RNA subunit as template to synthesize a short reiterated sequence at the ends of eukaryotic chromosomes (Fig. 1A) (...
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The proliferative potential of eukaryotic cells is critically dependent upon the maintenance of functional telomeres, the protein-DNA complexes that cap the ends of chromosomes. A paper published in this issue of Aging describes that the telomere protein tankyrase 1 regulates DNA damage responses at telomeres.
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ژورنال
عنوان ژورنال: Nature Reviews Genetics
سال: 2013
ISSN: 1471-0056,1471-0064
DOI: 10.1038/nrg3559