4.5 Editorial Material

Resolution of a complex crisis at DNA 3′ termini

Journal

NATURE STRUCTURAL & MOLECULAR BIOLOGY
Volume 26, Issue 5, Pages 335-336

Publisher

NATURE PUBLISHING GROUP
DOI: 10.1038/s41594-019-0215-0

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Funding

  1. NCI NIH HHS [R01 CA225637] Funding Source: Medline
  2. NIGMS NIH HHS [R15 GM114713] Funding Source: Medline

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Ribonucleotides that are misincorporated into DNA during replication are removed by topoisomerase 1, which generates 3'-terminal adducts that are not amenable to DNA repair and thus compromise genome stability. A recent report by Li et al. reveals that Apn2/APE2 resolves such blocked 3' termini, thereby suppressing topoisomerase 1-induced mutations at ribonucleotide monophosphate sites within the genome.

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