an enzyme-catalyzed reaction is studied in the presence and absence of an inhibitor. The following data was obtained.  (S)[M] V (umol/min) V (+inhibitor)(umol/min) 6 x 10-6 20.8 12 1 x 10-5 29 15 2 x 10-5 45 20 6 x 10-5 67.6 24 1.8 x 10-4 87 28 plot 1/[S] as abscissa and 1/V as ordinate for both catalyzed reaction and reaction with inhibitor. Use the same graph for both plots. calculate the  Km of enzyme in the reaction without inhibitor Km1 of the enzyme in the reaction with inhibitor Vmax of the uninhibited reaction  Vmax of the inhibited reaction   what kind of inhibitor was added to the enzyme-catalyzed reaction? explain your answer in terms of changes in Km and Vmax.

Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
icon
Related questions
Question

2. an enzyme-catalyzed reaction is studied in the presence and absence of an inhibitor. The following data was obtained. 

(S)[M] V (umol/min) V (+inhibitor)(umol/min)
6 x 10-6 20.8 12
1 x 10-5 29 15
2 x 10-5 45 20
6 x 10-5 67.6 24
1.8 x 10-4 87 28
  • plot 1/[S] as abscissa and 1/V as ordinate for both catalyzed reaction and reaction with inhibitor. Use the same graph for both plots.

calculate the 

  • Km of enzyme in the reaction without inhibitor
  • Kmof the enzyme in the reaction with inhibitor
  • Vmax of the uninhibited reaction 
  • Vmax of the inhibited reaction

 

  • what kind of inhibitor was added to the enzyme-catalyzed reaction? explain your answer in terms of changes in Km and Vmax. 
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps with 1 images

Blurred answer
Similar questions
Recommended textbooks for you
Biochemistry
Biochemistry
Biochemistry
ISBN:
9781319114671
Author:
Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:
W. H. Freeman
Lehninger Principles of Biochemistry
Lehninger Principles of Biochemistry
Biochemistry
ISBN:
9781464126116
Author:
David L. Nelson, Michael M. Cox
Publisher:
W. H. Freeman
Fundamentals of Biochemistry: Life at the Molecul…
Fundamentals of Biochemistry: Life at the Molecul…
Biochemistry
ISBN:
9781118918401
Author:
Donald Voet, Judith G. Voet, Charlotte W. Pratt
Publisher:
WILEY
Biochemistry
Biochemistry
Biochemistry
ISBN:
9781305961135
Author:
Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher:
Cengage Learning
Biochemistry
Biochemistry
Biochemistry
ISBN:
9781305577206
Author:
Reginald H. Garrett, Charles M. Grisham
Publisher:
Cengage Learning
Fundamentals of General, Organic, and Biological …
Fundamentals of General, Organic, and Biological …
Biochemistry
ISBN:
9780134015187
Author:
John E. McMurry, David S. Ballantine, Carl A. Hoeger, Virginia E. Peterson
Publisher:
PEARSON