The structural basis of direct glucocorticoid-mediated transrepression.
The structural basis of direct glucocorticoid-mediated transrepression.
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DOI:
10.1038/nsmb.2456
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发表时间:
2013-01
影响因子:
16.8
通讯作者:
Ortlund, Eric A.
中科院分区:
文献类型:
--
作者:
Hudson, William H.;Youn, Christine;Ortlund, Eric A.
A newly discovered negative glucocorticoid response element (nGRE) mediates DNA-dependent transrepression by the glucocorticoid receptor (GR) across the genome and plays a major role in immunosuppressive therapy. The nGRE differs dramatically from activating response elements and the mechanism driving GR binding and transrepression is unknown. To unravel the mechanism of nGRE-mediated transrepression by the glucocorticoid receptor, we characterize the interaction between GR and a nGRE in the thymic stromal lymphopoetin (TSLP) promoter. We show using structural and mechanistic approaches that nGRE binding represents a new mode of sequence recognition by human GR and that nGREs prevent receptor dimerization through a unique GR-binding orientation and strong negative cooperativity, ensuring the presence of monomeric GR at repressive elements.
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发表时间:
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期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
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