F08-homework_3 - Homework 3 BCH 361 Fall 2008 Name of the...

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Homework 3 BCH 361 Fall 2008 Name of the student: student ID: (1) What is the function of the following classes of proteins, give one example for each of the protein classes: receptor: redox proteins: transporters: (2) Name the major structural protein that builds up the following materials. Indicate also if the protein consist of alpha helices or beta sheets. shell of turtle: silk: nails: sinews: (3) Which are the main proteins involved in muscle contraction ? (4) Which disease is caused by a single point mutation in hemoglobin? (5) Does myoglobin has a higher or lower affinity for oxygen? (6)What is the function of an enzyme? (7) Does a catalysts change: - the velocity yes / no - the equilibrium constant yes / no - the enthalpy yes / no - the Free Energy of a chemical reaction: yes / no 1
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(8) Draw the reaction profile (G plotted against the reaction coordinate) for an enzyme catalyzed reaction. (9) Does an enzyme stabilize the substrate, product or the transition state?
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