Phosphorylation can be used to either inactive or activate enzymes. This is a key element in the regulation of glucose metabolism. Phosphorylation of glycogen phosphorylase it; phosphorylation of glycogen synthase it.

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Phosphorylation activates glycogen phosphorylase, which breaks down glycogen, and inactivates glycogen synthase, which synthesizes glycogen. This regulation is crucial for controlling glucose levels in the body.

Phosphorylation Can Be Used to Either Inactive or Activate Enzymes