The Role of Phosphorylation of Protein Tyr Residues During Signal

The role of phosphorylation of protein Tyr residues during signal transduction serves to

A) deplete a pool of protein?bound Ca²⁺.
B) direct certain receptors to the endoplasmic reticulum.
C) promote specific interactions between proteins.
D) regulate the conversion of normal proteins to oncoproteins.
E) stimulate the synthesis of cyclic-AMP.