The telomeres that cap the ends of eukaryotic chromosomes serve a dual role in protecting the chromosome ends and in intracellular signaling for regulating cell proliferation. A complex of six telomere-associated proteins has been identified--the telosome or shelterin complex--that is crucial for both the maintenance of telomere structure and its signaling functions.
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Xin et al. (2008) studied this question.
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