An Investigation of Imine Formation in the Isocitrate Dehydrogenase Reaction
نویسندگان
چکیده
منابع مشابه
An investigation of imine formation in the isocitrate dehydrogenase reaction.
The occurrence of imine formation at the active site of acetoacetate decarboxylase and several aldolases prompted an attempt to demonstrate this mechanism in the formally similar isocitrate dehydrogenase reaction. Although treatment of isocitrate dehydrogenase with NaBH4 in the presence of cr-ketoglutarate resulted in inactivation of the enzyme, reduction in the presence of labeled a-ketoglutar...
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15 صفحه اولThe equilibrium constant of the isocitrate dehydrogenase reaction.
1. The equilibrium constant for oxidative decarboxylation of isocitrate by NADP(+), catalysed by isocitrate dehydrogenase, was measured in solutions of various ionic strengths and at several temperatures. 2. Thermodynamic values for the reaction were obtained by extrapolation to zero ionic strength, and the heat of reaction was estimated. 3. The effect of Mg(2+) ion concentration on the equilib...
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Phosphoenolpyruvate inhibited Escherichia coli NADP-isocitrate dehydrogenase allosterically (Ki of 0.31 mM) and isocitrate lyase uncompetitively (Ki' of 0.893 mM). Phosphoenolpyruvate enhances the uncompetitive inhibition of isocitrate lyase by increasing isocitrate, which protects isocitrate dehydrogenase from the inhibition, and contributes to the control through the tricarboxylic acid cycle ...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1966
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)96803-1