The following data were obtained in a study of an enzyme known to follow Michaelis-Menten kinetics: Velocity Substrate Added (mM)1.3 12.6 24.1 45.1 65.2 10The Vmax for this enzyme is approximately:
Question
The following data were obtained in a study of an enzyme known to follow Michaelis-Menten kinetics: Velocity Substrate Added (mM)1.3 12.6 24.1 45.1 65.2 10The Vmax for this enzyme is approximately:
Solution
To determine the Vmax for an enzyme that follows Michaelis-Menten kinetics, we need to plot the data and find the point at which the reaction velocity (V) is at its maximum. However, in this case, the Vmax is given as an approximation, which means we can estimate it from the data provided.
The Vmax is the maximum rate achieved by the system, at maximum (saturating) substrate concentrations. In other words, it's the point at which increasing substrate concentration does not increase the reaction rate.
Looking at the data, we can see that the reaction velocity does not increase significantly after the substrate concentration reaches 6 mM (from 4.1 at 4 mM to 5.1 at 6 mM). After this point, even when the substrate concentration increases to 10 mM, the velocity only increases slightly to 5.2.
Therefore, we can approximate that the Vmax for this enzyme is around 5.2.
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