Hypersensitivity to DNA double‐strand breaks associated with PARG deficiency is suppressed by exo‐1 and polq‐1 mutations in Caenorhabditis elegans

Deficiency of either of the two homologs of poly(ADP‐ribose) glycohydrolase (PARG), PARG‐1 and PARG‐2, in Caenorhabditis elegans leads to hypersensitivity to ionizing radiation (IR). In the germ cells of parg‐2 mutant worms, the dissipation of recombinase RAD‐51 foci was slower than in wild‐type (WT) cells, suggesting defects in DNA double‐strand break (DSB) repair via homologous recombination (HR). Nevertheless, RPA‐1, the large subunit of...