Repair of tandem base lesions in DNA by human cell extracts generates persisting single-strand breaks.
Clustered DNA damage, where two or more lesions are located proximal to each other on the same or opposite DNA strands, is frequently produced as a result of exposure to ionising radiation. It has been suggested that such complex damaged sites pose problems for repair pathways. In this study, we addressed the question of how two 8-oxoguanine lesions, located two nucleotides apart on the same DNA strand, are repaired. We find that in human cell extracts repair of either of the 8-oxoguanine les...Expand abstract
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