You have discovered a new enzyme that has a nearly identical active site to chymotrypsin. This new enzyme uses the same catalytic triad and the same reaction mechanism as chymotrypsin. Your new enzyme differs from chymotrypsin because it cuts peptides at the C terminus of polar, non-
You have discovered a new enzyme that has a nearly identical active site to chymotrypsin. This new enzyme uses the same catalytic triad and the same reaction mechanism as chymotrypsin. Your new enzyme differs from chymotrypsin because it cuts peptides at the C terminus of polar, non-
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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![You have discovered a new enzyme that has a nearly identical active site to
chymotrypsin. This new enzyme uses the same catalytic triad and the same
reaction mechanism as chymotrypsin. Your new enzyme differs from
chymotrypsin because it cuts peptides at the C terminus of polar, non-
ionizable R groups.
A) Beginning with the first tetrahedral intermediate, draw the mechanism of
catalysis that occurs to cleave the tripeptide Asn- Phe- Lys substrate ending
your answer with the product and free enzyme.
B) From the list below, which of the components would most likely be found
in the area of the enzyme that substitutes the hydrophobic pocket of
chymotrypsin? Very briefly explain your choice(s):
Ser ile
Zn+ Val
C) You've constructed a molecule that is able to bind to the 1st tetrahedral
intermediate of your new enzyme, preventing catalysis. From experimental
results, you can see that this molecule is only able to bind to the tetrahedral
intermediate. Assuming that this enzyme follows Michaelis- Mentne Kinetics,
draw a well labelled graph that shows the effects of this molecule on your
new enzyme. How would you correctly classify this molecule?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F14e4b923-414d-46f3-88d3-3bdca0b87157%2Fd6dde7c0-9e59-464c-8b56-282fb01b34a1%2Fpor8042_processed.jpeg&w=3840&q=75)
Transcribed Image Text:You have discovered a new enzyme that has a nearly identical active site to
chymotrypsin. This new enzyme uses the same catalytic triad and the same
reaction mechanism as chymotrypsin. Your new enzyme differs from
chymotrypsin because it cuts peptides at the C terminus of polar, non-
ionizable R groups.
A) Beginning with the first tetrahedral intermediate, draw the mechanism of
catalysis that occurs to cleave the tripeptide Asn- Phe- Lys substrate ending
your answer with the product and free enzyme.
B) From the list below, which of the components would most likely be found
in the area of the enzyme that substitutes the hydrophobic pocket of
chymotrypsin? Very briefly explain your choice(s):
Ser ile
Zn+ Val
C) You've constructed a molecule that is able to bind to the 1st tetrahedral
intermediate of your new enzyme, preventing catalysis. From experimental
results, you can see that this molecule is only able to bind to the tetrahedral
intermediate. Assuming that this enzyme follows Michaelis- Mentne Kinetics,
draw a well labelled graph that shows the effects of this molecule on your
new enzyme. How would you correctly classify this molecule?
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