Skip to Main content Skip to Navigation
Journal articles

Roles of XRCC2, RAD51B and RAD51D in RAD51-Independent SSA Recombination

Abstract : The repair of DNA double-strand breaks by recombination is key to the maintenance of genome integrity in all living organisms. Recombination can however generate mutations and chromosomal rearrangements, making the regulation and the choice of specific pathways of great importance. In addition to end-joining through non-homologous recombination pathways, DNA breaks are repaired by two homology-dependent pathways that can be distinguished by their dependence or not on strand invasion catalysed by the RAD51 recombinase. Working with the plant Arabidopsis thaliana, we present here an unexpected role in recombination for the Arabidopsis RAD51 paralogues XRCC2, RAD51B and RAD51D in the RAD51-independent single-strand annealing pathway. The roles of these proteins are seen in spontaneous and in DSB-induced recombination at a tandem direct repeat recombination tester locus, both of which are unaffected by the absence of RAD51. Individual roles of these proteins are suggested by the strikingly different severities of the phenotypes of the individual mutants, with the xrcc2 mutant being the most affected, and this is confirmed by epistasis analyses using multiple knockouts. Notwithstanding their clearly established importance for RAD51-dependent homologous recombination, XRCC2, RAD51B and RAD51D thus also participate in Single-Strand Annealing recombination.
Document type :
Journal articles
Complete list of metadata

Cited literature [78 references]  Display  Hide  Download
Contributor : Charles White Connect in order to contact the contributor
Submitted on : Monday, October 29, 2018 - 9:45:26 AM
Last modification on : Wednesday, June 1, 2022 - 9:36:08 AM
Long-term archiving on: : Wednesday, January 30, 2019 - 1:31:36 PM


Publisher files allowed on an open archive




Heïdi Serra, Olivier da Ines, Fabienne Degroote, Maria E. Gallego, Charles I. White. Roles of XRCC2, RAD51B and RAD51D in RAD51-Independent SSA Recombination. PLoS Genetics, Public Library of Science, 2013, 9 (11), pp.e1003971. ⟨10.1371/journal.pgen.1003971⟩. ⟨inserm-01907371⟩



Record views


Files downloads