Phosphofructokinase is an allosteric enzyme that catalyzes the conversion of fructose 6-phosphate to fructose 1,6-bisphosphate, an early step of glycolysis. In the presence of oxygen, an increase in the amount of ATP in a cell would be expected to
A) inhibit the enzyme and thus slow the rates of glycolysis and the citric acid cycle.
B) activate the enzyme and thus slow the rates of glycolysis and the citric acid cycle.
C) inhibit the enzyme and thus increase the rates of glycolysis and the citric acid cycle.
D) activate the enzyme and increase the rates of glycolysis and the citric acid cycle.
E) inhibit the enzyme and thus increase the rate of glycolysis and the concentration of citrate.
Reaction coordinate diagram comparing enzyme-catalyzed and uncatalyzed reactions
Common mechanisms for enzyme-catalyzed bisubstrate reactions
This graphic illustrates the original systems model of politics advanced by David Easton. Politics
Reaction coordinate diagram for a simple enzyme catalyzed reaction
Effect of cooperative substrate binding on enzyme kinetics
Close-up of a newly created enzyme degrading PET plastic