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Cited by 243

The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.

ATM-dependent DNA Damage-independent Mitotic Phosphorylation of H2AX in Normally Growing Mammalian Cells

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McManus, Kirk J., Hendzel, Michael J.·2005·Molecular Biology of the Cell

Abstract

H2AX is a core histone H2A variant that contains an absolutely conserved serine/glutamine (SQ) motif within an extended carboxy-terminal tail. H2AX phosphorylation at the SQ motif (γ-H2AX) has been shown to increase dramatically upon exogenously introduced DNA double-strand breaks (DSBs). In this study, we use quantitative in situ approaches to investigate the spatial patterning and cell cycle dynamics of γ-H2AX in a panel of normally growing (unirradiated) mammalian cell lines and cultures. We provide the first evidence for the existence of two distinct yet highly discernible γ-H2AX focal populations: a small population of large amorphous foci that colocalize with numerous DNA DSB repair proteins and previously undescribed but much more abundant small foci. These small foci do not recruit proteins involved in DNA DSB repair. Cell cycle analyses reveal unexpected dynamics for γ-H2AX in unirradiated mammalian cells that include an ATM-dependent phosphorylation that is maximal during M phase. Based upon similarities drawn from other histone posttranslational modifications and previous observations in haploinsufficient (H2AX-/+) and null mice (H2AX-/-), γ-H2AX may contribute to the fidelity of the mitotic process, even in the absence of DNA damage, thereby ensuring the faithful transmission of genetic information from one generation to the next.

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Metadata

Authors
McManus, K. J., & Hendzel, M. J.
Venue
Molecular Biology of the Cell
Published
2005-10
Volume
16
Issue
10
Pages
5013-5025
ISSN
  • 1059-1524 (ISSN-L)
  • 1939-4586
OpenAlex
W2097477376
Cited by
243
References
7
FWCI
6.11
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: ATM-dependent DNA Damage-independent Mitotic Phosphorylation of H2AX in Normally Growing Mammalian Cells. https://app.cochat.ai/papers/10.1091/mbc.e05-01-0065
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McManus, K. J., & Hendzel, M. J. (2005). ATM-dependent DNA Damage-independent Mitotic Phosphorylation of H2AX in Normally Growing Mammalian Cells. Molecular Biology of the Cell. https://doi.org/10.1091/mbc.e05-01-0065

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