文章基本信息

标题：Heterodimerization of thyroid hormone (TH) receptor with H-2RIIBP (RXR beta) enhances DNA binding and TH-dependent transcriptional activation.
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作者：P L Hallenbeck ; M S Marks ; R E Lippoldt 等
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1992
卷号：89
期号：12
页码：5572-5576
DOI：10.1073/pnas.89.12.5572
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：Steroid/TH receptors mediate transcriptional induction of promoters containing hormone response elements (HREs) through an unclear mechanism that involves receptor binding to both hormone and a HRE. Here we demonstrate that both HRE binding and the transcriptional inducing activities of one member of this family, TH receptor, were markedly enhanced by heterodimerization with H-2RIIBP, a non-TH-binding member of the steroid hormone receptor superfamily. H-2RIIBP, the mouse homologue of human retinoic acid-related receptor, was shown to form stable heterodimers with the TH receptor either in solution or when bound to a TH response element. The results presented indicate that it might be necessary for the TH receptor or other members of this superfamily to have specific partners for heterodimer formation to elicit maximal hormone-specific gene regulation from particular HREs.