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A fractal model for nuclear organization: current evidence and biological implications.

Abstract : Chromatin is a multiscale structure on which transcription, replication, recombination and repair of the genome occur. To fully understand any of these processes at the molecular level under physiological conditions, a clear picture of the polymorphic and dynamic organization of chromatin in the eukaryotic nucleus is required. Recent studies indicate that a fractal model of chromatin architecture is consistent with both the reaction-diffusion properties of chromatin interacting proteins and with structural data on chromatin interminglement. In this study, we provide a critical overview of the experimental evidence that support a fractal organization of chromatin. On this basis, we discuss the functional implications of a fractal chromatin model for biological processes and propose future experiments to probe chromatin organization further that should allow to strongly support or invalidate the fractal hypothesis.
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https://www.hal.inserm.fr/inserm-00718260
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Aurélien Bancaud, Christophe Lavelle, Sébastien Huet, Jan Ellenberg. A fractal model for nuclear organization: current evidence and biological implications.. Nucleic Acids Research, Oxford University Press, 2012, 40 (18), pp.8783-92. ⟨10.1093/nar/gks586⟩. ⟨inserm-00718260⟩

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