Abstract:
:Binding of the thyroid hormone receptor (TR) to thyroid hormone-responsive elements (TREs) is crucial for regulation of gene expression by thyroid hormone. The TR binds to each half-site of a palindromic TRE separately, as a monomer, or simultaneously, as a homodimer. In addition, the TR monomer interacts with a 42-kDa protein that may be responsible for an increase in the apparent size and stability of the TR-TRE complex after incubation with liver nuclear extract. The multiple DNA-binding forms of the TR contact the TRE differently but compete for binding in a dynamic equilibrium which is highly dependent on the relative concentrations of TR and nuclear protein. Thus, protein-protein interactions are likely to determine the context in which the TR binds to target genes and regulates the transcriptional response to thyroid hormone.
journal_name
Mol Cell Bioljournal_title
Molecular and cellular biologyauthors
Lazar MA,Berrodin TJ,Harding HPdoi
10.1128/mcb.11.10.5005subject
Has Abstractpub_date
1991-10-01 00:00:00pages
5005-15issue
10eissn
0270-7306issn
1098-5549journal_volume
11pub_type
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