Article ; Online: Integrator facilitates RNAPII removal to prevent transcription-replication collisions and genome instability.
2023 Volume 83, Issue 13, Page(s) 2357–2366.e8
Abstract: DNA replication preferentially initiates close to active transcription start sites (TSSs) in the human genome. Transcription proceeds discontinuously with an accumulation of RNA polymerase II (RNAPII) in a paused state near the TSS. Consequently, ... ...
Abstract | DNA replication preferentially initiates close to active transcription start sites (TSSs) in the human genome. Transcription proceeds discontinuously with an accumulation of RNA polymerase II (RNAPII) in a paused state near the TSS. Consequently, replication forks inevitably encounter paused RNAPII soon after replication initiates. Hence, dedicated machinery may be needed to remove RNAPII and facilitate unperturbed fork progression. In this study, we discovered that Integrator, a transcription termination machinery involved in the processing of RNAPII transcripts, interacts with the replicative helicase at active forks and promotes the removal of RNAPII from the path of the replication fork. Integrator-deficient cells have impaired replication fork progression and accumulate hallmarks of genome instability including chromosome breaks and micronuclei. The Integrator complex resolves co-directional transcription-replication conflicts to facilitate faithful DNA replication. |
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MeSH term(s) | Humans ; RNA Polymerase II/genetics ; RNA Polymerase II/metabolism ; DNA Replication ; Transcription, Genetic ; DNA Helicases/genetics ; DNA Helicases/metabolism ; Genomic Instability |
Chemical Substances | RNA Polymerase II (EC 2.7.7.-) ; DNA Helicases (EC 3.6.4.-) |
Language | English |
Publishing date | 2023-06-08 |
Publishing country | United States |
Document type | Journal Article |
ZDB-ID | 1415236-8 |
ISSN | 1097-4164 ; 1097-2765 |
ISSN (online) | 1097-4164 |
ISSN | 1097-2765 |
DOI | 10.1016/j.molcel.2023.05.015 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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