Briefly describe 3 general catalytic mechanisms
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- Briefly describe 3 general catalytic mechanisms and 2 catalytic mechanisms of enzymesSuppose that the data below are obtained for an enzyme catalyzed reaction in the presence and absence of inhibitor Y. [S] (mM) V (mmol/mL*min) Without Y With Y 0.2 5.0 2.0 0.4 7.5 3.0 1.8 10.0 4.0 1.0 10.7 4.3 2.0 12.5 5.0 4.0 13.6 5.5 a.) Determine the type of inhibition that has occurred b.) Does inhibitor Y combine with E, with ES or with both? Explain c.) Calculate the inhibitor constant, Ki, for substance Y, assuming that the final concentration of Y in the reaction mixture was 0.3mMExamine the ActiveModel for alcohol dehydrogenase and describe the structure and function of the catalytic zinc center.
- Explain IN DETAIL the process of Kreb’s Cycle. Include the overall equation, location, products, by-products, and reactants.How can we verify the correctness of the catalytic triad's hypothesized mechanism?label all 5 identified regions in the active site, (labels like basic catalytic residue, acidic catalytic residue, catalytic nucleophile, etc.)
- Increased mechanistic knowledge of both chymotrypsin and subtilisin enzymes has emerged from comparing their active site geometries in the hope that their commonalities would have catalytic importance (which they did not). Are you able to discuss the efficacy of this strategy?Given the following information, calculate the catalytic efficiency of the enzyme. Step by step please [S] = 100 mM k1 = 10 sec-1 k2 = 3000 sec-1 k-1 = 20 sec-1 [E]T = 1 \muμMThe comparison of the active site geometries of chymotrypsin and subtilisin under the assumption that their similarities have catalytic signifi cance has led to greater mechanistic understanding of both these enzymes. Discuss the validity of this strategy.
- NH3 H-SCO A LES NH CH₂ NH CH₂ CH₂ 3 H-SCO A H3C SCO A 5. Describe the role of His in the catalytic mechanism shown.Graph B above depicts Lineweaver-Burk double reciprocal plot for an enzyme catalyzed reaction carried out in the presence or absence of an inhibitor. Which of the following statement best describes the kinetic data shown below: ? Line 1 depicts the enzyme-catalyzed reaction carried out in the presence of a competitive inhibitor. Line 1 depicts the enzyme-catalyzed reaction carried out in the presence of a noncompetitive inhibitor. Line 2 depicts the enzyme-catalyzed reaction carried out in the presence of a competitive inhibitor. Line 2 depicts the enzyme-catalyzed reaction carried out in the presence of a noncompetitive inhibitor.Mechanisms of catalysis : 2.1 Acid-base catalysis summary + example 2.2 Electrostatic catalysis summary + example 2.3 Covalent catalysis summary + example 2.4 Enzymen catalysis summary 2.5 Mechanism of chymotrypsin summary. These mechanisms involve several of the above-mentioned catalyses. In these summaries, do not just draw a diagram of the proposed mechanisms. It is more important to understand which reaction steps involve what kind of catalysis and how these help to reduce the activation energy needed for the reaction (e.g. a step in the reaction mechanism could be electrostatic catalysis to stabilise the transitions state) 2.6 Mechanism of lysozyme summary. These mechanisms involve several of the above-mentioned catalyses. In these summaries, do not just draw a diagram of the proposed mechanisms. It is more important to understand which reaction steps involve what kind of catalysis and how these help to reduce the activation energy needed for the reaction (e.g.…