Which of These Covalently Modifies Proteins by Phosphorylation

question 65

Multiple Choice

Which of these covalently modifies proteins by phosphorylation?

• A) enzymes called protein phosphatases
• B) other proteins called allosteric proteins
• C) any ligand that can bind to specific binding sites
• D) enzymes called protein kinases
• E) metal ions, such as Fe2+

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