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- W2003455215 abstract "A method for determining the rate of exchange of the carbonyl oxygen in α-ketoglutarate using gas chromatography-mass spectrometry is described. The method is based on a new procedure for quenching the exchange reaction by rapid oxidative decarboxylation of the α-ketoacid to the next lower homologous carboxylic acid using concentrated hydrogen peroxide. Using this method the rate constant for carbonyl oxygen exchange in α-ketoglutarate in 0.1 m imidazole buffer, pH 7.5, was found to be (2.8 ± 0.2) × 10−3 s−1 at 25°C. Data obtained using this technique suggest that hydration is the mechanism for carbonyl oxygen exchange in α-ketoacids. The method is also applicable to the measurement of oxygen exchange rates of other α-ketoacids free in solution and bound in enzyme complexes." @default.
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- W2003455215 date "1982-07-01" @default.
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- W2003455215 title "Determination of carbonyl oxygen exchange rates in α-ketoacids by gas chromatography-mass spectrometry" @default.
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- W2003455215 doi "https://doi.org/10.1016/0003-2697(82)90449-3" @default.
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