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Characterization of the mouse thyrotrophin-releasing hormone receptor gene: an exon corresponds to a deletion in the rat cDNA.

Abstract：

:The cloning and characterization of the mouse TRH receptor (TRH-R) gene revealed an untranslated exon (exon 1), a single intron and an upstream dinucleotide repeat sequence (d(TG)16.d(AG)21) in the 5' untranslated region (UTR). The coding region was contained almost entirely on a second exon (exon 2), with the final amino acid and stop codon at the COOH terminus of the gene encoded by a third exon (exon 3) flanked by two introns. The 3' UTR was contained on the remainder of exon 3 and on the final exon (exon 4). Exon 3 (228 bp) corresponds exactly to a 228 bp deletion that exists in the rat TRH-R cDNA, but not in the mouse cDNA. The mouse TRH-R cDNA encodes a protein of 393 amino acids which is 96% homologous to the rat TRH-R protein of 412 amino acids, but is 19 amino acids shorter at its COOH terminus. The coding sequence for these 19 amino acids (plus 1 extra amino acid) does exist in the mouse TRH-R gene, but the sequence is encoded by exon 4, separated from the rest of the coding region by the stop codon and 223 bp of 3' UTR on exon 3. Splicing of exon 3 in the mouse TRH-R gene would remove the last amino acid, the stop codon and the 223 bp of 3' UTR, allowing transcription to continue into the 3' UTR on exon 4, which encodes the 19 extra amino acids found in the rat cDNA.(ABSTRACT TRUNCATED AT 250 WORDS)

journal_name

J Mol Endocrinol

journal_title

Journal of molecular endocrinology

authors

Duthie SM,Taylor PL,Eidne KA

doi

10.1677/jme.0.0110141

subject

Has Abstract

pub_date

1993-10-01 00:00:00

pages

141-9

issue

2

eissn

0952-5041

issn

1479-6813

journal_volume

11

pub_type

杂志文章

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