NADPH inhibits glucose-6-phosphate dehydrogenase. What kind of inhibitor is NADPH?
NADPH inhibits glucose-6-phosphate dehydrogenase. What kind of inhibitor is NADPH?
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
Related questions
Question

Transcribed Image Text:7. Glucose-6-phosphate dehydrogenase catalyzes the reaction shown below. Kinetic data
for the enzyme isolated from the thermophilic bacterium T. maritima are presented in the
following table.
CH₂OPO
H
но
CH₂OPO
OH H
H
OH
Н
OH
Glucose-6-phosphate
Substrate
NADP+
NAD+
NADP+
Glucose-6-phosphate
NADPH + H+
glucose-6-
phosphate
dehydrogenase
H
12.0
НО
H
OH H
Η
OH
6-Phosphoglucono-8-lactone
KM (mM) Vmax (Umg-¹)
0.15 20
0.03
20
6
a. NADPH inhibits glucose-6-phosphate dehydrogenase. What kind of inhibitor is
NADPH?
b. How are the values of KM and Vmax likely to differ from those listed in the table if
NADPH is present?
c. Does glucose-6-phosphate dehydrogenase prefer NAD+ or NADP+ as a
cofactor?
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 5 steps

Recommended textbooks for you

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
Biochemistry
ISBN:
9781464126116
Author:
David L. Nelson, Michael M. Cox
Publisher:
W. H. Freeman

Fundamentals of Biochemistry: Life at the Molecul…
Biochemistry
ISBN:
9781118918401
Author:
Donald Voet, Judith G. Voet, Charlotte W. Pratt
Publisher:
WILEY

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
Biochemistry
ISBN:
9781464126116
Author:
David L. Nelson, Michael M. Cox
Publisher:
W. H. Freeman

Fundamentals of Biochemistry: Life at the Molecul…
Biochemistry
ISBN:
9781118918401
Author:
Donald Voet, Judith G. Voet, Charlotte W. Pratt
Publisher:
WILEY

Biochemistry
Biochemistry
ISBN:
9781305961135
Author:
Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher:
Cengage Learning

Biochemistry
Biochemistry
ISBN:
9781305577206
Author:
Reginald H. Garrett, Charles M. Grisham
Publisher:
Cengage Learning

Fundamentals of General, Organic, and Biological …
Biochemistry
ISBN:
9780134015187
Author:
John E. McMurry, David S. Ballantine, Carl A. Hoeger, Virginia E. Peterson
Publisher:
PEARSON