And one important minor difference between liver phosphorylase and muscle phosphorase is that liver phosphorylase is actually sensitive to glucose molecules. Glucose is an allosteric effector. More specifically, it's an allosteric inhibitor of phosphorase. So let's take a look at the following diagram. So, this diagram describes the fully active r state of phosphorace A found in the liver, and the T state, inactive state. Office Fourlase A of the liver.