Remember when we have Glucagon:
Glycogen synthase is phosphorylated and inhibited.
Phosphorylase kinase is phosphorylated and activated.
Glycogen phosphorylase is phosphorylated and activated.
We have the exact reverse here:
Phosphate group from glycogen synthase, phosphorylase kinase and glycogen phosphorylase are removed. Glycogen synthase is activated, phosphorylase kinase and glycogen phosphorylase is inhibited.
Glucagon signalling in a liver cell leads to inactivation of PP1, which triggers glycogen synthesis.
Insulin is signalling and PP1 is bound to its G sub-unit.
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