Some glucose produced by gluconeogenesis is stored in the body as glycogen. Order the steps of glycogen synthesis. Not all description accurately describe glycogen synthesis; therefore, not all the descriptions will be used. Pyrophosphates converts PPi and water into Pi. Glycogen synthase adds a glucose unit from UDP-glucose to glycogen, producing a a larger glycogen molecule and UDP. Glycogen synthase removes a glucose unit from a glycogen molecule producing a smaller glycogen molecule and UDP. ADP-glucose pyrophosphorylase catalyzes the reaction of glucose-1-phoshate and ATP to ADP-glucose and PPi. UDP-glucose-1-phosphate and and UTP to UDP-glucose and PPi.