Error-free and Mutagenic Processing of Topoisomerase I- provoked damage at genomic ribonucleotides
نویسندگان
چکیده
Thank you again for your patience and once more, apologies for the unusual delay with reviewing your submission on Top1 damage processing at genomic ribonucleotides. We have now finally received the complete set of reviewer comments, and I am happy to inform you that all three referees consider this work interesting and important and would be supportive of publication pending adequate addressing of a limited number of specific issues. I would therefore like to invite to prepare and submit a revised manuscript along the lines suggested by the referees. As you will see, the only potentially more serious caveat mentioned by referees 2 and 3 is the partially unclear connection of Top1 repair mechanisms to in vivo processes; and while I would not make extensions into that direction a prerequisite for further consideration at our journal, I feel that any results you may be able to add to address these concerns would be very helpful for increasing the significance of the study further.
منابع مشابه
Error-free and mutagenic processing of topoisomerase 1-provoked damage at genomic ribonucleotides.
Genomic ribonucleotides incorporated during DNA replication are commonly repaired by RNase H2-dependent ribonucleotide excision repair (RER). When RNase H2 is compromised, such as in Aicardi-Goutières patients, genomic ribonucleotides either persist or are processed by DNA topoisomerase 1 (Top1) by either error-free or mutagenic repair. Here, we present a biochemical analysis of these pathways....
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DNA polymerases incorporate ribonucleoside monophosphates (rNMPs) into genomic DNA at a low level and such rNMPs are efficiently removed in an error-free manner by ribonuclease (RNase) H2. In the absence of RNase H2 in budding yeast, persistent rNMPs give rise to short deletions via a mutagenic process initiated by Topoisomerase 1 (Top1). We examined the activity of a 2-bp, rNMP-dependent delet...
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DNA Topoisomerase I (Top1) is required to relax DNA supercoils generated by RNA polymerases (RNAPs). Top1 is inhibited with high specificity by camptothecin (CPT), an effective anticancer agent, and by oxidative base damage and ribonucleotides in DNA strands, resulting into Top1-DNA cleavage complexes (Top1ccs). To understand how Top1ccs affect genome stability, we have investigated the global ...
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DNA damage is attended by rapid recruitment of endogenous type I topoisomerase (topo I) into covalent cleavage complexes with genomic DNA in vivo. In contrast, endogenous topoisomerase II alpha and beta are not stimulated by DNA damage. We show that topo I and p53 are able to associate at arrested topo I-genomic DNA covalent complexes in vivo, suggesting that p53 directly stimulates topo I acti...
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تاریخ انتشار 2015