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Two Molecularly Distinct G2/M Checkpoints Are Induced by Ionizing Irradiation
ABSTRACT Cell cycle checkpoints are among the multiple mechanisms that eukaryotic cells possess to maintain genomic integrity and minimize tumorigenesis. Ionizing irradiation (IR) induces measurableExpand
ATM phosphorylates p95/nbs1 in an S-phase checkpoint pathway
The rare diseases ataxia-telangiectasia (AT), caused by mutations in the ATM gene, and Nijmegen breakage syndrome (NBS), with mutations in the p95/nbs1 gene, share a variety of phenotypicExpand
Involvement of the cohesin protein, Smc1, in Atm-dependent and independent responses to DNA damage.
Structural maintenance of chromosomes (SMC) proteins play important roles in sister chromatid cohesion, chromosome condensation, sex-chromosome dosage compensation, and DNA recombination and repair.Expand
Involvement of Brca1 in S-Phase and G2-Phase Checkpoints after Ionizing Irradiation
ABSTRACT Cell cycle arrests in the G1, S, and G2phases occur in mammalian cells after ionizing irradiation and appear to protect cells from permanent genetic damage and transformation. Though Brca1Expand
The human LINE-1 retrotransposon creates DNA double-strand breaks.
Long interspersed element-1 (L1) is an autonomous retroelement that is active in the human genome. The proposed mechanism of insertion for L1 suggests that cleavage of both strands of genomic DNA isExpand
Convergence of the Fanconi Anemia and Ataxia Telangiectasia Signaling Pathways
Fanconi anemia (FA) and ataxia telangiectasia (AT) are clinically distinct autosomal recessive disorders characterized by spontaneous chromosome breakage and hematological cancers. FA cells areExpand
Phosphorylation of serine 1387 in Brca1 is specifically required for the Atm-mediated S-phase checkpoint after ionizing irradiation.
Although it is well established that inheritance of mutations in the Brca1 gene significantly increases the chances of developing breast or ovarian cancers, the mechanisms underlying this specificExpand
A Novel ATM-Dependent Pathway Regulates Protein Phosphatase 1 in Response to DNA Damage
ABSTRACT Protein phosphatase 1 (PP1), a major protein phosphatase important for a variety of cellular responses, is activated in response to ionizing irradiation (IR)-induced DNA damage. Here, weExpand
Aurora-B mediated ATM serine 1403 phosphorylation is required for mitotic ATM activation and the spindle checkpoint.
The ATM kinase plays a critical role in the maintenance of genetic stability. ATM is activated in response to DNA damage and is essential for cell-cycle checkpoints. Here, we report that ATM isExpand
The kinetochore protein Bub1 participates in the DNA damage response.
The DNA damage response (DDR) and the spindle assembly checkpoint (SAC) are two critical mechanisms by which mammalian cells maintain genome stability. There is a growing body of evidence that DDRExpand
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