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. [PMID:10580130, PMID:35536936]
Full description or abstract
Collection
M5: Ontology GO: Gene Ontology GO:BP: GO Biological Process
2026.1.Mm: Renamed from GOBP_O_GLYCAN_PROCESSING. Updated to GO Release 2025-10-10.
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