Glycogenolysis is a process in which a glycogen molecule breaks down into individual molecule of Glucose. This process takes place in Liver and Muscles. Glycogenolysis breaks down glycogen into glucose-1-phosphate. It happens in the cytoplasm of liver, muscle, and adipose cells. Glycogenolysis detailed notes with steps and regulation is provided below. In the previous section, you learned that glucagon signaling down-regulates glycogen synthesis. Now, let's look at glycogen breakdown, called glycogenolysis , and its control by two hormones, glucagon and epinephrine. Only two enzymes are required for the breakdown of glycogen: the glycogen phosphorylase enzyme and the glycogen debranching enzyme. Glycogenolysis is the breakdown of the molecule glycogen into glucose, a simple sugar that the body uses to produce energy. Glycogen is essentially stored energy in the form of a long chain of glucose, and glycogenolysis takes place in muscle and liver cells when more energy needs to be produced.
