FB2026_03 , released September 17, 2026

CV Term Report

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General Information

Term

protein O-linked glycosylation via galactose

ID (Ontology)

GO:0180062 (Gene Ontology)

Definition

A glycoprotein biosynthetic process starting with the covalent linkage of galactose via a beta-glycosidic bond to the oxygen atom of the hydroxyl group of a hydroxyproline, a hydroxylysine, a serine or a threonine 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. Hydroxylysine modification occurs in the endoplasmic reticulum and is predominantly found in collagen. Hydroxyproline modification occurs in the Golgi and is found only in plant proteins.[ PubMed:17516569 PubMed:30822656 PubMed:33815452 ]

Comment

Links to External Ontologies

QuickGO data AmiGO data

Annotations

Records annotated with this term OR any of its CHILD TERMS

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Direct annotations: records annotated with this exact term (child terms are NOT included)

Data Class	Field	Direct annotations
Genes (FBgn)	GO_BIOLOGICAL_PROCESS

Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records

Full annotation statements	Relevant FlyBase reports
Full annotation statements	Gene Groups	Genes
protein O-linked glycosylation via galactose (all annotations which use CV term, excluding "NOT" statements)
involved_in \| protein O-linked glycosylation via galactose	--

Spanning Tree (Parents/Children)

  glycoprotein biosynthetic process
   |__protein O-linked glycosylation
       |__protein O-linked glycosylation via galactose  3 rec.

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	protein O-linked glycosylation
Part of
Synonyms & Secondary IDs
Synonyms
	"protein O-linked galactosylation" RELATED
Secondary IDs

External Crossreferences & Linkouts