Journal
EPIGENETICS
Volume 6, Issue 5, Pages 552-559Publisher
TAYLOR & FRANCIS INC
DOI: 10.4161/epi.6.5.15082
Keywords
chromatin; histone methylation; nucleosome positioning; nucleosome stability; origin; post-translational modification; replication
Funding
- NIH [R01GM083024]
- AHA [0865097E]
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The importance of local chromatin structure in regulating replication initiation has become increasingly apparent. Most recently, histone methylation and nucleosome positioning have been added to the list of modifications demonstrated to regulate origins. In particular, the methylation states of H3K4, H3K36 and H4K20 have been associated with establishing active, repressed or poised origins depending on the timing and extent of methylation. The stability and precise positioning of nucleosomes has also been demonstrated to affect replication efficiency. Although it is not yet clear how these modifications alter the behavior of specific replication factors, ample evidence establishes their role in maintaining coordinated replication. This review will summarize recent advances in understanding these aspects of chromatin structure in DNA replication origin control.
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