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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
8
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pubmed:dateCreated |
1980-4-26
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pubmed:abstractText |
Phosphofructokinase from baker's yeast (Saccharomyces cerevisiae) is an octameric enzyme which exhibits complex allosteric behaviour. In contrast to mammalian phosphofructokinase, the enzyme does not show association-dissociation behaviour. A systematic kinetic investigation at pH 7.2 in dependence on the substrates, fructose 6-phosphate and ATP as well as on the effectors AMP and ADP is presented. The results are interpreted in terms of a structure oriented theoretical model. Because the two state model of Monod, Wyman and Changeux proved to be insufficient for interpretation of the experimental data, it was extended to a four state model in which the basic conformations R and T of the enzyme are split into subconformations R1 and R2 as well as T1 and T2, respectively. It is assumed that fructose 6-phosphate and the adenine nucleotides influence different allosteric equilibria. The model permits a precise quantitative description of the experimental data.
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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 |
0001-5318
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
38
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1067-79
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pubmed:dateRevised |
2004-11-17
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pubmed:meshHeading |
pubmed-meshheading:161131-Adenosine Diphosphate,
pubmed-meshheading:161131-Allosteric Regulation,
pubmed-meshheading:161131-Kinetics,
pubmed-meshheading:161131-Macromolecular Substances,
pubmed-meshheading:161131-Mathematics,
pubmed-meshheading:161131-Phosphofructokinase-1,
pubmed-meshheading:161131-Saccharomyces cerevisiae
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pubmed:year |
1979
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pubmed:articleTitle |
Kinetic modelling of yeast phosphofructokinase.
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pubmed:publicationType |
Journal Article
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