Repair of DNA double-strand breaks in RNAPI- and RNAPII-transcribed loci.

DNA Repair
E LesageGaëlle Legube

Abstract

DNA double-strand breaks (DSBs) are toxic lesions triggered not only by environmental sources, but also by a large number of physiological processes. Of importance, endogenous DSBs frequently occur in genomic loci that are transcriptionally active. Recent work suggests that DSBs occurring in transcribed loci are handled by specific pathway(s) that entail local transcriptional repression, chromatin signaling, the involvement of RNA species and DSB mobility. In this Graphical Review we provide an updated view of the "Transcription-Coupled DSB Repair" (TC-DSBR) pathway(s) that are mounted at DSBs occurring in loci transcribed by RNA Polymerase I (RNAPI) or RNA Polymerase II (RNAPII), highlighting differences and common features, as well as yet unanswered questions.

References

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Citations

Jul 27, 2021·DNA Repair·Vincent Spegg, Matthias Altmeyer

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