Show pageOld revisionsBacklinksBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. **Why Muscle Glycogen can’t be Used directly for Energy Utilization for other cells?** **In Muscle - Muscles lack Glucose 6 Phosphatase** •Phosphoglucomutase catalyzes the isomerization of glucose-1-phosphate to glucose-6- phosphate. •Glucose-6-Phosphate gets directly utilized in Glycolysis **In Liver - Liver has Glucose 6 Phosphatase** * Phosphoglucomutase catalyzes the isomerization of glucose-1-phosphate to glucose-6-phosphate. * Glucose-6-phosphatase hydrolyzes glucose-6-phosphate to produce free glucose. * Free glucose released into the bloodstream for energy supply or maintaining blood glucose levels. * Muscle lacks Glucose 6 Phosphatase. * G-6-P produced by muscle glycogen can’t Cross its cell membrane. * Thus it will be used by muscle cell itself. * Therefore muscle glycogen can’t provide energy to other cells