For an enzyme in the absence of inhibitor Vmax is 10 μM.s-1 and its Km is 2 mM. In the presence of a 3 mM inhibitor the apparent Vmax is 6.67 μM.s-1 and the apparent Km is 4 mM.Select the correct statementGroup of answer choicesalpha and alpha' = 3alpha' = 3alpha' = 2alpha = 1.5 and alpha' = 3alpha = 1.5alpha = 3 and alpha' = 1.5
Question
For an enzyme in the absence of inhibitor Vmax is 10 μM.s-1 and its Km is 2 mM. In the presence of a 3 mM inhibitor the apparent Vmax is 6.67 μM.s-1 and the apparent Km is 4 mM.Select the correct statementGroup of answer choicesalpha and alpha' = 3alpha' = 3alpha' = 2alpha = 1.5 and alpha' = 3alpha = 1.5alpha = 3 and alpha' = 1.5
Solution 1
The correct statement is: "alpha = 1.5 and alpha' = 3"
Explanation: In enzyme kinetics, alpha (α) and alpha prime (α') are used to describe the effects of inhibitors on the maximum rate of reaction (Vmax) and the
Solution 2
The alpha (α) and alpha prime (α') values are used to determine the type of inhibition an enzyme is experiencing.
α is the ratio of the apparent Km in the presence of inhibitor to the Km in the absence of inhibitor (Km(app)/Km).
α' is the ratio of the apparent Vmax in the absence of inhibitor to the Vmax in the presence of inhibitor (Vmax/Vmax(app)).
Given the values in the question:
α = Km(app)/Km = 4 mM / 2 mM = 2
α' = Vmax/Vmax(app) = 10 μM.s-1 / 6.67 μM.s-1 = 1.5
So, the correct statement is "alpha = 2 and alpha' = 1.5". However, this option is not given in your list of answer choices.
If we consider the closest match from the given options, then "alpha = 1.5 and alpha' = 3" would be the closest, but it's not the accurate calculation based on the given data.
Similar Questions
For an enzyme in the absence of inhibitor Vmax is 10 μM.s-1 and its Km is 2 mM. In the presence of a 3 mM inhibitor the apparent Vmax is 6.67 μM.s-1 and the apparent Km is 4 mM.
A different mode. The kinetics of an enzyme are measured as a function of substrate concentration in the presence and absence of 100 mM inhibitor.aa) What are the values of V max and Km in the presence of inhibitor?
In the presence of a competitive inhibitor, the apparent Vmax and KM values will
Which statement is correct about the enzyme kinetics shown below?Group of answer choicesalpha = 2.5; alpha' = 5alpha = 1.5; alpha' = 3alpha = 5; alpha' = 2.5alpha = 3; alpha' = 1.5alpha = 3; alpha' = 4alpha = 4; alpha' = 3
Use the Michaelis-Menten equation to complete the enzyme kinetic data set shown below (fill in the blanks), when Vmax is known to have a value of 100 nM/min. Answer with three significant digits.Substrate concentration (µM) Reaction rate (nM/min)4.00 50.05.00 10.0 20.0
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.