MRN, CtIP, and BRCA1 mediate repair of topoisomerase II–DNA adducts

Abstract excerpt

Repair of DNA double-strand breaks (DSBs) with complex ends poses a special challenge, as additional processing is required before DNA ligation. For example, protein-DNA adducts must be removed to allow repair by either nonhomologous end joining or homology-directed repair. Here, we investigated the processing of topoisomerase II (Top2)-DNA adducts induced by treatment with the chemotherapeutic agent etoposide....

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