Cytosol (liver and muscle)
Glycogenesis
The fed state banks glucose as branched glycogen.
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Net yieldCosts 1 UTP (≈1 ATP) per glucose stored from G6P
Rate-limitingGlycogen synthase
Steps4
Irreversible3
The reciprocal switch
A single PKA signal switches synthase OFF and phosphorylase ON, so the two never run at once