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MS
rate-limiting unreviewed

Glycogen synthase

1 reactions · 1 pathways

Clinical / pharmacological. GSD 0: low glycogen, fasting ketotic hypoglycaemia

What it does, reaction by reaction

1 reactions

Glycogenesis (Glycogen Synthesis) Carbohydrate Metabolism · Cytosol (glycogen particle)

step 5 Irreversible/directional rate-limiting

UDP-glucose + glycogen(n) → glycogen(n+1) + UDP

Converts UDP-glucose Glycogen into Glycogen(n+1) UDP

› Notes

Glycogen synthase transfers glucose from UDP-glucose to a nonreducing end, forming an alpha(1→4) glycosidic bond. This is the principal rate-limiting and committed elongation step; it requires a pre-existing primer and is activated allosterically by glucose-6-phosphate.

Showing all 1 reactions.

What accelerates and inhibits it

Regulation is pathway-specific, so each context is listed separately

1 entries

Glycogenesis (Glycogen Synthesis)

Accelerated by

Glucose-6-phosphate; dephosphorylation

Inhibited by

Phosphorylation by protein kinase A, glycogen synthase kinase 3, and other kinases

Hormonal control

Insulin activates protein phosphatase 1 and inhibits glycogen synthase kinase 3, promoting dephosphorylation/activation; glucagon in liver and epinephrine inhibit through cAMP/protein kinase A

Recent literature

Europe PMC · fetched just now · sorted by publication date

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    Gu G, Zhu H, Li S, Zhang Z, Kao Y, Zhang R, Fu R, Han X, Yang Y, Liu H, Liu Q, Gao B, Feng S, Kong X. · 2026-09-22

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    You W, Gao F, Wang HL, Shen AZ, Zhang Z, Nie X, Huang WQ, Wang LH, You YZ. · 2026-09-11

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    Li N, Wei Y, Wu H, Yuan K, Li C, Hu J, Wu X, Zhang H, Chen X, Wan C. · 2026-08-02

    open access unreviewed

External claims. These come from an index outside this database and are not checked against it. Treat them as leads.