J 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

EID Scopus

Klíčová slova anglicky

common fragile sites; genomic instability; mitotic DNA synthesis; MUS81; RAD51 filament; RECQ5; replication stress

Štítky

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
Název: SUMO a stability genomu
Investor: Grantová agentura ČR, SUMO a stability genomu
GA17-17720S, projekt VaV
Název: Vnitřní vlastnosti RAD51 vlákna a jeho biologické regulace
Investor: Grantová agentura ČR, Vnitřní vlastnosti RAD51 vlákna a jeho biologické regulace
MUNI/M/1894/2014, interní kód MU
Název: Development of new MUS81 nuclease inhibitors as chemical biology probe with clinical progression
Investor: Masarykova univerzita, Development of new MUS81 nuclease inhibitors as chemical biology probe with clinical progression, INTERDISCIPLINARY - Mezioborové výzkumné projekty