Which Statement Does NOT Describe a Characteristic of Phosphoprotein Phosphorylase-1

question 55

Multiple Choice

Which statement does NOT describe a characteristic of phosphoprotein phosphorylase-1 (PP1) ?

• A) PP1 can be phosphorylated by protein kinase A (PKA).
• B) PP1 can dephosphorylate glycogen phosphorylase, glycogen synthase, and phosphorylase kinase.
• C) PP1 is allosterically activated by glucose-6-phosphate.
• D) PP1 is inhibited by activated glycogen phosphorylase
• E) PP1 is phosphorylated by glycogen synthase kinase-3 (GSK3).

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