12. The K,m for the reaction of chymotrypsin with N-acetylvaline ethyl ester is 8.8x10-2 M, and the K.," for the reaction of chymotrypsin with N-acetyltyrosine ethyl ester is 6.6x10 M. (a) Which substrate has the higher apparent affinity for the enzyme? (b) Which substrate is likely to give a higher value for Vmax? 13. An enzyme catalyzes the reaction A B. The enzyme is present at a concentration of 2 nNM and the Vmax is 1.2 μΜ s-1. The Km for substrate A is 10 μΜ. Calculate the initial velocity of the reaction, Vo, when the substrate concentration is (a) 2 μΜ, (b) 10 μM, (c) 30 μΜ. 14. An enzyme catalyzes the reaction M N. The enzyme is present at a concentration of 1 nM, and the Vmax is 2 μΜ s-1. The Km for substrate M is 4 μΜ. Calculate kcat.

12. The K,m for the reaction of chymotrypsin with N-acetylvaline ethyl ester is 8.8x10-2 M, and the K.," for the reaction of chymotrypsin with N-acetyltyrosine ethyl ester is 6.6x10 M. (a) Which substrate has the higher apparent affinity for the enzyme? (b) Which substrate is likely to give a higher value for Vmax? 13. An enzyme catalyzes the reaction A B. The enzyme is present at a concentration of 2 nNM and the Vmax is 1.2 μΜ s-1. The Km for substrate A is 10 μΜ. Calculate the initial velocity of the reaction, Vo, when the substrate concentration is (a) 2 μΜ, (b) 10 μM, (c) 30 μΜ. 14. An enzyme catalyzes the reaction M N. The enzyme is present at a concentration of 1 nM, and the Vmax is 2 μΜ s-1. The Km for substrate M is 4 μΜ. Calculate kcat.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Stereochemistry and Isomerism

Stereochemistry deals with the three-dimensional structure and properties of molecules. It explains the arrangement of atoms and their manipulation within a molecule in a 3D structure. Stereochemistry can be dealt with all types of molecules. Based on the stereochemistry of a molecule, the physical and chemical properties of the molecules vary.

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#13

12. The K,m for the reaction of chymotrypsin with N-acetylvaline ethyl ester is 8.8x10-2 M, and
the K.," for the reaction of chymotrypsin with N-acetyltyrosine ethyl ester is 6.6x10 M.
(a) Which substrate has the higher apparent affinity for the enzyme?
(b) Which substrate is likely to give a higher value for Vmax?
13. An enzyme catalyzes the reaction A B. The enzyme is present at a concentration of 2 nNM
and the Vmax is 1.2 μΜ s-1. The Km for substrate A is 10 μΜ. Calculate the initial velocity of the
reaction, Vo, when the substrate concentration is (a) 2 μΜ, (b) 10 μM, (c) 30 μΜ.
14. An enzyme catalyzes the reaction M N. The enzyme is present at a concentration of 1 nM,
and the Vmax is 2 μΜ s-1. The Km for substrate M is 4 μΜ. Calculate kcat.

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