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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
|
pubmed:dateCreated |
1997-3-18
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pubmed:databankReference | |
pubmed:abstractText |
cDNAs for three isotypes of inhibitor-2(I-2), I-2 alpha 1, I-2 alpha 2 and I-2 beta were isolated from a rat testis library. I-2 alpha 2 and I-2 beta are new forms. The former is an alternatively spliced form of I-2 alpha 1, encoding a protein with substitution of three amino acids for 14 amino acids of the I-2 alpha 1 protein at the C-terminus. The latter is derived from a different gene and encodes a 126-amino-acid protein having highly conserved regions with the I-2 alpha 1 protein from amino acid positions 22-47 and 111-126. I-2 alpha 2 and I-2 beta are expressed exclusively in the testis, and the expressions of all three forms of I-2 coincide with sperm cell maturation. The half-maximal inhibitory concentration of the GST-I-2 alpha 2 fusion protein on the PP1 gamma 2 catalytic subunit is the same as that of GST-I-2 alpha 1, being 10 nM. However, the half-maximal inhibitory concentration of GST-1-2 beta is 100-fold higher, being 1 microM. GST-I-2 beta showed no competition with GST-I-2 alpha 1. and its biological significance is unknown.
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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 |
Dec
|
pubmed:issn |
0014-2956
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
15
|
pubmed:volume |
242
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
793-8
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pubmed:dateRevised |
2007-11-15
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pubmed:meshHeading |
pubmed-meshheading:9022711-Amino Acid Sequence,
pubmed-meshheading:9022711-Animals,
pubmed-meshheading:9022711-DNA, Complementary,
pubmed-meshheading:9022711-Gene Expression Regulation, Enzymologic,
pubmed-meshheading:9022711-Male,
pubmed-meshheading:9022711-Molecular Sequence Data,
pubmed-meshheading:9022711-Phosphoprotein Phosphatases,
pubmed-meshheading:9022711-Proteins,
pubmed-meshheading:9022711-Rats,
pubmed-meshheading:9022711-Restriction Mapping,
pubmed-meshheading:9022711-Sequence Alignment,
pubmed-meshheading:9022711-Sequence Homology, Amino Acid,
pubmed-meshheading:9022711-Testis,
pubmed-meshheading:9022711-Tissue Distribution
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pubmed:year |
1996
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pubmed:articleTitle |
Identification and characterization of three isotypes of protein phosphatase inhibitor-2 and their expression profiles during testis maturation in rats.
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pubmed:affiliation |
Carcinogenesis Division, National Cancer Center Research Institute, Tokyo, Japan.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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