Global ETD Search
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Showing 1 to 8 of 8 for “"telomere protection"”.
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The Role of Pot1 in Telomere Protection and Maintenance
… telomeric DNA binding protein implicated in telomere length regulation in human cells. To address the role of POT1 in telomere protection we used RNAi in human cells. We confirmed that POT1 acts as a negative regulator of telomerase and showed that POT1 is required to protect telomeres. …
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Distinct Functions of POT1 in Telomere Protection and Length Regulation
<p>Telomeres are DNA-protein structures that protect eukaryotic chromosome ends from illegitimate recombination and degradation. Telomeres become shortened with each cell division unless telomerase, a reverse transcriptase, is activated. In addition to playing a protective role of chromosome ends, …
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Further Insight into the Two Functions of Telomeres: Determining the Role of Tankyrase1 in Telomere Length Regulation and Tin2 in Telomere Protection
… poly(ADP-ribose) polymerase that can localize to telomeres through its interaction with the shelterin component TRF1. Tankyrase1 poly(ADP-ribosyl)ates TRF1 in vitro, and its nuclear overexpression leads to loss of TRF1 and telomere elongation, suggesting that tankyrase1 is a positive regulator of …
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Investigations into Why Human (but not mouse) KU70/80 is Essential Reveal a Role for Human KU70/80 in Ribosome Biogenesis
… break (DSB) repair factor. We have ruled out telomere protection or DSB repair as the essential function ofKu70/80. Instead, unbiased genome-wide analyses pointed to a role in ribosome biogenesis. Human Ku70/80, but not mouse Ku70/80 is enriched in the nucleolus at the Dense Fibrillar …
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Testing the T-loop Model of Telomeric End Protection
<p>Telomeres are the key structures that protect the ends of linear chromosomes. Although they are often thought about in the context of cellular aging, their most important role is actually to protect the end of the DNA from being mis-interpreted as a site of DNA damage. Telomeres are thought to …
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Functional Analysis of the Yku Complex in Telomere Length Regulation
… It contributes to the maintenance of wild type telomere length and, moreover, has been implicated in the protection of the telomeres from end-to-end fusions. Telomere-bound Yku delocalizes from telomeric foci in response to DNA damage and accumulates at the sites of a DNA break. This thesis …
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Investigating Mechanisms of Telomere End-Protection
… of the conserved shelterin component, Rap1, to telomere endprotection. Rap1 was first discovered in budding yeast as a transcription factor and was later shown to bind directly to telomeres. Two important functions of Rap1 in yeast are: the negative regulation of telomere length, and the …
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On the Second Telomere Maintenance Machine: Structure, Recruitment, and Regulation of the CST–Polα/primase C-strand Fill-in Complex
<p>Telomeres are the terminal nucleo protein components of eukaryotic chromosomes that safeguard genome integrity. Human telomeric DNA consists of double-stranded (ds) 5'-TTAGGG-3' repeats terminating in a 3' single-stranded (ss) overhang of the G-rich strand.The sequence and structure of the …