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+

Question

Quizplus · Accepted Answer

Protein kinases are enzymes that add a phosphate group to specific amino acids on proteins, which is called phosphorylation. This covalent modification can alter the activity or function of the protein.

Which of These Covalently Modifies Proteins by Phosphorylation