4.5 Article

Human BRCA2 protein promotes RAD51 filament formation on RPA-covered single-stranded DNA

Journal

NATURE STRUCTURAL & MOLECULAR BIOLOGY
Volume 17, Issue 10, Pages 1260-1262

Publisher

NATURE PUBLISHING GROUP
DOI: 10.1038/nsmb.1904

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Funding

  1. Tobacco-Related Disease Research Program [17FT-0046]
  2. US National Institutes of Health [GM58015, CA92276]
  3. US Department of Defense [DAMD17-00-1-0187]
  4. Susan G. Komen Breast Cancer Foundation [BCTR0201259]
  5. University of California Davis Cancer Center

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BRCA2 is a tumor suppressor that functions in homologous recombination, a key genomic integrity pathway. BRCA2 interacts with RAD51, the central protein of recombination, which forms filaments on single-stranded DNA (ssDNA) to perform homology search and DNA strand invasion. We report the purification of full-length human BRCA2 and show that it binds to similar to 6 RAD51 molecules and promotes RAD51 binding to ssDNA coated by replication protein A (RPA), in a manner that is stimulated by DSS1.

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