Rad54, the motor of homologous recombination

Alexander V. Mazin, Olga M. Mazina, Dmitry V. Bugreev, Matthew J. Rossi

Research output: Contribution to journalReview articlepeer-review

134 Scopus citations

Abstract

Homologous recombination (HR) performs crucial functions including DNA repair, segregation of homologous chromosomes, propagation of genetic diversity, and maintenance of telomeres. HR is responsible for the repair of DNA double-strand breaks and DNA interstrand cross-links. The process of HR is initiated at the site of DNA breaks and gaps and involves a search for homologous sequences promoted by Rad51 and auxiliary proteins followed by the subsequent invasion of broken DNA ends into the homologous duplex DNA that then serves as a template for repair. The invasion produces a cross-stranded structure, known as the Holliday junction. Here, we describe the properties of Rad54, an important and versatile HR protein that is evolutionarily conserved in eukaryotes. Rad54 is a motor protein that translocates along dsDNA and performs several important functions in HR. The current review focuses on the recently identified Rad54 activities which contribute to the late phase of HR, especially the branch migration of Holliday junctions.

Original languageEnglish (US)
Pages (from-to)286-302
Number of pages17
JournalDNA Repair
Volume9
Issue number3
DOIs
StatePublished - Mar 2 2010
Externally publishedYes

Keywords

  • ATP-dependent DNA translocation
  • Branch migration
  • DNA double-strand break repair
  • Holliday junctions
  • Homologous recombination
  • Rad54 protein
  • RecQ helicases
  • Snf2 proteins

ASJC Scopus subject areas

  • Molecular Biology
  • Biochemistry
  • Cell Biology

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