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Work in our laboratory is focused on understanding the molecular transactions that govern chromosome stability and replication. The association of cancer predisposition and other pathology with mutations that affect chromosomal metabolism forms the basis of our interest in this process. In this regard, we focus on a conserved multiprotein complex that includes Mre11, Rad50, and Nbs1 in mammals or Xrs2 in the budding yeast S. cerevisiae. Our laboratory has isolated and characterized the human Mre11 complex, hMre11, hRad50, and Nbs1. We proved that an analogue of the S. cerevisiae Mre11 complex exists in human cells, and subsequently established definitive evidence that the yeast and human complexes mediate double-strand break repair in S. cerevisiae and mammalian cells, respectively. Our data suggest that in human cells, the complex acts as a sensor of DNA damage that participates in the activation of cell cycle checkpoints following g-irradiation.
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STAR PROTOCOLSno. 1 (2024): 102843-102843
BIOESSAYSno. 7 (2023): e2300042-e2300042
bioRxiv : the preprint server for biology (2023)
crossref(2023)
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Nature Communicationsno. 1 (2022): 1-14
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