Journal
CURRENT OPINION IN GENETICS & DEVELOPMENT
Volume 17, Issue 5, Pages 408-414Publisher
CURRENT BIOLOGY LTD
DOI: 10.1016/j.gde.2007.08.003
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- Wellcome Trust Funding Source: Medline
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Compartmentalized distribution of functional components is a hallmark of the eukaryotic nucleus. Technological advances in recent years have provided unprecedented insights into the role of chromatin organization and interactions of various structural-functional components toward gene regulation. SATB1, the global chromatin organizer and transcription factor, has emerged as a key factor integrating higher-order chromatin architecture with gene regulation. Studies in recent years have unraveled the role of SATB1 in organization of chromatin 'loopscape' and its dynamic nature in response to physiological stimuli. SATB1 organizes the MHC class-I locus into distinct chromatin loops by tethering MARs to nuclear matrix at fixed distances. Silencing of SATB1 mimics the effects of IFN gamma treatment on chromatin loop architecture of the MHC class-I locus and altered expression of genes within the locus. At genome-wide level, SATB1 seems to play a role in organization of the transcriptionally poised chromatin.
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