How do protein kinases generally activate their target proteins? A) The process

Question

How do protein kinases generally activate their target proteins?

A) The process of dephosphorylation causes the target to change conformations. B) The kinases bind to target proteins directly, forming a complex that activates the protein and lets them change conformations. C) Kinases bind to target proteins and inactivate them, so kinase levels must drop for target protein activation. D) The process of phosphorylation causes the target to change conformation. E) Kinases vary their concentrations through the cell cycle, so that proteins are activated only when kinase levels are high.

Explanation / Answer

D. The process of phosphorylation causes the target to change conformation.

The kinases itself activated by the cAMP regulation and then phosphorylate the target proteins by adding phosphates to them which activates them and results in target protein by changing enzyme activitya, etc.

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