How might a change of one amino acid at a site, distant from the active site of an enzyme, alter an enzyme's substrate specificity? a) by changing the enzyme's location in the cell b) by changing the shape of an enzyme c) An amino acid change away from the active site cannot alter the enzyme's substrate specificity. d) by changing the enzyme's binding of allosteric regulator e) by changing the enzyme's pH optimum

Introduction to General, Organic and Biochemistry
11th Edition
ISBN:9781285869759
Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Chapter23: Enzymes
Section: Chapter Questions
Problem 23.25P: 5 Which of the following is a correct statement describing the induced-fit model of enzyme action?...
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How might a change of one amino acid at a site, distant from the active site of an
enzyme, alter an enzyme's substrate specificity?
a) by changing the enzyme's location in the cell
b) by changing the shape of an enzyme
c) An amino acid change away from the active site cannot alter the enzyme's
substrate specificity.
d) by changing the enzyme's binding of allosteric regulator
e) by changing the enzyme's pH optimum
Transcribed Image Text:How might a change of one amino acid at a site, distant from the active site of an enzyme, alter an enzyme's substrate specificity? a) by changing the enzyme's location in the cell b) by changing the shape of an enzyme c) An amino acid change away from the active site cannot alter the enzyme's substrate specificity. d) by changing the enzyme's binding of allosteric regulator e) by changing the enzyme's pH optimum
3. An enzyme has a total of four active sites. When you denature the molecule
and study its composition, you find that each active site occurs on a different
polypeptide. Which of the following hypotheses does this observation
support?
a) The enzyme requires a co-factor to function normally.
b) The protein has quaternary structure.
c) The enzyme is subject to allosteric regulation.
d) The protein's structure is affected by temperature and pH.
Transcribed Image Text:3. An enzyme has a total of four active sites. When you denature the molecule and study its composition, you find that each active site occurs on a different polypeptide. Which of the following hypotheses does this observation support? a) The enzyme requires a co-factor to function normally. b) The protein has quaternary structure. c) The enzyme is subject to allosteric regulation. d) The protein's structure is affected by temperature and pH.
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