Journal
EMBO REPORTS
Volume 12, Issue 9, Pages 956-962Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/embor.2011.131
Keywords
cell cycle; chromatin; H3K79; H3K4; Set1
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Funding
- The Netherlands Organization for Scientific Research
- The Netherlands Genomics Initiative
- Kluyver Centre for Genomics of Industrial Fermentation
- University of Groningen
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Post-translational modifications of histone proteins have a crucial role in regulating gene expression. If efficiently re-established after chromosome duplication, histone modifications could help propagate gene expression patterns in dividing cells by epigenetic mechanisms. We used an integrated approach to investigate the dynamics of the conserved methylation of histone H3 Lys 79 (H3K79) by Dot1. Our results show that methylation of H3K79 progressively changes after histone deposition, which is incompatible with a rapid copy mechanism. Instead, methylation accumulates on ageing histones, providing the cell with a timer mechanism to directly couple cell-cycle length to changes in chromatin modification on the nucleosome core.
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