RAP1: Protector of Telomeres, Defender against Obesity
نویسندگان
چکیده
منابع مشابه
Rap1 affects the length and heterogeneity of human telomeres.
Telomere length is controlled in part by cis-acting negative regulators that limit telomere extension by telomerase. In budding yeast, the major telomere length regulator scRap1 binds to telomeric DNA and acts to inhibit telomere elongation in cis. Because the human Rap1 ortholog hRap1 does not bind to telomeric DNA directly but is recruited to telomeres by TRF2, we examined its role in telomer...
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Telomeres, the nucleoprotein structures at the ends of linear chromosomes, promote genome stability by distinguishing chromosome termini from DNA double-strand breaks (DSBs). Cells possess two principal pathways for DSB repair: homologous recombination and non-homologous end joining (NHEJ). Several studies have implicated TRF2 in the protection of telomeres from NHEJ, but the underlying mechani...
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متن کاملNontelomeric role for Rap1 in regulating metabolism and protecting against obesity.
The mammalian telomere-binding protein Rap1 was recently found to have additional nontelomeric functions, acting as a transcriptional cofactor and a regulator of the NF-κB pathway. Here, we assess the effect of disrupting mouse Rap1 in vivo and report on its unanticipated role in metabolic regulation and body-weight homeostasis. Rap1 inhibition causes dysregulation in hepatic as well as adipose...
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ژورنال
عنوان ژورنال: Cell Reports
سال: 2013
ISSN: 2211-1247
DOI: 10.1016/j.celrep.2013.06.011