Nucleic Acids Research · 2009 · 66 citations · 39 references
Life SciencesGeneticsMolecular BiologyDna RepairGene ExpressionRecombinationDna Double-strand Break RepairDna Strand BreaksDna Strand ExchangeDouble-strand Break RepairHomologous RecombinationRecombination ProteinsDna Double-strand BreaksDna-binding MotifsDouble-strand Dna BreaksRad51 RecombinaseRad51-mediated Strand ExchangeRecombinase ProteinsRecombination ReactionsRna Recognition Motifs
RAD51, a eukaryotic recombinase, catalyzes homologous-pairing and strand-exchange reactions, which are essential steps in homologous recombination and recombinational repair of double strand breaks. On the other hand, human PSF was originally identified as a component of spliceosomes, and its multiple functions in RNA processing, transcription and DNA recombination were subsequently revealed. In the present study, we found that PSF directly interacted with RAD51. PSF significantly enhanced RAD51-mediated homologous pairing and strand exchange at low RAD51 concentrations; however, in contrast, it inhibited these RAD51-mediated recombination reactions at the optimal RAD51 concentration. Deletion analyses revealed that the N-terminal region of PSF possessed the RAD51- and DNA-binding activities, but the central region containing the RNA-recognition motifs bound neither RAD51 nor DNA. These results suggest that PSF may have dual functions in homologous recombination and RNA processing through its N-terminal and central regions, respectively.
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The importance of repairing stalled replication forks
Michael M. Cox, Myron F. Goodman, Kenneth N. Kreuzer et al. · Nature · 2000 · 1.1K citations
Insights into DNA recombination from the structure of a RAD51–BRCA2 complex
Luca Pellegrini, David S. Yu, Thomas Lo et al. · Nature · 2002 · 704 citations