XB-ART-24084
J Biol Chem
1992 Jan 15;2672:733-8.
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Genomic organization and alternative promoter usage of the two thyroid hormone receptor beta genes in Xenopus laevis.
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Each of the two Xenopus laevis thyroid hormone receptor beta genes is at least 70 kilobases in length with similar intron-exon organization. There are up to eight alternatively spliced exons in the 5'-untranslated region. Excluding the extreme amino terminus, each receptor is encoded by six exons spanning about 6 kilobases of the genome, in which each of the two zinc fingers that comprise the DNA-binding domain is encoded by a separate exon and the hormone-binding domain is split into three exons. The last exon of the coding region also contains at least 600 base pairs of the 3'-untranslated region, which is about 8 kilobases. Each of the receptor genes has two promoters and just one of them is up-regulated in tadpoles by the administration of thyroid hormone.
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???displayArticle.link??? J Biol Chem