Experimental Factor Ontology (EFO)
OWL
Last submission date January 6, 2026
ID http://purl.obolibrary.org/obo/GO_0006493
http://purl.obolibrary.org/obo/GO_0006493
https://stageportal.lirmm.fr/ontologies/EFO/GO_0006493
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Preferred name

protein O-linked glycosylation

Synonyms
protein amino acid O-linked glycosylation
Definitions
A glycoprotein biosynthetic process starting with the covalent linkage of carbohydrate or carbohydrate derivative unit via a glycosidic bond to the oxygen atom of a serine, threonine, hydroxylysine, hydroxyproline or tyrosine 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.
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