Abstract:In the absence of triiodothyronine (T3), thyroid hormone receptors (TRs) repress transcription of many genes; in the presence of T3, TRs activate transcription of those same genes. Both of these events are dependent on interactions between TRs and other nuclear proteins. TRs bind to specific DNA sequences, generally found in the 5' flanking regions of target genes. In the unliganded state, TRs interact with one of several corepressor proteins. These proteins, in turn, interact with a series of other proteins, … Show more
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