Results 261 to 270 of about 599,172 (303)
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Repairing DNA-methylation damage
Nature Reviews Molecular Cell Biology, 2004Methylating agents modify DNA at many different sites, thereby producing lethal and mutagenic lesions. To remove all the main harmful base lesions, at least three types of DNA-repair activities can be used, each of which involves a different reaction mechanism.
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Experimental Cell Research, 2006
Replicated DNA molecules are physically connected by cohesin complexes from the time of their synthesis in S-phase until they are segregated during anaphase of the subsequent mitosis or meiosis. This sister chromatid cohesion is essential for the biorientation of chromosomes on the mitotic or meiotic spindle.
Erwan, Watrin, Jan-Michael, Peters
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Replicated DNA molecules are physically connected by cohesin complexes from the time of their synthesis in S-phase until they are segregated during anaphase of the subsequent mitosis or meiosis. This sister chromatid cohesion is essential for the biorientation of chromosomes on the mitotic or meiotic spindle.
Erwan, Watrin, Jan-Michael, Peters
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DNA damage, repair and chromosomal damage
International Journal of Radiation Biology, 1997An important question in radiobiology is the relationship between primary DNA damage and chromosomal aberrations. What determines the chromosomal aberration frequency, especially in radiosensitive cells? Much evidence points to the double-strand break (dsb) as the critical lesion, however there is controversy over whether it is the initial induction ...
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1991
Some of the background to radiation chemical studies of DNA damage is presented, followed by a review of measurements of such damage and its repair in mammalian cells. While most effort has been placed on the measurement of radiation-induced strand breaks (because assays can be used in the biologically relevant dose range), the radiation-altered bases ...
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Some of the background to radiation chemical studies of DNA damage is presented, followed by a review of measurements of such damage and its repair in mammalian cells. While most effort has been placed on the measurement of radiation-induced strand breaks (because assays can be used in the biologically relevant dose range), the radiation-altered bases ...
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Chromatin and DNA damage repair
Russian Journal of Genetics, 2011In eukaryotic cells, inheritance of both exact DNA sequence and its arrangement into the chromatin is critical for maintaining stability of the genome. Various DNA lesions induced by endogenous and exogenous factors make this maintenance problematic. To understand completely how cells resolve this problem the knowledge on the nature of these lesions ...
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Plant DNA-damage repair/toleration 100 protein repairs UV-B-induced DNA damage
DNA Repair, 2014We report the characterization of VvDRT100-L, a grape DNA-damage repair/toleration 100 protein. VvDRT100-L has nine leucine-rich repeats and belongs to the plant DRT100 protein family. VvDRT100-L is expressed abundantly in green organs of grapevines, including tendrils, leaves, and green berry skins.
Nozomi Fujimori +3 more
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Repairable Damage in DNA: Overview
1975Due to the central functional role of DNA and the fact that each cell contains only one or at the most a few copies of each chromosome, damage to DNA has more severe implications for the functional integrity of the cell than does damage to most other cellular components.
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2017
DNA damage, when occurring in cancer-related genes, may lead to tumorigenesis. In normal cells, such DNA alterations activate a complex machinery of DNA damage repair. Genomic defects in DNA damage repair genes are known to be major drivers of cancer development and progression, in particular in breast and colon cancer.
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DNA damage, when occurring in cancer-related genes, may lead to tumorigenesis. In normal cells, such DNA alterations activate a complex machinery of DNA damage repair. Genomic defects in DNA damage repair genes are known to be major drivers of cancer development and progression, in particular in breast and colon cancer.
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Introduction: DNA Damage and Repair
1983The concept that cancer may be induced by the interaction of a carcinogen with DNA is widely accepted, although it is becoming increasingly clear that some carcinogens do not interact with DNA to a detectable extent. The carcinogens have been classified into two broad categories, genotoxic and non-genotoxic or epigenetic.
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2010
Our aim in this chapter is to highlight the biologic effort expended by a cell in protecting its deoxyribonucleic acid (DNA). Cellular DNA is under constant attack from both exogenous and endogenous agents and it is crucial that DNA damage is repaired efficiently and with fidelity to maintain genomic integrity.
Hammond, E.M. +2 more
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Our aim in this chapter is to highlight the biologic effort expended by a cell in protecting its deoxyribonucleic acid (DNA). Cellular DNA is under constant attack from both exogenous and endogenous agents and it is crucial that DNA damage is repaired efficiently and with fidelity to maintain genomic integrity.
Hammond, E.M. +2 more
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