A kinetic study of an intestinal peptidase using glycylglycine as the substrate produced the experimental data shown in the table. glycylglycine + H₂O → 2 glycine [S] (mm) 1.5 2.0 3.0 4.0 8.0 16.0 Product formed (µmol min¹¹) 0.21 0.24 0.28 0.33 0.40 0.45 Calculate the standard error of regression (SER) for the Lineweaver-Burk slope and the Eadie-Hofstee slope to compare the precision of each.

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Calculate the standard error of regression (SER) for the Lineweaver–Burk slope and the Eadie–Hofstee slope to compare the precision of each.

Eadie–Hofstee SER:   it is not 0.128, 0.028, 0.136, or  0.1362 or 0.013. 

 

There are several ways to transform the Michaelis-Menten
equation so as to plot data and derive kinetic parameters, each
with different advantages depending on the data set being
analyzed. One transformation of the Michaelis-Menten
equation is the Lineweaver-Burk, or double-reciprocal,
equation. Multiplying both sides of the Lineweaver-Burk
equation by Vmax and rearranging gives the
Eadie Hofstee equation.
Vo = -(Km)
[S]
+ Vmax
Vo
Consider the plot of Vo versus for an enzyme-catalyzed
[S]
reaction. The control reactions (blue curve) did not contain
any inhibitor.
curve B
curve C
curve A
V₁
V mas
A
B
Slope =-K
V₁
[S]
Which of the other curves (A, B, or C) depicts this enzyme's activity in the presence of a competitive inhibitor?
C
J
mak
K
m
Transcribed Image Text:There are several ways to transform the Michaelis-Menten equation so as to plot data and derive kinetic parameters, each with different advantages depending on the data set being analyzed. One transformation of the Michaelis-Menten equation is the Lineweaver-Burk, or double-reciprocal, equation. Multiplying both sides of the Lineweaver-Burk equation by Vmax and rearranging gives the Eadie Hofstee equation. Vo = -(Km) [S] + Vmax Vo Consider the plot of Vo versus for an enzyme-catalyzed [S] reaction. The control reactions (blue curve) did not contain any inhibitor. curve B curve C curve A V₁ V mas A B Slope =-K V₁ [S] Which of the other curves (A, B, or C) depicts this enzyme's activity in the presence of a competitive inhibitor? C J mak K m
A kinetic study of an intestinal peptidase using glycylglycine as the substrate produced the experimental data shown in the table.
glycylglycine + H₂O → 2 glycine
[S] (MM)
1.5
2.0
3.0
4.0
8.0
16.0
Calculate the standard error of regression (SER) for the Lineweaver-Burk slope and the Eadie-Hofstee slope to compare the
precision of each.
Product formed (µmol min-¹)
0.21
0.24
0.28
0.33
0.40
0.45
Lineweaver-Burk SER: 0.182
Eadie Hofstee SER:
0.128
Incorrect
μmol min
μmol min
-1
Transcribed Image Text:A kinetic study of an intestinal peptidase using glycylglycine as the substrate produced the experimental data shown in the table. glycylglycine + H₂O → 2 glycine [S] (MM) 1.5 2.0 3.0 4.0 8.0 16.0 Calculate the standard error of regression (SER) for the Lineweaver-Burk slope and the Eadie-Hofstee slope to compare the precision of each. Product formed (µmol min-¹) 0.21 0.24 0.28 0.33 0.40 0.45 Lineweaver-Burk SER: 0.182 Eadie Hofstee SER: 0.128 Incorrect μmol min μmol min -1
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