8. A chemist obtains the following Lineweaver-Burk plots for an enzyme catalyzed reaction in the ...
8. A chemist obtains the following Lineweaver-Burk plots for an enzyme catalyzed reaction in the absence and presence of two different inhibitors, A and B. The linear fit for no inhibition is: 1 ?0 = 302.6 1 [?] + 1.96 × 105 The linear fit for inhibitor A is: 1 ?0 = 757.8 1 [?] + 2.03 × 105 And the linear fit for inhibitor B is: 1 ?0 = 1015.3 1 [?] + 5.95 × 105 a) Determine the...
The Lineweaver-Burk plots shown below are for enzyme catalyzed reactions. The reaction without and inhibitor is shown in blue. The reaction with an inhibitor is shown in red. Identify the type of inhibition in each plot. with I with I 1/vo without I without I 1/[S] 1/[S] with without I without I 1/[S] 1/[S] with I without I 1/[S] Problem 4 For each plot above describe how Km and Vmax are affected by the inhibitor.
2. If an inhibitor competitively inhibits an enzyme, use Michaelis-Menten and Lineweaver-Burk plots to illustrate how the enzyme kinetics differ in the presence and absence of the inhibitor. (20 pts)
An enzyme-catalyzed reaction to the presence of 5 nM of reversible inhibitor yields a Vmax value that is 80% of the value in absence of the inhibitor. The KMvalue is unchanged. a) what type of inhibition is occurring? b) what proportion of the enzyme molecule will have bound inhibitor? c) Draw the Lineweaver-Burk (known as double-reciprocal plot) for uninhibited and inhibited reaction. SHOW ALL YOUR WORK PLEASE
Write the equations that describe the Michaelis-Menten and the Lineweaver-Burk double-reciprocal plots. Draw examples of each plot, demonstrating how Km and Vmax can be determined. On the same graphs, draw another plot where the same enzyme-catalyzed reaction is subjected to inhibition by a competitive inhibitor.
For a report, after plotting the lineweaver-burk plot for a protease enzyme with and without inhibitor. It shows that the km value increases in the presence of inhibitor and Vmax decreases. what type of inhibition is it? The inhibitor is an azide.
An enzyme catalyzed reaction was performed in the presence and in the absence of an inhibitor. The Lineweaver Burk plot showed competitive kinetics with x-intercepts of -10mm -1 and -3.5mm -1 in the presence and absence of the inhibitor respectively. If the inhibitor concentration used was 2micro molar (UM), calculate KI for the inhibitor enzyme binding? a. none of the above b. 0.135nM c. 0.054nM d. 0.225nM e. 1077 nM
11. In Excel, prepare Lineweaver-Burk plots for the behavior of an enzyme for which the following experimental data are available: V, umol/min umol/min (No Inhibitor) S], mM (Inhibitor Present) 3.66 5.12 6.18 6.98 7.60 4.58 6.40 7.72 8.72 9.50 3.0 5.0 7.0 9.0 11.0 a. What are the KM and Vmax values for the inhibited and uninhibited reaction 5 pts. each reaction) b. Is the inhibitor competitive or noncompetitive? (5 pts.) Micheli-Menten) EQUATIONS: VV
An enzyme catalyzed reaction was performed in the presence and in the absence of an inhibitor. The Lineweaver Burk plot showed non-competitive kinetics with y- intercepts of 15s -1 and 5 s -1 in the presence and absence of the inhibitor respectively. If the inhibitor binding constant was 0.5nM, calculate [I ] used in this reaction? a. 0.135nM b. none of the above c. 0.225nM d. InM e. 0.125nM
The following observations come from Lineweaver-Burke plots, based on kinetic data generated from a Michaelis/Menton-type enzyme (E) that catalyzes the hydrolysis of a peptide substrate (S). All data were generated in the presence of 18.0 μM total enzyme. The enzyme-catalyzed reaction has a Km of 3.00 μM and a Vmax of 2.00 μM/sec. The enzyme-catalyzed reaction in the presence of 15.0 μM of Inhibitor A has an apparent Km of 2.25 μM and an apparent Vmax of 1.50 μM/sec. The...