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- W4214776784 abstract "Telomerase maintains genome stability by extending the 3' telomeric repeats at eukaryotic chromosome ends, thereby counterbalancing progressive loss caused by incomplete genome replication. In mammals, telomerase recruitment to telomeres is mediated by TPP1, which assembles as a heterodimer with POT1. We report structures of DNA-bound telomerase in complex with TPP1 and with TPP1-POT1 at 3.2- and 3.9-angstrom resolution, respectively. Our structures define interactions between telomerase and TPP1-POT1 that are crucial for telomerase recruitment to telomeres. The presence of TPP1-POT1 stabilizes the DNA, revealing an unexpected path by which DNA exits the telomerase active site and a DNA anchor site on telomerase that is important for telomerase processivity. Our findings rationalize extensive prior genetic and biochemical findings and provide a framework for future mechanistic work on telomerase regulation." @default.
- W4214776784 created "2022-03-02" @default.
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- W4214776784 date "2022-03-11" @default.
- W4214776784 modified "2023-10-01" @default.
- W4214776784 title "Structural basis of human telomerase recruitment by TPP1-POT1" @default.
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- W4214776784 doi "https://doi.org/10.1126/science.abn6840" @default.
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