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- W2031146082 endingPage "297" @default.
- W2031146082 startingPage "283" @default.
- W2031146082 abstract "Abstract A sequence variant of histone H2A called H2AX is one of the key components of chromatin involved in DNA damage response induced by different genotoxic stresses. Phosphorylated H2AX (γH2AX) is rapidly concentrated in chromatin domains around DNA double-strand breaks (DSBs) after the action of ionizing radiation or chemical agents and at stalled replication forks during replication stress. γH2AX foci could be easily detected in cell nuclei using immunofluorescence microscopy that allows to use γH2AX as a quantitative marker of DSBs in various applications. H2AX is phosphorylated in situ by ATM, ATR, and DNA-PK kinases that have distinct roles in different pathways of DSB repair. The γH2AX serves as a docking site for the accumulation of DNA repair proteins, and after rejoining of DSBs, it is released from chromatin. The molecular mechanism of γH2AX dephosphorylation is not clear. It is complicated and requires the activity of different proteins including phosphatases and chromatin-remodeling complexes. In this review, we summarize recently published data concerning the mechanisms and kinetics of γH2AX loss in normal cells and tissues as well as in those deficient in ATM, DNA-PK, and DSB repair proteins activity. The results of the latest scientific research of the low-dose irradiation phenomenon are presented including the bystander effect and the adaptive response estimated by γH2AX detection in cells and tissues." @default.
- W2031146082 created "2016-06-24" @default.
- W2031146082 creator A5057787992 @default.
- W2031146082 creator A5060494193 @default.
- W2031146082 creator A5072721788 @default.
- W2031146082 date "2011-06-25" @default.
- W2031146082 modified "2023-10-02" @default.
- W2031146082 title "H2AX phosphorylation at the sites of DNA double-strand breaks in cultivated mammalian cells and tissues" @default.
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