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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1992-8-20
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pubmed:abstractText |
The mechanism of oxygen radical-dependent activation of hepatic microsomal glutathione S-transferase by hydrogen peroxide was studied. Glutathione S-transferase activity in liver microsomes was increased 1.5-fold by incubation with 0.75 mM hydrogen peroxide at 37 degrees C for 10 min, and the increase in activity was reversed by incubation with dithiothreitol. Purified glutathione S-transferase was also activated by hydrogen peroxide after incubation at room temperature, and the increase in the activity was also reversed by dithiothreitol. Immunoblotting with anti-microsomal glutathione S-transferase antibodies after sodium dodecyl sulfate-polyacrylamide gel electrophoresis of hydrogen peroxide-treated microsomes or purified glutathione S-transferase revealed the presence of a glutathione S-transferase dimer. These results indicate that the hydrogen peroxide-dependent activation of the microsomal glutathione S-transferase is associated with the formation of a protein dimer.
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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 |
0003-9861
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
1
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pubmed:volume |
296
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
611-6
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:1632648-Animals,
pubmed-meshheading:1632648-Dithiothreitol,
pubmed-meshheading:1632648-Electrophoresis, Polyacrylamide Gel,
pubmed-meshheading:1632648-Enzyme Activation,
pubmed-meshheading:1632648-Glutathione Transferase,
pubmed-meshheading:1632648-Hydrogen Peroxide,
pubmed-meshheading:1632648-Immunoblotting,
pubmed-meshheading:1632648-Macromolecular Substances,
pubmed-meshheading:1632648-Male,
pubmed-meshheading:1632648-Microsomes, Liver,
pubmed-meshheading:1632648-Rats,
pubmed-meshheading:1632648-Rats, Inbred Strains
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pubmed:year |
1992
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pubmed:articleTitle |
Activation of rat liver microsomal glutathione S-transferase by hydrogen peroxide: role for protein-dimer formation.
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pubmed:affiliation |
Laboratory of Physiology and Pharmacology, School of Health Sciences, University of the Ryukyus, Okinawa, Japan.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.
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