14. Calculate v, and the degree of inhibition caused by a competitive inhibitor under the following conditions: (a) [S] = 2 x 10-3 M and [I] = 2 x 103 M (b) [S] = 4 x 104 M and [I] = 2 x 10-3 M (c) [S] = 7.5 x 10-3 M and [I]= 10-$ M Assume that Km = 2 x 10-3 M, K; = 1.5 x 104 M and Vmax = 270 nmoles x liter x min-. The degree of inhibition is the percent of the uninhibited velocity reached in the presence of the inhibitor. %3D

Biochemistry
9th Edition
ISBN:9781305961135
Author:Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher:Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Chapter15: The Importance Of Energy Changes And Electron Transfer In Metabolism
Section: Chapter Questions
Problem 12RE: MATHEMATICAL Consider the reaction AB+C, where G=0.00. (a) What is the value of G (not G) when the...
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Problems 14 and 15: some of the exponents are unclear. Here they are:
14. Calculate V; and the degree of inhibition caused by a competitive inhibitor
under the following conditions:
(a) [S]=2 x 103 M and [I] = 2 x 10-3 M
(b) [S] = 4 x 104 M and [I] = 2 x 10-3 M
(c) [S]= 7.5 x 10-3 M and [I] = 10-$ M
Assume that Km= 2 x 10-3 M, K; = 1.5 x 104 M
and Vmax = 270 nmoles x liter x min-.
The degree of inhibition is the percent of the uninhibited velocity
reached in the presence of the inhibitor.
%3D
15. (a) What concentration of competitive inhibitor is required to
yield 75% inhibition at a substrate concentration of 1.5 x 10-3 M if
Km = 2.9 x 104 M and K; = 2 x 10-5 M? (b) To what concentration
must the substrate be increased to reestablish the velocity at the
original uninhibited value?
Transcribed Image Text:Problems 14 and 15: some of the exponents are unclear. Here they are: 14. Calculate V; and the degree of inhibition caused by a competitive inhibitor under the following conditions: (a) [S]=2 x 103 M and [I] = 2 x 10-3 M (b) [S] = 4 x 104 M and [I] = 2 x 10-3 M (c) [S]= 7.5 x 10-3 M and [I] = 10-$ M Assume that Km= 2 x 10-3 M, K; = 1.5 x 104 M and Vmax = 270 nmoles x liter x min-. The degree of inhibition is the percent of the uninhibited velocity reached in the presence of the inhibitor. %3D 15. (a) What concentration of competitive inhibitor is required to yield 75% inhibition at a substrate concentration of 1.5 x 10-3 M if Km = 2.9 x 104 M and K; = 2 x 10-5 M? (b) To what concentration must the substrate be increased to reestablish the velocity at the original uninhibited value?
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