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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
8
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pubmed:dateCreated |
1990-12-5
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pubmed:abstractText |
Inhibin is a gonadal protein hormone that suppresses the secretion of FSH from pituitary gonadotrophs. It has previously been characterized as a heterodimer of two dissimilar subunits (alpha, 18 kilodaltons and beta, 14 kilodaltons) the smaller of which exists in two forms (beta A and beta B) and can form dimers that stimulate the secretion of FSH. In the present work, cDNA clones encoding the inhibin alpha- and beta A-subunits have been isolated from rat ovary and characterized. The alpha-inhibin cDNA predicts a precursor protein of 366 amino acids containing the 133 amino acid mature alpha-subunit at its COOH-terminus. The beta A-inhibin cDNA predicts a precursor protein of 424 amino acids containing the 116 amino acid beta A-subunit at its COOH-terminus. Analysis of rat ovarian RNA indicates that alpha-inhibin mRNA levels are stimulated by PMSG treatment in vivo. In cultured granulosa cells, FSH also stimulates alpha-inhibin mRNA, and the FSH effect is suppressed by cotreatment with GnRH. Hybridization in situ to rat ovarian tissue demonstrates that both the alpha-inhibin and beta A-inhibin mRNAs are specifically expressed in granulosa cells of the developing follicles.
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pubmed:grant | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Aug
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pubmed:issn |
0888-8809
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
1
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
561-8
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:3153478-Amino Acid Sequence,
pubmed-meshheading:3153478-Animals,
pubmed-meshheading:3153478-Base Sequence,
pubmed-meshheading:3153478-Blotting, Northern,
pubmed-meshheading:3153478-Cells, Cultured,
pubmed-meshheading:3153478-Cloning, Molecular,
pubmed-meshheading:3153478-DNA,
pubmed-meshheading:3153478-Female,
pubmed-meshheading:3153478-Granulosa Cells,
pubmed-meshheading:3153478-Inhibins,
pubmed-meshheading:3153478-Molecular Sequence Data,
pubmed-meshheading:3153478-Peptide Fragments,
pubmed-meshheading:3153478-RNA, Messenger,
pubmed-meshheading:3153478-Rats,
pubmed-meshheading:3153478-Rats, Inbred Strains
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pubmed:year |
1987
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pubmed:articleTitle |
Rat inhibin: molecular cloning of alpha- and beta-subunit complementary deoxyribonucleic acids and expression in the ovary.
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pubmed:affiliation |
Department of Biochemistry, Molecular Biology and Cell Biology, Northwestern University, Evanston, Illinois 60201.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, U.S. Gov't, Non-P.H.S.,
Research Support, Non-U.S. Gov't
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