2. Using 3 umol of a novel enzyme in a set of kinetics experiments resulted in a kcat of 79 min and a KM of 87 µM. Draw relatively accurate Michaelis-Menten and Lineweaver-Burk plots (using kcat for the M-M plot and Vmax for the L-B plot) for the enzyme. Label the axes clearly and completely.
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Q: 1. Provided in the Table below kinetic data for an enzymatic reaction that was carried out in the…
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Q: 19. The picture below indicates a Lineweaver-Burk plot used to illustrate the values of KM and Vmax…
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- 1) what is the Vmax of the enzyme WITHOUT inhibitor 2) What is the Km of the enzyme WITHOUT the inhibitor 3) The specificity constant for enzyme X is (8*10^7) /(M*seconds); what is the kcat of the enzyme WITHOUT the inhibitor? 4) what was the concentration of the enzyme used for measuring the kinetics of enzyme X without inhibitor? 5) the dashed line represents enzyme with inhibitor. The concentration of the inhibitor is 5 micromolar. Calculate the equilibrium constant for the inhibitor Please show work and units3. How will I use my substrate R110 calibration curve in the trypsin enzyme lab? Can I use the substrate calibration curve to calculate the velocity of a reaction?1. Make a Lineweaver-Burk plot and use the plot to complete the information in the table and the following questions. a. Is it possible for the enzyme to overcome the effect of the inhibitor in question from the chart. Explain. b. What prevents this enzyme from being an even more catalytically efficient enzyme? c. What do single molecule data indicate about the validity of ensemble data?d. What is the reason that humans are insensitive to sulfa drugs?
- 1. The concentration of substrate X is high. What happens to the rate of the enzyme-catalyzed reaction if the concentration of substrate X is reduced? Explain. 2. An enzyme has an optimum pH of 7.2. What is most likely to happen to the activity of the enzyme if the pH drops to 6.2? Explain1 the concentration of the enzyme competition inhibitor was 1×10-3M. If 1 µmol of the inhibitor is present inthe 1 mL reaction mixture, Indicate how much the initial degree of hydrolysis decreases as a proportion(in thepresence of inhibitors/in the absence of inhibitors) with respect to the absence of inhibitors.a. What is the Vmax of this enzyme WITHOUT inhibitor? Please show your work. b. What is the Km of this enzyme WITHOUT inhibitor? Please show your work. c. The specificity constant of enzyme X is 8 x 10^7 /(M * seconds) What is the kcat of enzyme X WITHOUT inhibitor? Please show your work d. What was the concentration of enzyme used for measuring the kinetics of enzyme X WITHOUT inhibitor? Please show your work
- 5. For a Michaelis-Menten enzyme, k1 = 5.2 ⅹ 108 M-1 s-1, k-1 = 3.1 ⅹ 104 s-1, and k2 = 3.4 ⅹ 105 s-1. a) Write out the reaction, showing k1, k-1, and k2. Calculate Ks and Km. Does substrate binding approach equilibrium or the steady state? Justify your answer. b) What is kcat for this reaction? Justify your answer. c) Calculate Vmax for the enzyme. The total enzyme concentration is 25 pmol L-1, and each enzyme has two active sites. d) What substrate concentration would be required for the reaction in (c) to reach half of Vmax. Justify your answer mathematically. e) A second Michaelis-Menten enzyme has k1 = 4.2 ⅹ 107 M-1 s-1, k-1 = 6.1 ⅹ 104 s-1, and k2 = 5.3 ⅹ 102 s-1. Which enzyme is most efficient? 6. A pharmaceutical company is trying to develop a1. Can you describe how electrostatic and steric considerations may lead to preferential stabilization of the transition state at an enzyme active site? 2. What factors are involved in “transition-state complementarity”?1. Calculate the reaction Kcat for the Control in experiment (1). 2. Draw a velocity versus [S] showing Michaelis-Menten curve for the Control. Clearly show Vmax and KM for the enzyme.
- An enzyme is found that catalyzes the reaction X ⇌ Y. Researchers find that the Km for the substrate X is 4 μM, and the kcat is 20 min−1.(a) In an experiment, [X] = 6 mM, and V0 = 480 nM min−1. What was the [Et] used in the experiment?(b) In another experiment, [Et] = 0.5 μM, and the measured V0 = 5 μM min−1. What was the [X] used in the experiment?(c) The compound Z is found to be a very strong competitive inhibitor of the enzyme, with an α of 10. In an experiment with the same [Et] as in (a), but a different [X], an amount of Z is added that reduces V0 to 240 nM min−1. What is the [X] in this experiment?(d) Based on the kinetic parameters given above, has this enzyme evolved to achieve catalytic perfection? Explain your answer briefly, using the kinetic parameter(s) that define catalytic perfection.You run a series of assays at 25°C on enzyme A. You measure the velocity for a range of S concentrations. What is the Km (in mM) for Enzyme A?1. A. Estimate from the graph what the Vmax is for the enzyme without inhibitor present (black circles) and in the presence of the inhibitor (green squares). B. Estimate the Km from the graph without inhibitor present (black circles) and in the presence of the inhibitor (green squares). C. Based on the data, what type of reversible inhibitor do you think was used? Explain your answer.