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Title: Molecular cloning and functional characterization of a mouse bradykinin B1 receptor gene
Authors: Pesquero, J. B.
Pesquero, J. L.
Oliveira, S. M.
Roscher, A. A.
Metzger, R.
Ganten, D.
Bader, M.
Universidade Federal de São Paulo (UNIFESP)
Universidade Federal de Minas Gerais (UFMG)
Issue Date: 7-Mar-1996
Publisher: Academic Press Inc Jnl-comp Subscriptions
Citation: Biochemical and Biophysical Research Communications. San Diego: Academic Press Inc Jnl-comp Subscriptions, v. 220, n. 1, p. 219-225, 1996.
Abstract: The gene encoding a putative mouse bradykinin B1 receptor was cloned from a genomic library by low stringency screening. Analysis of two isolated clones revealed a region which contains an open reading frame uninterrupted by introns and encodes a 334 amino acid protein, which exhibits seven potential transmembrane domains and is 68% identical to the human and rabbit bradykinin B1 receptors, Lipopolysaccharide-treatment induces B1 receptor transcripts in the heart, liver and lung, Stable expression of the coding region in COS-7 cells resulted in high levels of binding sites for the specific B1 ligand des-Arg(10) kallidin (K-d = 1.3 nM; B-max = 51 fmol/mg protein). the rank order of affinity of the receptor for the agonists and antagonists was: des Arg(9)BKdes-Arg(9)Leu(8)BKdrs-Arg(10)kallidin much greater than Hoe-140 = bradykinin. Functional coupling of the cloned receptor was demonstrated by the dose-dependent effect of des-Arg(9)BK on the extracellular acidification rate in stably transfected COS-7 cells. This effect was not produced by bradykinin and could be blocked by the B1 antagonist des-Arg(9)Leu(8)BK. (C) 1996 Academic Press, Inc.
ISSN: 0006-291X
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