Synergistic action of the Saccharomyces cerevisiae homologous recombination factors Rad54 and Rad51 in chromatin remodeling

Young Ho Kwon, Peter Chi, Dong Hyun Roh, Hannah Klein, Patrick Sung

Research output: Contribution to journalArticle

17 Scopus citations

Abstract

Rad54, a member of the Swi2/Snf2 protein family, works in concert with the RecA-like recombinase Rad51 during the early and late stages of homologous recombination. Rad51 markedly enhances the activities of Rad54, including the induction of topological changes in DNA and the remodeling of chromatin structure. Reciprocally, Rad54 promotes Rad51-mediated DNA strand invasion with either naked or chromatinized DNA. Here, using various Saccharomyces cerevisiae rad51 and rad54 mutant proteins, mechanistic aspects of Rad54/Rad51-mediated chromatin remodeling are defined. Disruption of the Rad51-Rad54 complex leads to a marked attenuation of chromatin remodeling activity. Moreover, we present evidence that assembly of the Rad51 presynaptic filament represents an obligatory step in the enhancement of the chromatin remodeling reaction. Interestingly, we find a specific interaction of the N-terminal tail of histone H3 with Rad54 and show that the H3 tail interaction domain resides within the amino terminus of Rad54. These results suggest that Rad54-mediated chromatin remodeling coincides with DNA homology search by the Rad51 presynaptic filament and that this process is facilitated by an interaction of Rad54 with histone H3.

Original languageEnglish (US)
Pages (from-to)1496-1506
Number of pages11
JournalDNA Repair
Volume6
Issue number10
DOIs
StatePublished - Oct 1 2007
Externally publishedYes

Keywords

  • Chromatin remodeling
  • D-loop
  • Homologous recombination
  • Rad51
  • Rad54

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Cell Biology

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