Abstract
ABSTRACTHomologous recombination is initiated by nucleolytic degradation (resection) of DNA double-strand breaks (DSBs), which involves different nucleases including the Mre11-Rad50-Xrs2 (MRX) complex and the Exonuclease 1 (Exo1). The characterization of a novel mutation in Mre11 causing accelerated DSB resection has allowed to show that MRX facilitates DNA end processing by Exo1 through local unwinding of double-stranded DNA ends.
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