glycogen synthase catalyzes glycogen synthesis. determine whether each of the following are associated with an increase or decrease in glycogen synthase activity.
Increased glycogen synthase activity:
Decreased glycogen synthase activity:
1) activation of phosphoprotein phosphatase PP1
2) Phosphorylation (inactivation) of phosphoprotein phosphatase 1 (PP1) by PKA
3) Subunit dissociation of cAMP-dependent protein kinase (PKA)
4) Phosphorylation of glycogen synthase
5) Insulin
6) Phosphorylation of glycogen synthase kinase (GSK, or GSK3)