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We previously reported that Schizosaccharomyces pombe pnk1 cells are more sensitive than wild-type cells to γ-radiation and camptothecin, indicating that Pnk1 is required for DNA repair. Here, we report that pnk1pku70 and pnk1rhp51 double mutants are more sensitive to γ-radiation than single mutants, from which we infer that Pnk1's primary role is independent of either homologous recombination or...
Efficient DNA double-strand break (DSB) repair is critical for the maintenance of genomic integrity. In mammalian cells, DSBs are preferentially repaired by the non-homologous end-joining pathway relying on DNA-PK activity, but other mechanisms may promote end-joining. We previously described a DSB repair pathway that requires synapsis of DNA ends by poly(ADP-ribose) polymerase-1 (PARP-1) and ligation...
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