FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term protein O-linked glycosylation via N-acetylgalactosamine ID (Ontology) GO:0016266 (Gene Ontology)
Definition A glycoprotein biosynthetic process starting with the covalent linkage of an N-acetyl-galactosamine via an alpha-glycosidic bond to the oxygen atom of a serine or threonine side chain in a protein, which can be further elongated with the sequential addition of sugar units resulting in the formation of a protein O-linked glycan.[ PubMed:10580130 PubMed:35536936 ]
Also Known As"core O-glycan biosynthetic process" ; "O-glycan processing" ; "protein O-linked glycosylation via N-acetyl-galactosamine"
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Data ClassFieldDirect annotations
Genes (FBgn)GO_BIOLOGICAL_PROCESS
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 protein O-linked glycosylation via N-acetylgalactosamine (all annotations which use CV term, excluding "NOT" statements)
     involved_in | protein O-linked glycosylation via N-acetylgalactosamine       --
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  glycoprotein biosynthetic process
   |__protein O-linked glycosylation
       |__protein O-linked glycosylation via N-acetylgalactosamine  21 rec.
           |__keratan sulfate-II proteoglycan biosynthetic process
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Is a protein O-linked glycosylation
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Synonyms
  • "core O-glycan biosynthetic process" EXACT
    "mucin-type O-glycan synthesis" NARROW
    "O-glycan processing" EXACT
    "protein O-linked GalNAcylation" RELATED
    "protein O-linked glycosylation via N-acetyl-galactosamine" EXACT
Secondary IDs
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MetaCyc:PWY-7433
MetaCyc:PWY-7435
Reactome:R-HSA-913709 "O-linked glycosylation of mucins"