Physical interaction with Spo11 mediates the localisation of Mre11 to chromatin in meiosis and promotes its nuclease activity

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14110%2F24%3A00135723" target="_blank" >RIV/00216224:14110/24:00135723 - isvavai.cz</a>

Result on the web

<a href="https://academic.oup.com/nar/advance-article/doi/10.1093/nar/gkae111/7614131?login=true" target="_blank" >https://academic.oup.com/nar/advance-article/doi/10.1093/nar/gkae111/7614131?login=true</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/nar/gkae111" target="_blank" >10.1093/nar/gkae111</a>

Result language

angličtina

Original language name

Physical interaction with Spo11 mediates the localisation of Mre11 to chromatin in meiosis and promotes its nuclease activity

Original language description

Meiotic recombination is of central importance for the proper segregation of homologous chromosomes, but also for creating genetic diversity. It is initiated by the formation of double-strand breaks (DSBs) in DNA catalysed by evolutionarily conserved Spo11, together with additional protein partners. Difficulties in purifying the Spo11 protein have limited the characterization of its biochemical properties and of its interactions with other DSB proteins. In this study, we have purified fragments of Spo11 and show for the first time that Spo11 can physically interact with Mre11 and modulates its DNA binding, bridging, and nuclease activities. The interaction of Mre11 with Spo11 requires its far C-terminal region, which is in line with the severe meiotic phenotypes of various mre11 mutations located at the C-terminus. Moreover, calibrated ChIP for Mre11 shows that Spo11 promotes Mre11 recruitment to chromatin, independent of DSB formation. A mutant deficient in Spo11 interaction severely reduces the association of Mre11 with meiotic chromatin. Consistent with the reduction of Mre11 foci in this mutant, it strongly impedes DSB formation, leading to spore death. Our data provide evidence that physical interaction between Spo11 and Mre11, together with end-bridging, promote normal recruitment of Mre11 to hotspots and DSB formation.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10608 - Biochemistry and molecular biology

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Nucleic acids research

ISSN

0305-1048

e-ISSN

1362-4962

Volume of the periodical

52

Issue of the periodical within the volume

8

Country of publishing house

GB - UNITED KINGDOM

Number of pages

16

Pages from-to

4328-4343

UT code for WoS article

001173092200001

EID of the result in the Scopus database

2-s2.0-85192675526