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Estrogen receptor interaction with estrogen response elements.
1Department of Biochemistry and Molecular Biology, University of Louisville School of Medicine, Louisville, KY 40292, USA. carolyn.klinge@louisville.edu
Nucleic Acids Research
|July 14, 2001
Summary
Estrogen receptor (ER) binding to DNA response elements (EREs) and estradiol (E2)-induced gene activation vary. ERE sequence changes impact ERalpha binding affinity and transcriptional activity, but not always linearly.
Area of Science:
- Molecular Endocrinology
- Genetics
- Biochemistry
Background:
- The estrogen receptor (ER) is a crucial ligand-activated transcription factor.
- Mammalian ER is encoded by two genes: ERalpha and ERbeta.
- ER binds DNA estrogen response elements (EREs) to regulate gene expression.
Purpose of the Study:
- To review how natural and synthetic variations in ERE sequences affect ER-ERE binding affinity.
- To summarize the impact of ERE variations on estradiol (E2)-induced transcriptional activity.
Main Methods:
- Literature review of existing studies on ER-ERE interactions.
- Analysis of data on ERalpha and ERbeta binding affinities and transcriptional activity.
Main Results:
- Few natural EREs have been comprehensively studied for both ERalpha binding and transcriptional activity.
- Limited data exists on ERbeta's response to ERE sequence variations.
- ERalpha binding affinity does not always correlate linearly with E2-induced transcriptional activity.
Conclusions:
- Cellular coactivator levels, protein phosphorylation, and chromatin structure influence ER activity.
- Understanding ERE sequence impact is crucial for deciphering ER-mediated gene regulation.