Consulta: creatorFacets:"Hogrel, Gaelle"
Registros recuperados: 3
Data/hora: 09/06/2024 06:28:30

Role of RadA and DNA Polymerases in Recombination-Associated DNA Synthesis in Hyperthermophilic Archaea
Provedor de dados: 5
Autores: Hogrel, Gaelle; Lu, Yang; Alexandre, Nicolas; Bossé, Audrey; Dulermo, Remi; Ishino, Sonoko; Ishino, Yoshizumi; Flament, Didier.
Among the three domains of life, the process of homologous recombination (HR) plays a central role in the repair of double-strand DNA breaks and the restart of stalled replication forks. Curiously, main protein actors involved in the HR process appear to be essential for hyperthermophilic Archaea raising interesting questions about the role of HR in replication and repair strategies of those Archaea living in extreme conditions. One key actor of this process is the recombinase RadA, which allows the homologous strand search and provides a DNA substrate required for following DNA synthesis and restoring genetic information. DNA polymerase operation after the strand exchange step is unclear in Archaea. Working with Pyrococcus abyssi proteins, here we show...
Tipo: Text
Palavras-chave: Homologous recombination; Archaea; DNA polymerase; Recombinase; DNA repair.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00641/75274/75539.pdf

Physical and functional interplay between PCNA DNA clamp and Mre11–Rad50 complex from the archaeon Pyrococcus furiosus
Provedor de dados: 5
Autores: Hogrel, Gaelle; Lu, Yang; Laurent, Sebastien; Henry, Etienne; Etienne, Clarisse; Duy Khanh Phung,; Dulermo, Remi; Bosse, Audrey; Pluchon, Pierre Francois; Clouet-d'Orval, Beatrice; Flament, Didier.
Several archaeal species prevalent in extreme environments are particularly exposed to factors likely to cause DNA damages. These include hyperthermophilic archaea (HA), living at temperatures &gt;70°C, which arguably have efficient strategies and robust genome guardians to repair DNA damage threatening their genome integrity. In contrast to Eukarya and other archaea, homologous recombination appears to be a vital pathway in HA, and the Mre11–Rad50 complex exerts a broad influence on the initiation of this DNA damage response process. In a previous study, we identified a physical association between the Proliferating Cell Nuclear Antigen (PCNA) and the Mre11–Rad50 (MR) complex. Here, by performing co-immunoprecipitation and SPR analyses, we identified a...
Tipo: Text
Ano: 2018
URL: http://archimer.ifremer.fr/doc/00439/55092/56534.pdf

An Extended Network of Genomic Maintenance in the Archaeon Pyrococcus abyssi Highlights Unexpected Associations between Eucaryotic Homologs
Provedor de dados: 5
Autores: Pluchon, Pierre Francois; Fouqueau, Thomas; Creze, Christophe; Laurent, Sebastien; Briffotaux, Julien; Hogrel, Gaelle; Palud, Adeline; Henneke, Ghislaine; Godfroy, Anne; Hausner, Winfried; Thomm, Michael; Nicolas, Jacques; Flament, Didier.
In Archaea, the proteins involved in the genetic information processing pathways, including DNA replication, transcription, and translation, share strong similarities with those of eukaryotes. Characterizations of components of the eukaryotic-type replication machinery complex provided many interesting insights into DNA replication in both domains. In contrast, DNA repair processes of hyperthermophilic archaea are less well understood and very little is known about the intertwining between DNA synthesis, repair and recombination pathways. The development of genetic system in hyperthermophilic archaea is still at a modest stage hampering the use of complementary approaches of reverse genetics and biochemistry to elucidate the function of new candidate DNA...
Tipo: Text
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00171/28198/26556.pdf