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Jaber BM Gao T Huang L Karmakar S Smith CL 《Molecular endocrinology (Baltimore, Md.)》2006,20(11):2695-2710
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Reciprocal recruitment of DRIP/mediator and p160 coactivator complexes in vivo by estrogen receptor 总被引:9,自引:0,他引:9
Burakov D Crofts LA Chang CP Freedman LP 《The Journal of biological chemistry》2002,277(17):14359-14362
Two functionally distinct classes of coactivators are recruited by liganded estrogen receptor, the DRIP/Mediator complex and p160 proteins, although the relative dynamics of recruitment is unclear. Previously, we have shown a direct, estradiol-dependent interaction between the DRIP205 subunit of the DRIP complex and the estrogen receptor (ER) AF2 domain. Here we demonstrate the in vivo recruitment of other endogenous DRIP subunits to ER in response to estradiol treatment in MCF-7 cells. To explore the relationship between DRIP and p160 coactivators, we examined the kinetics of coactivator recruitment to the ER target promoter, pS2, by chromatin immunoprecipitation. We observed a cyclic association and dissociation of coactivators with the promoter, with recruitment of p160s and DRIPs occurring in opposite phases, suggesting an exchange between these coactivator complexes at the target promoter. 相似文献
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Chen D Lucey MJ Phoenix F Lopez-Garcia J Hart SM Losson R Buluwela L Coombes RC Chambon P Schär P Ali S 《The Journal of biological chemistry》2003,278(40):38586-38592