Nuclear receptor estrogen receptor alpha (ER alpha) controls the expression of hundreds of genes responsible for target cell phenotypic properties, but the relative importance of direct versus tethering mechanisms of DNA binding has not been established. In this first report, we examine the genome-wide chromatin localization of an altered-specificity mutant ER with a DNA binding domain deficient in binding to estrogen response element (ERE)-containing DNA (DBDmut ER) versus wild-type ER alpha. Using high-throughput sequencing of ER chromatin immunoprecipitations (ChIP-Seq) and mRNA transcriptional profiling, we show that direct ERE binding is required for most of (75%) estrogen-dependent gene regulation and 90% of hormone-dependent recruitment of ER to genomic binding sites.
Regulated genes (or markers): 5713
Regulatory sequences (genomic): 11192
Regulatory sequences (artificial): 0
Transcription factors: 1
Transcription factor profiles: 0
Annotated publications: 1
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