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PMID:11934988
Citation |
Celeste, A, Petersen, S, Romanienko, PJ, Fernandez-Capetillo, O, Chen, HT, Sedelnikova, OA, Reina-San-Martin, B, Coppola, V, Meffre, E, Difilippantonio, MJ, Redon, C, Pilch, DR, Olaru, A, Eckhaus, M, Camerini-Otero, RD, Tessarollo, L, Livak, F, Manova, K, Bonner, WM, Nussenzweig, MC and Nussenzweig, A (2002) Genomic instability in mice lacking histone H2AX. Science 296:922-7 |
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Abstract |
Higher order chromatin structure presents a barrier to the recognition and repair of DNA damage. Double-strand breaks (DSBs) induce histone H2AX phosphorylation, which is associated with the recruitment of repair factors to damaged DNA. To help clarify the physiological role of H2AX, we targeted H2AX in mice. Although H2AX is not essential for irradiation-induced cell-cycle checkpoints, H2AX-/- mice were radiation sensitive, growth retarded, and immune deficient, and mutant males were infertile. These pleiotropic phenotypes were associated with chromosomal instability, repair defects, and impaired recruitment of Nbs1, 53bp1, and Brca1, but not Rad51, to irradiation-induced foci. Thus, H2AX is critical for facilitating the assembly of specific DNA-repair complexes on damaged DNA. |
Links |
PubMed Online version:10.1126/science.1069398 |
Keywords |
Amino Acid Sequence; Animals; B-Lymphocytes/immunology; B-Lymphocytes/physiology; Base Sequence; Cell Aging; Cell Cycle; Cells, Cultured; Chromosome Aberrations; DNA Damage; DNA Repair; Female; Gene Targeting; Histones/chemistry; Histones/genetics; Histones/physiology; Immunoglobulin Class Switching; Infertility, Male/genetics; Infertility, Male/physiopathology; Lymphocyte Count; Male; Meiosis; Mice; Mice, Knockout; Molecular Sequence Data; Mutation; Phosphorylation; Recombination, Genetic; Spermatocytes/physiology; T-Lymphocytes/immunology; T-Lymphocytes/physiology |
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Significance
Annotations
Gene product | Qualifier | GO ID | GO term name | Evidence Code | with/from | Aspect | Notes | Status |
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