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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1993-6-4
pubmed:abstractText
We have isolated the TRH receptor (TRH-R) from a rat anterior pituitary cDNA library, determined its sequence and examined its functional characteristics. Expression studies were carried out in Xenopus oocytes and in COS-7 cells. Microinjection of sense RNA transcripts into Xenopus oocytes showed electrophysiological responses of between 800 and 1000 nA under voltage-clamp conditions. COS-7 cells were transiently transfected with the cDNA clone under the control of a cytomegalovirus promoter and inositol phosphate (IP) measurements carried out. In TRH-R transfected cells, TRH (100 nM) produced an approximately twofold increase in total IP production. In-situ hybridization in the rat anterior pituitary revealed a heterogeneous distribution of label, a characteristic pattern of TRH-R expression. The rat 3.3 kb insert coded for a protein of 411 amino acids compared with 393 for the mouse protein. Over its length, the rat TRH-R protein showed considerable homology with that of the mouse, except for a deletion of 232 bp in the 3'-coding region. This deletion did not appear to affect the functional characteristics of the receptor, as shown by electrophysiological studies with Xenopus oocytes and by transfection of the cDNA into COS-7 cells. The sequence given for the 3'-untranslated region is 1.5 kb longer than that reported for the mouse receptor, and extends to the poly(A) tail.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0952-5041
pubmed:author
pubmed:issnType
Print
pubmed:volume
10
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
199-206
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:8387312-Amino Acid Sequence, pubmed-meshheading:8387312-Animals, pubmed-meshheading:8387312-Base Sequence, pubmed-meshheading:8387312-Cell Line, pubmed-meshheading:8387312-DNA, pubmed-meshheading:8387312-Female, pubmed-meshheading:8387312-Membrane Potentials, pubmed-meshheading:8387312-Mice, pubmed-meshheading:8387312-Microinjections, pubmed-meshheading:8387312-Molecular Sequence Data, pubmed-meshheading:8387312-Oocytes, pubmed-meshheading:8387312-Pituitary Gland, Anterior, pubmed-meshheading:8387312-Rats, pubmed-meshheading:8387312-Rats, Wistar, pubmed-meshheading:8387312-Receptors, Neurotransmitter, pubmed-meshheading:8387312-Receptors, Thyrotropin-Releasing Hormone, pubmed-meshheading:8387312-Sequence Homology, Nucleic Acid, pubmed-meshheading:8387312-Thyrotropin-Releasing Hormone, pubmed-meshheading:8387312-Xenopus
pubmed:year
1993
pubmed:articleTitle
Functional expression and molecular characterization of the thyrotrophin-releasing hormone receptor from the rat anterior pituitary gland.
pubmed:affiliation
MRC Reproductive Biology Unit, Centre for Reproductive Biology, Edinburgh, UK.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't