Journal
CHROMOSOMA
Volume 123, Issue 1-2, Pages 57-66Publisher
SPRINGER
DOI: 10.1007/s00412-013-0440-y
Keywords
Telomere; Resection; Single-strand DNA; Nucleases; DNA replication
Funding
- Associazione Italiana per la Ricerca sul Cancro (AIRC) [IG11407]
- Cofinanziamento MIUR/Universita di Milano-Bicocca
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Telomeres are specialized nucleoprotein complexes that provide protection to the ends of eukaryotic chromosomes. Telomeric DNA consists of tandemly repeated G-rich sequences that terminate with a 3' single-stranded overhang, which is important for telomere extension by the telomerase enzyme. This structure, as well as most of the proteins that specifically bind double and single-stranded telomeric DNA, are conserved from yeast to humans, suggesting that the mechanisms underlying telomere identity are based on common principles. The telomeric 3' overhang is generated by different events depending on whether the newly synthesized strand is the product of leading- or lagging-strand synthesis. Here, we review the mechanisms that regulate these processes at Saccharomyces cerevisiae and mammalian telomeres.
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