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Proteins/UNIPROT:Q9P109
Glycosyltransferase that mediates core 2 O-glycan branching, an important step in mucin-type biosynthesis. Does not have core 4 O-glycan or I-branching enzyme activity..
Function from UniProtKB (Q9P109), read 2026-09-23. CC BY 4.0.
Curated compounds routed: 0
13 statements
13 statements · 4 reference databases · Subject: GCNT4 · Sources: Hetionet, Human-GEM, Reactome, Rhea
4 reactions
MAM03000g+CHEBI:16264MAM01871g+proton+UDP
Catalysed by GCNT3 or GCNT4 or GCNT1
Reaction pageLeft to rightBalance undeterminableEC 2.4.1.102Golgi apparatus
Human-GEM MAR07180CC BY 4.0Reference data
MAM02960g+CHEBI:16264MAM01607g+proton+UDP
Catalysed by GCNT3
3 names
Resolves to: GCNT4
Reaction pageLeft to rightBalance undeterminableEC 2.4.1.102Golgi apparatus
Human-GEM MAR07440CC BY 4.0Reference data
a 3-O-[beta-D-galactosyl-(1->3)-N-acetyl-alpha-D-galactosaminyl]-L-seryl-[protein]+UDP-N-acetyl-alpha-D-glucosamine3-O-{beta-D-galactosyl-(1->3)-[N-acetyl-beta-D-glucosaminyl-(1->6)]-N-acetyl-alpha-D-galactosaminyl}-L-seryl-[protein]+UDP+hydron
Catalysed by GCNT3 or GCNT1 or GCNT4
Reaction pageLeft to rightBalance undeterminable
Rhea RHEA:56212CC BY 4.0Reference data
a 3-O-[beta-D-galactosyl-(1->3)-N-acetyl-alpha-D-galactosaminyl]-L-threonyl-[protein]+UDP-N-acetyl-alpha-D-glucosaminea 3-O-{beta-D-galactosyl-(1->3)-[N-acetyl-beta-D-glucosaminyl-(1->6)]-N-acetyl-alpha-D-galactosaminyl}-L-threonyl-[protein]+UDP+hydron
Catalysed by GCNT3 or GCNT1 or GCNT4
Reaction pageLeft to rightBalance undeterminable
Rhea RHEA:56216CC BY 4.0Reference data