Biochemistry Which of these is not a cofactor for glycogen phosphorylase, an impoant enzyme of the glycogenolysis pathway? A Calmodulin B c-AMP C Protein Kinase A D Glycogenin 💡 Explanation Which of these is not a cofactor for glycogen phosphorylase, an impoant enzyme of the glycogenolysis pathway? ✓ Correct Answer: D. Glycogenin