We have the phosphorylase A in the r state that is bound to this protein phosphatase One. And because of that association, this molecule is not active. Now, phosphorylase A in the art state acts as a glucose sensor. And when the glucose levels in the cytoplasm of that liver increase, they begin to bind the glucose. And the glucose acts as an allosteric inhibitor. It basically transforms the active r state into the inactive T state, and that leads to the dissociation of these two molecules.