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- W2958323280 abstract "Abstract Telomeres are a significant challenge to DNA replication and are prone to replication stress and telomere fragility. The shelterin component TRF1 facilitates telomere replication but the molecular mechanism remains uncertain. By interrogating the proteomic composition of telomeres, we show that telomeres lacking TRF1 undergo protein composition reorganisation associated with a DNA damage response and chromatin remodelers. Surprisingly, TRF1 suppresses the accumulation of promyelocytic leukemia (PML) protein, BRCA1 and the SMC5/6 complex at telomeres, which is associated with increased Homologous Recombination (HR) and TERRA transcription. We uncovered a previously unappreciated role for TRF1 in the suppression of telomere recombination, dependent on SMC5 and also POLD3 dependent Break Induced Replication at telomeres. We propose that TRF1 facilitates S-phase telomeric DNA synthesis to prevent illegitimate mitotic DNA recombination and chromatin rearrangement." @default.
- W2958323280 created "2019-07-23" @default.
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- W2958323280 date "2019-07-10" @default.
- W2958323280 modified "2023-09-27" @default.
- W2958323280 title "TRF1 prevents permissive DNA damage response, recombination and Break Induced Replication at telomeres" @default.
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- W2958323280 doi "https://doi.org/10.1101/697979" @default.
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