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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1980-10-27
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pubmed:abstractText |
The effect of p-chloromercurybenzoate (p-CMB) on the MDH-activity of cytosol and submitochondrial fractions (matrix and inner membranes) of rat liver is studied in different buffer systems with identical pH. It is found that p-CMB has two effects on the MDH-activity, depending on the subcellular localization of the enzyme and on the type of buffer used: inhibitory (for the enzyme of the three fractions in HEPES-NaOH and potassium-phosphate buffers) and activating (for the enzyme of the submitochondrial fractions in Tris-HCI buffer). The effect of the SH-reagent on the formation and stability of enzyme-substrate complexes in the different buffers is also studied, as well as the temperature dependence of the p-CMB action on the MDH-activity of the preparations. It is found that the association of m-MDH with the inner mitochondrial membranes does not change its kinetic behaviour. The probable different conformation of the mitochondrial enzyme in the different buffer systems is discussed.
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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:issn |
0323-9950
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
6
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
53-9
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:7405594-Animals,
pubmed-meshheading:7405594-Buffers,
pubmed-meshheading:7405594-Chloromercuribenzoates,
pubmed-meshheading:7405594-Cytosol,
pubmed-meshheading:7405594-Enzyme Activation,
pubmed-meshheading:7405594-Liver,
pubmed-meshheading:7405594-Malate Dehydrogenase,
pubmed-meshheading:7405594-Male,
pubmed-meshheading:7405594-NAD,
pubmed-meshheading:7405594-Rats,
pubmed-meshheading:7405594-Subcellular Fractions,
pubmed-meshheading:7405594-Temperature,
pubmed-meshheading:7405594-Time Factors
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pubmed:year |
1980
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pubmed:articleTitle |
Effect of p-chloromercurybenzoate on the MDH-activity of cytosol and rat liver submitochondrial fractions in different buffers.
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pubmed:publicationType |
Journal Article,
In Vitro
|