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    Biochem J. 1982 Oct 1;207(1):179-81.

    A thermal-variation method for analysing the rate constants of the Michaelis--Menten mechanism.

    Abstract

    By analysing the variations of saturation velocity and Michaelis constant with temperature and invoking the mathematical constraint represented by the Arrhenius equation, it becomes possible to estimate k+2 and indistinguishably k+1 and k-1 for the Michaelis--Menten mechanism of one-substrate enzyme reactions. Distinction between k+1 and k-1 may be obtained through the determination of isotopic rate effects. This procedure thus provides a basis for evaluating all three rate constants of the one-substrate mechanism, and disproves the suggestion that k+1 and k-1 are intrinsically unobtainable from steady-state kinetic measurements.

    PMID:
    7181857
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC1153841
    Free PMC Article

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