Enzyme activated by covalent phosphorylation is
Glycogen phosphorylase removes glucose as glucose-1-phosphate from glycogen(phosphorolysis). It contains pyridoxal phosphate as a prosthetic group.Ref: DM Vasudevan, 7th edition, page no: 124
Glycogen phosphorylase
Acetyl CoA carboxylase
HMG CoA reductase
Pyruvate carboxylase
Metabolism of carbohydrate