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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1989-9-28
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pubmed:abstractText |
Sea bass (Dicentrarchus labrax L.) liver phosphofructokinase (PFK) presents biphasic kinetics with respect to fructose-6-phosphate (F-6-P) in experiments carried out with crude extract. After the enzyme had been purified, two isozymes have been detected after chromatographic treatment. The two isozymes present different kinetic behaviour PFK-L1, the first eluted phosphofructokinase activity shows positive cooperativity with respect to fructose-6-phosphate and PFK-L2, the second activity fraction, has a Hill coefficient of 0.38 (negative cooperativity). The first isozyme shows less affinity for fructose-6-phosphate than that shown by PFK-L2. The joint kinetics of both isozymes produces a biphasic kinetics with respect to fructose-6-phosphate, similar to that observed in crude extracts.
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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 |
Jun
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pubmed:issn |
0034-9402
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
45
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
179-86
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pubmed:dateRevised |
2003-11-14
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pubmed:meshHeading |
pubmed-meshheading:2528197-Allosteric Regulation,
pubmed-meshheading:2528197-Animals,
pubmed-meshheading:2528197-Bass,
pubmed-meshheading:2528197-Fructosephosphates,
pubmed-meshheading:2528197-Glycolysis,
pubmed-meshheading:2528197-Isoenzymes,
pubmed-meshheading:2528197-Kinetics,
pubmed-meshheading:2528197-Liver,
pubmed-meshheading:2528197-Molecular Weight,
pubmed-meshheading:2528197-Perciformes,
pubmed-meshheading:2528197-Phosphofructokinase-1,
pubmed-meshheading:2528197-Temperature
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pubmed:year |
1989
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pubmed:articleTitle |
Regulation of glycolysis in sea bass liver: phosphofructokinase isozymes.
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pubmed:affiliation |
Departamento de Bioquímica, Facultad de Veterinaria, Universidad Complutense, Madrid, Spain.
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pubmed:publicationType |
Journal Article
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