Spatial organization of the eukaryotic genome and the action of epigenetic mechanisms

Spatial organization of the eukaryotic genome and the action of epigenetic mechanisms Genome activity in eukaryotic cells is regulated at different levels. Long-term activation and repression of gene expression is controlled by epigenetic mechanisms. The main feature of epigenetic mechanisms is that regulatory events, provided by these mechanisms, are preserved in a series of cellular generations upon mitotic division, i.e., in a certain sense are inherited. Most of the epigenetic mechanisms, known so far, act at the level of nucleosomes and the dynamics of nucleosomal fibre. The important signal elements of epigenetic system are DNA methylation, histone modifications, and the inclusion of noncanonical forms of the histones in nucleosomes. In the present study, we substantiate the statement that the large-scale spatial organization of the DNA in eukaryotic cell also plays an important role in the action of epigenetic mechanisms. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Spatial organization of the eukaryotic genome and the action of epigenetic mechanisms

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Publisher
Nauka/Interperiodica
Copyright
Copyright © 2006 by Pleiades Publishing, Inc.
Subject
Biomedicine; Human Genetics; Microbial Genetics and Genomics; Animal Genetics and Genomics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1134/S1022795406120015
Publisher site
See Article on Publisher Site

Abstract

Genome activity in eukaryotic cells is regulated at different levels. Long-term activation and repression of gene expression is controlled by epigenetic mechanisms. The main feature of epigenetic mechanisms is that regulatory events, provided by these mechanisms, are preserved in a series of cellular generations upon mitotic division, i.e., in a certain sense are inherited. Most of the epigenetic mechanisms, known so far, act at the level of nucleosomes and the dynamics of nucleosomal fibre. The important signal elements of epigenetic system are DNA methylation, histone modifications, and the inclusion of noncanonical forms of the histones in nucleosomes. In the present study, we substantiate the statement that the large-scale spatial organization of the DNA in eukaryotic cell also plays an important role in the action of epigenetic mechanisms.

Journal

Russian Journal of GeneticsSpringer Journals

Published: Dec 17, 2006

References

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