Structure and expression of a human oxytocin receptor

JUST before the onset of labour, uterine myometrium becomes extremely sensitive to oxytocin 1 for which it is a primary target tissue, because of a dramatic increase in the number of oxytocin receptors 2,3 . We report here the structure and expression of the human oxytocin receptor complementary DNA...

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Veröffentlicht in:Nature (London) 1992-04, Vol.356 (6369), p.526-529
Hauptverfasser: Kimura, Tadashi, Tanizawa, Osamu, Mori, Kensaku, Brownstein, Michael J., Okayama, Hiroto
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container_end_page 529
container_issue 6369
container_start_page 526
container_title Nature (London)
container_volume 356
creator Kimura, Tadashi
Tanizawa, Osamu
Mori, Kensaku
Brownstein, Michael J.
Okayama, Hiroto
description JUST before the onset of labour, uterine myometrium becomes extremely sensitive to oxytocin 1 for which it is a primary target tissue, because of a dramatic increase in the number of oxytocin receptors 2,3 . We report here the structure and expression of the human oxytocin receptor complementary DNA isolated by expression cloning. The encoded receptor is a 388-amino-acidpolypeptide with 7 transmembrane domains typical of G protein-coupled receptors. The oxytocin receptor, expressed in Xenopus oocytes, specifically responds to oxytocin and induces an inward membrane current. Messenger RNAs for the receptor are of two sizes, 3.6 kilobases in breast, and 4.4 kilobases in ovary, uterine endometrium and myometrium. The mRNA level in the myometrium is very high at term. We conclude that the increase in receptor number in the myometrium at labour is, at least in part, due to the increase in mRNA.
doi_str_mv 10.1038/356526a0
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identifier ISSN: 0028-0836
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source MEDLINE; SpringerLink Journals; Nature Journals Online
subjects Amino Acid Sequence
Animals
Arginine Vasopressin - pharmacology
Base Sequence
Biological and medical sciences
Blotting, Northern
Cell receptors
Cell structures and functions
Cloning
Cloning, Molecular
Deoxyribonucleic acid
DNA
Dose-Response Relationship, Drug
Female
Fundamental and applied biological sciences. Psychology
genes
Hormone receptors. Growth factor receptors. Cytokine receptors. Prostaglandin receptors
Humanities and Social Sciences
Humans
letter
Membrane Potentials - drug effects
Molecular and cellular biology
Molecular Sequence Data
multidisciplinary
Myometrium - metabolism
Oocytes - physiology
ovaries
Oxytocin - pharmacology
Pregnancy
Receptors, Angiotensin - chemistry
Receptors, Angiotensin - genetics
Receptors, Angiotensin - metabolism
Receptors, Oxytocin
RNA, Messenger - analysis
Science
Science (multidisciplinary)
Sequence Homology, Nucleic Acid
uterus
Xenopus
title Structure and expression of a human oxytocin receptor
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