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Molecular basis and biological function of variability in spatial genome organization.


ABSTRACT: The complex three-dimensional organization of genomes in the cell nucleus arises from a wide range of architectural features including DNA loops, chromatin domains, and higher-order compartments. Although these features are universally present in most cell types and tissues, recent single-cell biochemistry and imaging approaches have demonstrated stochasticity in transcription and high variability of chromatin architecture in individual cells. We review the occurrence, mechanistic basis, and functional implications of stochasticity in genome organization. We summarize recent observations on cell- and allele-specific variability of genome architecture, discuss the nature of extrinsic and intrinsic sources of variability in genome organization, and highlight potential implications of structural heterogeneity for genome function.

SUBMITTER: Finn EH 

PROVIDER: S-EPMC7421438 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature

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Molecular basis and biological function of variability in spatial genome organization.

Finn Elizabeth H EH   Misteli Tom T  

Science (New York, N.Y.) 20190901 6457


The complex three-dimensional organization of genomes in the cell nucleus arises from a wide range of architectural features including DNA loops, chromatin domains, and higher-order compartments. Although these features are universally present in most cell types and tissues, recent single-cell biochemistry and imaging approaches have demonstrated stochasticity in transcription and high variability of chromatin architecture in individual cells. We review the occurrence, mechanistic basis, and fun  ...[more]

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