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Differential Histone H3 Lys-9 and Lys-27 Methylation Profiles on the X Chromosome

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Rougeulle, Claire, Chaumeil, Julie, Sarma, Kavitha, Allis, C. David, Reinberg, Danny, Avner, Philip, Heard, Edith·2004·Molecular and Cellular Biology

Abstract

Histone H3 tail modifications are among the earliest chromatin changes in the X-chromosome inactivation process. In this study we investigated the relative profiles of two important repressive marks on the X chromosome: methylation of H3 lysine 9 (K9) and 27 (K27). We found that both H3K9 dimethylation and K27 trimethylation characterize the inactive X in somatic cells and that their relative kinetics of enrichment on the X chromosome as it undergoes inactivation are similar. However, dynamic changes of H3K9 and H3K27 methylation on the inactivating X chromosome compared to the rest of the genome are distinct, suggesting that these two modifications play complementary and perhaps nonredundant roles in the establishment and/or maintenance of X inactivation. Furthermore, we show that a hotspot of H3K9 dimethylation 5' to Xist also displays high levels of H3 tri-meK27. However, analysis of this region in G9a mutant embryonic stem cells shows that these two methyl marks are dependent on different histone methyltransferases.

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Metadata

Authors
Rougeulle, C., Chaumeil, J., Sarma, K., Allis, C. D., Reinberg, D., Avner, P., & Heard, E.
Venue
Molecular and Cellular Biology
Published
2004-06
Volume
24
Issue
12
Pages
5475-5484
ISSN
  • 0270-7306 (ISSN-L)
  • 1098-5549
OpenAlex
W2142928043
Cited by
215
References
3
FWCI
6.67
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Differential Histone H3 Lys-9 and Lys-27 Methylation Profiles on the X Chromosome. https://app.cochat.ai/papers/10.1128/mcb.24.12.5475-5484.2004
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Rougeulle, C., Chaumeil, J., Sarma, K., Allis, C. D., Reinberg, D., Avner, P., & Heard, E. (2004). Differential Histone H3 Lys-9 and Lys-27 Methylation Profiles on the X Chromosome. Molecular and Cellular Biology. https://doi.org/10.1128/mcb.24.12.5475-5484.2004

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