To calculate the turnover number of an enzyme, you need to know: Select one: A. the enzyme concentration. B. the initial velocity of the catalyzed reaction at [S] >> Km. C. the initial velocity of the catalyzed reaction at low [S]. D. the Km for the substrate. E. both the enzyme concentration and the initial velocity of the catalyzed reaction at [S] >> Km.
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To calculate the turnover number of an enzyme (Kcat), you need to know: 1. the enzyme concentration 2. the initial velocity of the catalyzed reaction at [S] >> Km 3. the initial velocity of the catalyzed reaction at [S] << Km 4. the Km for the substrate 5. Km/2
Sri K.
You measure the rate of an enzyme-catalyzed reaction at different initial substrate concentrations under Michaelis-Menten conditions. Assuming you have knowledge of the concentration of enzyme in the reaction, which of the following parameters can be estimated from the results of these measurements? A. The maximal velocity of the enzyme at saturating substrate concentrations. B. (k-1 + k2)/k1 C. The turnover number. D. All of the above.
Adi S.
The Michaelis-Menten equation for the enzyme chymotrypsin is $$v=\frac{0.14[\mathrm{S}]}{0.015+[\mathrm{S}]}$$ where $v$ is the rate of an enzymatic reaction and $[\mathrm{S}]$ is the concentration of a substrate S. Calculate $d v / d[\mathrm{S}]$ and interpret it.
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