Regulation of Carbohydrate Metabolism Problem Set

Question 8: Insulin action in skeletal muscle

Tutorial to help answer the question

Insulin regulates all of the following enzymes in liver. Which of these enzymes are also regulated by insulin in muscle?

  1. Glycogen synthase

  2. Glycogen phosphorylase

  3. Phosphofructokinase-1 (PFK-1)

  4. Phosphofructokinase-2 (PFK-2)

  5. Glucokinase


This is essentially the same figure as for insulin action in liver (question 1 of this module), and the five enzymes in question are denoted with question marks. The key for arriving at the correct answer is to determine which enzymes are missing in muscle.

Graphic of Insulin Action in Muscle

Problem 8 | Answer


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March 16, 2001
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