FB2026_02 , released June 18, 2026

CV Term Report

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General Information

Term

dol-P-Man:Man(3)GlcN-acyl-PI alpha-1,2-mannosyltransferase activity

ID (Ontology)

GO:0120565 (Gene Ontology)

Definition

Catalysis of the transfer of an alpha-D-mannosyl residue from dolichol-P-mannose to Man(3)-GlcN-acyl-PI, forming an alpha-(1->2)-D-mannosyl-D-mannose linkage. This transfers a fourth mannose to the GPI precursor, which is only present in some organisms/cell types.[ PubMed:15208306 ]

Also Known As

"glycosylphosphatidylinositol-mannosyltransferase IV activity" ; "GPI-MT-IV activity"

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_MOLECULAR_FUNCTION

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	Genes
dol-P-Man:Man(3)GlcN-acyl-PI alpha-1,2-mannosyltransferase activity (all annotations which use CV term, excluding "NOT" statements)
enables \| dol-P-Man:Man(3)GlcN-acyl-PI alpha-1,2-mannosyltransferase activity

Spanning Tree (Parents/Children)

mannosyltransferase activity
 |__alpha-1,2-mannosyltransferase activity__
 |__GPI mannosyltransferase activity________|
                                            dol-P-Man:Man(3)GlcN-acyl-PI alpha-1,2-mannosyltransferase activity  1 rec.

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	alpha-1,2-mannosyltransferase activity GPI mannosyltransferase activity
Part of
Synonyms & Secondary IDs
Synonyms
	"glycosylphosphatidylinositol-mannosyltransferase IV activity" EXACT "GPI-MT-IV activity" EXACT
Secondary IDs

External Crossreferences & Linkouts