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MS
unreviewed

Glycogenin (autoglucosylation)

1 reactions · 1 pathways

Cofactors used

What it does, reaction by reaction

1 reactions

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

step 4 Irreversible/directional

UDP-glucose + glycogenin–Tyr-OH → glycogenin–Tyr-O-glucose + UDP; repeated additions form a short alpha(1→4)-glucosyl primer

Converts UDP-glucose Glycogenin-Tyr-OH into Glycogenin-Tyr-O-glucose UDP Repeated additions form a short alpha(1→4)-glucosyl primer

Notes

Glycogenin is an autoglycosylating protein that uses UDP-glucose and divalent cation (typically Mg2+). It creates the required primer, usually about 8 residues long, because glycogen synthase cannot initiate a new chain de novo.

Showing all 1 reactions.

What accelerates and inhibits it

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

1 entries

Glycogenesis (Glycogen Synthesis)

Listed there as: Glycogenin

Accelerated by

Availability of UDP-glucose

Inhibited by

Lack of primer function

Hormonal control

No major acute independent hormonal regulation

Recent literature

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