How Do Protein Kinases Generally Activate Their Target Proteins

question 3

Multiple Choice

How do protein kinases generally activate their target proteins?

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

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