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18O-Exchange by Hydrolyzing Enzymes: Extension of the Model to Pi Molecules with Inequivalent Oxygen Atoms in the Bound State
1981
Zeitschrift für Naturforschung C - A Journal of Biosciences
Enzymes causing an exchange of oxygens from P\ with the surrounding water oxygens are very common. A statistical model for the data evaluation for an observation of this oxygen exchange by isotope methods is presented. It is shown how different cases of inequivalence of the four Pi oxygens may be uncovered. The number of reversals of the oxygen exchange step on the enzyme and the apparent second order rate constant for the binding of Pi to the enzyme are obtained as a result of the data fitting
doi:10.1515/znc-1981-7-805
fatcat:n2tujndf2bc5rn4gdtjxltm4p4