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Title

Npl3, a new link between RNA-binding proteins and the maintenance of genome integrity

AuthorsSantos-Pereira, José M. ; Herrero, Ana B.; Moreno, Sergio ; Aguilera, Andrés
KeywordsProteins
RNA-binding
Npl3
Transcription-associated genome instability
Transcription-replication conflicts
DNA repair
R loops
Issue Date2014
PublisherLandes Bioscience
CitationCell Cycle 13(10): 1524-1529 (2014)
AbstractThe mRNA is co-transcriptionally bound by a number of RNA-binding proteins (RBPs) that contribute to its processing and formation of an exportcompetent messenger ribonucleoprotein particle (mRNP). In the last few years, increasing evidence suggests that RBPs play a key role in preventing transcription- associated genome instability. Part of this instability is mediated by the accumulation of co-transcriptional R loops, which may impair replication fork (RF) progression due to collisions between transcription and replication machineries. In addition, some RBPs have been implicated in DNA repair and/or the DNA damage response (DDR). Recently, the Npl3 protein, one of the most abundant heterogeneous nuclear ribonucleoproteins (hnRNPs) in yeast, has been shown to prevent transcription-associated genome instability and accumulation of RF obstacles, partially associated with R-loop formation. Interestingly, Npl3 seems to have additional functions in DNA repair, and npl3Δ mutants are highly sensitive to genotoxic agents, such as the antitumor drug trabectedin. Here we discuss the role of Npl3 in particular, and RBPs in general, in the connection of transcription with replication and genome instability, and its effect on the DDR. © 2014 Landes Bioscience.
URIhttp://hdl.handle.net/10261/116214
DOI10.4161/cc.28708
Identifiersissn: 1538-4101
e-issn: 1551-4005
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