Which of the following is (are) true regarding the activity of a protein regulated by phosphorylation?

Which of the following is (are) true regarding the activity of a protein regulated by phosphorylation?




A) It depends mostly on the concentration of inorganic phosphate inside the cell.
B) It depends on the balance in the cell between active kinase and active phosphatase molecules.
C) It is dependent on the site of attachment of the protein to the plasma membrane.
D) Only A and B are true.
E) A, B, and C are true.


Answer: B


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