4. What signals lead to the breakdown/synthesis of glycogen? 5. When is phosphorylase active/inactive? When is...

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4. What signals lead to the breakdown/synthesis of glycogen?

5. When is phosphorylase active/inactive? When is glycogensynthase active/inactive? What role do phosphorylase kinase, PP1c,GSK-3, and the GL or GM proteins play in regulation of glycogensynthesis/breakdown?

6. What role does Ca2+ and AMP play in the breakdown of glycogenin the skeletal muscle?

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4 Signals like PKA begins the cascade of phosphorylation reaction that shuts down glycogen synthesis and activates glycogen breakdown Harmones like glucagon and epinephrine trigger the breakdown of glycogen 5During most physiological conditions phosphorylase b is active because of inhibitory effects of ATP and glucose6 phosphate Where as    See Answer
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