2017
RECQ5 Helicase Cooperates with MUS81 Endonuclease in Processing Stalled Replication Forks at Common Fragile Sites during Mitosis
DI MARCO, Stefano; Zdenka HAŠANOVÁ; Radhakrishnan KANAGARAJ; Nagaraja CHAPPIDI; Veronika ALTMANNOVÁ et al.Základní údaje
Originální název
RECQ5 Helicase Cooperates with MUS81 Endonuclease in Processing Stalled Replication Forks at Common Fragile Sites during Mitosis
Autoři
DI MARCO, Stefano; Zdenka HAŠANOVÁ; Radhakrishnan KANAGARAJ; Nagaraja CHAPPIDI; Veronika ALTMANNOVÁ; Shruti MENON; Hana SEDLÁČKOVÁ; Jana LANGHOFF; Kalpana SURENDRANATH; Daniela HÜHN; Rahul BHOWMICK; María Victoria MARINI PALOMEQUE; Stefano FERRARI; Ian D. HICKSON; Lumír KREJČÍ a Pavel JANSCAK
Vydání
Molecular Cell, CAMBRIDGE, CELL PRESS, 2017, 1097-2765
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10608 Biochemistry and molecular biology
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 14.248
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14110/17:00094931
Organizační jednotka
Lékařská fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
common fragile sites; genomic instability; mitotic DNA synthesis; MUS81; RAD51 filament; RECQ5; replication stress
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 8. 3. 2018 12:41, Soňa Böhmová
Anotace
V originále
The MUS81-EME1 endonuclease cleaves late replication intermediates at common fragile sites (CFSs) during early mitosis to trigger DNA-repair synthesis that ensures faithful chromosome segregation. Here, we show that these DNA transactions are promoted by RECQ5 DNA helicase in a manner dependent on its Ser727 phosphorylation by CDK1. Upon replication stress, RECQ5 associates with CFSs in early mitosis through its physical interaction with MUS81 and promotes MUS81-dependent mitotic DNA synthesis. RECQ5 depletion or mutational inactivation of its ATP-binding site, RAD51-interacting domain, or phosphorylation site causes excessive binding of RAD51 to CFS loci and impairs CFS expression. This leads to defective chromosome segregation and accumulation of CFS-associated DNA damage in G1 cells. Biochemically, RECQ5 alleviates the inhibitory effect of RAD51 on 30-flap DNA cleavage by MUS81-EME1 through its RAD51 filament disruption activity. These data suggest that RECQ5 removes RAD51 filaments stabilizing stalled replication forks at CFSs and hence facilitates CFS cleavage by MUS81-EME1.
Návaznosti
| GA13-26629S, projekt VaV |
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| GA17-17720S, projekt VaV |
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| MUNI/M/1894/2014, interní kód MU |
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