E-viri
Recenzirano
Odprti dostop
-
Chappidi, Nagaraja; Nascakova, Zuzana; Boleslavska, Barbora; Zellweger, Ralph; Isik, Esin; Andrs, Martin; Menon, Shruti; Dobrovolna, Jana; Balbo Pogliano, Chiara; Matos, Joao; Porro, Antonio; Lopes, Massimo; Janscak, Pavel
Molecular cell, 02/2020, Letnik: 77, Številka: 3Journal Article
Formation of co-transcriptional R-loops underlies replication fork stalling upon head-on transcription-replication encounters. Here, we demonstrate that RAD51-dependent replication fork reversal induced by R-loops is followed by the restart of semiconservative DNA replication mediated by RECQ1 and RECQ5 helicases, MUS81/EME1 endonuclease, RAD52 strand-annealing factor, the DNA ligase IV (LIG4)/XRCC4 complex, and the non-catalytic subunit of DNA polymerase δ, POLD3. RECQ5 disrupts RAD51 filaments assembled on stalled forks after RECQ1-mediated reverse branch migration, preventing a new round of fork reversal and facilitating fork cleavage by MUS81/EME1. MUS81-dependent DNA breaks accumulate in cells lacking RAD52 or LIG4 upon induction of R-loop formation, suggesting that RAD52 acts in concert with LIG4/XRCC4 to catalyze fork religation, thereby mediating replication restart. The resumption of DNA synthesis after R-loop-associated fork stalling also requires active transcription, the restoration of which depends on MUS81, RAD52, LIG4, and the transcription elongation factor ELL. These findings provide mechanistic insights into transcription-replication conflict resolution. Display omitted •R-loop-induced fork stalling is followed by MUS81-dependent replication restart•RECQ5 mediates the switch from fork stalling to restart by suppressing fork reversal•Restart of R-loop-stalled forks is mediated by fork cleavage and religation•Restart of R-loop-stalled forks requires reactivation of transcription Transcription-replication conflicts associated with the formation of R-loops represent a major cause of replication stress. Chappidi et al. reveal that replication forks blocked by co-transcriptional R-loops can be restarted by fork cleavage and religation linked to transcription restart.
![loading ... loading ...](themes/default/img/ajax-loading.gif)
Vnos na polico
Trajna povezava
- URL:
Faktor vpliva
Dostop do baze podatkov JCR je dovoljen samo uporabnikom iz Slovenije. Vaš trenutni IP-naslov ni na seznamu dovoljenih za dostop, zato je potrebna avtentikacija z ustreznim računom AAI.
Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
---|
Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
---|
Vir: Osebne bibliografije
in: SICRIS
To gradivo vam je dostopno v celotnem besedilu. Če kljub temu želite naročiti gradivo, kliknite gumb Nadaljuj.