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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
7
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pubmed:dateCreated |
1992-10-26
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pubmed:abstractText |
A molecular phylogeny for the transforming growth factor-beta (TGF-beta) gene family based on a comparison of nucleotide sequences is proposed. A phylogenetic tree constructed from these sequences shows that the family evolved from a common ancestral gene that came into existence at about the time of arthropod and chordate divergence. This model suggests that the present day TGF-beta gene family consists of four members: TGF-beta 1 (= TGF-beta 4), TGF-beta 2, TGF-beta 3, and TGF-beta 5. The molecular phylogeny and Southern hybridization data also suggest that the proteins for mammalian TGF-beta 1 and chicken TGF-beta 4 are the products of homologous rather than duplicated genes. If the gene duplication event that produced the ancestral gene for TGF-beta 1 occurred before the divergence of birds and mammals, then sufficient time would have elapsed to generate these quite distinct avian and mammalian TGF-beta 1 proteins. Therefore, the TGF-beta family contains four distinct proteins, TGF-beta 1, 2, 3, and 5.
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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 |
Sep
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pubmed:issn |
1044-5498
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
11
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pubmed:geneSymbol |
TGF-&bgr;1,
TGF-&bgr;4
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
497-510
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pubmed:dateRevised |
2010-11-18
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pubmed:meshHeading |
pubmed-meshheading:1388723-Amino Acid Sequence,
pubmed-meshheading:1388723-Animals,
pubmed-meshheading:1388723-Base Sequence,
pubmed-meshheading:1388723-Biological Evolution,
pubmed-meshheading:1388723-Chickens,
pubmed-meshheading:1388723-DNA,
pubmed-meshheading:1388723-Humans,
pubmed-meshheading:1388723-Kinetics,
pubmed-meshheading:1388723-Models, Genetic,
pubmed-meshheading:1388723-Molecular Sequence Data,
pubmed-meshheading:1388723-Multigene Family,
pubmed-meshheading:1388723-Phylogeny,
pubmed-meshheading:1388723-Sequence Homology,
pubmed-meshheading:1388723-Transforming Growth Factor beta
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pubmed:year |
1992
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pubmed:articleTitle |
Evolutionary origins of the transforming growth factor-beta gene family.
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pubmed:affiliation |
Department of Cellular and Molecular Biology, AFRC Institute of Animal Physiology and Genetics Research, Roslin, Midlothian, UK.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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