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Catalysis of homologous DNA pairing by yeast Rad51 and Rad54 proteins

Author

Listed:
  • Galina Petukhova

    (University of Texas Health Science Center at San Antonio)

  • Sabrina Stratton

    (University of Texas Health Science Center at San Antonio)

  • Patrick Sung

    (University of Texas Health Science Center at San Antonio)

Abstract

The Saccharomyces cerevisiae RAD51 and RAD54 genes are both required for the occurrence of homologous recombination and for the repair of double-stranded DNA breaks1. Previous studies have indicated that Rad51 protein, together with the single-stranded DNA-binding factor replication protein A (RPA), can promote the formation of heteroduplex DNA2,3,4, which is a key intermediate in homologous recombination1. Here we report the purification of the Rad54 protein to near homogeneity and the biochemical testing of its molecular function. We find that Rad54 protein possesses a double-stranded DNA-dependent ATPase activity, and that it interacts with the Rad51 protein. Addition of Rad54 protein to reactions containing Rad51 strongly stimulates the rate of pairing between homologous single-stranded and double-stranded DNA molecules. We conclude that Rad54 acts to overcome kinetic impediments that would limit homologous DNA pairing between recombining chromosomes in vivo.

Suggested Citation

  • Galina Petukhova & Sabrina Stratton & Patrick Sung, 1998. "Catalysis of homologous DNA pairing by yeast Rad51 and Rad54 proteins," Nature, Nature, vol. 393(6680), pages 91-94, May.
    • Handle: RePEc:nat:nature:v:393:y:1998:i:6680:d:10.1038_30037
    DOI: 10.1038/30037
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    Cited by:

    1. Anne Margriet Heijink & Colin Stok & David Porubsky & Eleni Maria Manolika & Jurrian K. Kanter & Yannick P. Kok & Marieke Everts & H. Rudolf Boer & Anastasia Audrey & Femke J. Bakker & Elles Wierenga , 2022. "Sister chromatid exchanges induced by perturbed replication can form independently of BRCA1, BRCA2 and RAD51," Nature Communications, Nature, vol. 13(1), pages 1-16, December.

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