PARP1 regulates the genomic ribonucleotide processing activity of TOP1 to prevent the formation of toxic TOP1-DNA adducts and the associated mutations.
Edward James Sarrain, Quan Wang, Angel Caitlin Bondoy…·Hengyao Niu
This study shows PARP1 prevents TOP1 from causing deletions at STRs by inhibiting TOP1-DNA adduct formation, which could inform therapies for cancers with RNase H2 mutations.