Why Is Phosphorylation-Dephosphorylation Commonly Used to Regulate Signal Transduction Pathways

question 16

Multiple Choice

Why is phosphorylation-dephosphorylation commonly used to regulate signal transduction pathways?

• A)Phosphate groups are efficient second messengers.
• B)Protein kinases and phosphatases are abundant in most cells.
• C)The hydrolysis of bound GTP results in GDP and P_i.
• D)The addition or removal of a phosphate group can expose or hide potential binding sites in proteins.

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