Glucose 1-phosphate

 Glucode 1-Phosphate is the product of the breakdown of glycogen. A phosphorylase needs to be activated to cause an addition of orthophosphate (Pi) across the glycosidic bond to produce two products: glucose 1-phosphate and glycogen (n-1 residue). The glucose 1-phosphate can go into the glycolysis pathway to be converted into glucose 6-phosphate and eventually produce energy.