Conformational changes of alcohol dehydrogenase
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چکیده
منابع مشابه
pH-dependent Conformational States of Horse Liver Alcohol Dehydrogenase*
The quenching of liver alcohol dehydrogenase protein fluorescence at alkaline pH indicates two conformational states of the enzyme with a pK,, of 9.8 -t0.2, shifted to 10.6 f 0.2 in I&O. NAD’ and 2-p-toluidinonaphthalene-6-sulfonate, a fluorescent probe competitive with coenzyme, bind to the acid conformation of the enzyme. The pK,, of the proteinfluorescence quenching curve is shifted toward 7...
متن کاملGlycerol as an agent eliciting small conformational changes in alcohol dehydrogenase.
Yeast alcohol dehydrogenase is an example of a protein in which the K-m for substrate is substantially decreased by the presence of glycerol. The polyol has the effect at pH 8.0 or above of decreasing K-m and K-s for substrate and of altering both the protein's intrinsic fluorescence and ultraviolet absorption difference spectrum. The relationship between each of thse parameters and glycerol co...
متن کاملpH-dependent conformational states of horse liver alcohol dehydrogenase.
The quenching of liver alcohol dehydrogenase protein fluorescence at alkaline pH indicates two conformational states of the enzyme with a pKa of 9.8+/-0.2, shifted to 10.6+/-0.2 in D2O. NAD+ and 2-p-toluidinonaphthalene-6-sulfonate, a fluorescent probe competitive with coenzyme, bind to the acid conformation of the enzyme. The pKa of the protein-fluorescence quenching curve is shifted toward 7....
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1. The effect of NADH and the non-competitive inhibitor GTP on the optical-rotatory-dispersion properties of glutamate dehydrogenase has been studied. 2. Analysis of the data in terms of the a(0) and b(0) parameters of the Moffitt-Yang equation indicates that a conformational change is induced either by NADH or by GTP in the presence of small amounts of NADH. 3. Sedimentation measurements under...
متن کاملDrosophila Alcohol Dehydrogenase
Drosophila alcohol dehydrogenasc (alcohol:NADf oxidorcduct.ase, EC 1.1.1.1) has attracted attention in several laboratories (l-3) recently. Genetic variants of this enzyme were found, and consequently it was possible to determine its structural locus on the genetic map. The specific activity of alcohol dehydrogenase varies greatly along the t.ime axis of devcloprnent of this organism, and it oc...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section A Foundations of Crystallography
سال: 1981
ISSN: 0108-7673
DOI: 10.1107/s0108767381098504