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Recruitment of the SWI-SNF chromatin remodeling complex as a mechanism of gene activation by the glucocorticoid receptor tau 1 activation domain
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2000 (English)In: Molecular and Cellular Biology, ISSN 0270-7306, E-ISSN 1098-5549, Vol. 20, no 6, 2004-2013 p.Article in journal (Refereed) Published
Abstract [en]

The SWI-SNF complex has been shown to alter nucleosome conformation in an ATP-dependent manner, leading to increased accessibility of nucleosomal DNA to transcription factors. In this study, we show that the SWI-SNF complex can potentiate the activity of the glucocorticoid receptor (GR) through the N-terminal transactivation domain, tau 1, in both yeast and mammalian cells. GR-sl can directly interact with purified SWI-SNF complex, and mutations in tau 1 that affect the transactivation activity in vivo also directly affect tau 1 interaction with SWI-SNF. Furthermore, the SWI-SNF complex can stimulate tau 1-driven transcription from chromatin templates in vitro, Taken together, these results support a model in which the GR can directly recruit the SWI-SNF complex to target promoters during glucocorticoid-dependent gene activation. We also provide evidence that the SWI-SNF and SAGA complexes represent independent pathways of tau 1-mediated activation but play overlapping roles that are able to compensate for one another under some conditions.

Place, publisher, year, edition, pages
2000. Vol. 20, no 6, 2004-2013 p.
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Biochemistry and Molecular Biology Cell Biology
URN: urn:nbn:se:sh:diva-15758DOI: 10.1128/MCB.20.6.2004-2013.2000ISI: 000085545200010PubMedID: 10688647OAI: diva2:508111
Available from: 2012-03-07 Created: 2012-03-07 Last updated: 2012-03-07Bibliographically approved

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Wright, Anthony P H
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