Among Enzymes, Kinases Catalyze Phosphorylation, While Phosphatases Catalyze Removal of Phosphate(s)

question 75

Multiple Choice

Among enzymes, kinases catalyze phosphorylation, while phosphatases catalyze removal of phosphate(s) . A cell's use of these enzymes can therefore function as an on-off switch for various processes. Which of the following is probably involved?

• A)the change in a protein's charge leading to a conformational change
• B)the change in a protein's charge leading to cleavage
• C)a change in the optimal pH at which a reaction will occur
• D)a change in the optimal temperature at which a reaction will occur
• E)the excision of one or more peptides

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