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Elongation factor ELOF1 drives transcription-coupled repairand prevents genome instability [DRB-TTchem-seq]


ABSTRACT: Correct transcription is crucial for life. However, DNA damage severely impedes elongating RNA Polymerase II (Pol II), causing transcription inhibition and transcription-replication conflicts. Cells have evolved intricate mechanisms to counteract the severe consequence of these transcription-blocking lesions, however the exact mechanism and factors involved remain largely unknown. Here, using a genome-wide CRISPR/cas9 screen, we identified elongation factor ELOF1 as an important new factor in the damage-induced transcription stress response. ELOF1 has an evolutionary-conserved role in TC-NER where it promotes the recruitment of the TC-NER factors UVSSA and TFIIH and facilitates Pol II ubiquitylation to efficiently repair TBLs. Importantly, ELOF1 has an additional role in protecting cells from transcription-mediated replication hindrance, thereby preserving genome stability. Thus, ELOF1 protects the transcription machinery from DNA damage by two distinct mechanisms.

ORGANISM(S): Homo sapiens

PROVIDER: GSE148844 | GEO | 2020/04/18

REPOSITORIES: GEO

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