FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
CV Term Report
Help Close All Open All
General Information
Term mannosyltransferase activity ID (Ontology) GO:0000030 (Gene Ontology)
Definition Catalysis of the transfer of a mannosyl group to an acceptor molecule, typically another carbohydrate or a lipid.
Comment
Links to External Ontologies
  QuickGO data     AmiGO data
Annotations
Records annotated with this term OR any of its CHILD TERMS
    Results list data from multiple species. Click on a button above and use the 'Filter by species' options on the resulting HitList to retrieve species-specific data.
Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Genes (FBgn)  GO_MOLECULAR_FUNCTION      11
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Gene Groups Genes
 mannosyltransferase activity (all annotations which use CV term, excluding "NOT" statements)       2     11
     enables | mannosyltransferase activity       --      11
Spanning Tree (Parents/Children)
Only view relationship: 
  glycosyltransferase activity
   |__hexosyltransferase activity
       |__mannosyltransferase activity  28 rec.
           |__alpha-1,2-mannosyltransferase activity 4 rec.
           |   |__dol-P-Man:Man(2)GlcN-acyl-PI alpha-1,2-mannosyltransferase activity 1 rec.
           |   |__dol-P-Man:Man(3)GlcN-acyl-PI alpha-1,2-mannosyltransferase activity 1 rec.
           |   |__dol-P-Man:Man(6)GlcNAc(2)-PP-Dol alpha-1,2-mannosyltransferase activity 1 rec.
           |   |__dol-P-Man:Man(8)GlcNAc(2)-PP-Dol alpha-1,2-mannosyltransferase activity 1 rec.
           |   |__GDP-Man:Man(3)GlcNAc(2)-PP-Dol alpha-1,2-mannosyltransferase activity 1 rec.
           |   |__lipopolysaccharide N-acetylmannosaminouronosyltransferase activity
           |__alpha-1,3-mannosyltransferase activity 2 rec.
           |   |__dol-P-Man:Man(5)GlcNAc(2)-PP-Dol alpha-1,3-mannosyltransferase activity 1 rec.
           |   |__GDP-Man:Man(1)GlcNAc(2)-PP-Dol alpha-1,3-mannosyltransferase activity 1 rec.
           |__alpha-1,4-mannosyltransferase activity 2 rec.
           |   |__dol-P-Man:GlcN-acyl-PI alpha-1,4-mannosyltransferase activity 1 rec.
           |__alpha-1,6-mannosyltransferase activity 3 rec.
           |   |__dol-P-Man:Man(1)GlcN-acyl-PI alpha-1,6-mannosyltransferase activity 1 rec.
           |   |__dol-P-Man:Man(7)GlcNAc(2)-PP-Dol alpha-1,6-mannosyltransferase activity 1 rec.
           |   |__GDP-Man:Man(2)GlcNAc(2)-PP-Dol alpha-1,6-mannosyltransferase activity 1 rec.
           |   |__initiation-specific glycolipid 1,6-alpha-mannosyltransferase activity
           |__beta-1,4-mannosyltransferase activity 2 rec.
           |   |__chitobiosyldiphosphodolichol beta-mannosyltransferase activity 1 rec.
           |   |__glucomannan 4-beta-mannosyltransferase activity
           |   |__mannan synthase activity
           |__beta-mannosylphosphodecaprenol-mannooligosaccharide 6-mannosyltransferase activity
           |__dolichyl-phosphate beta-D-mannosyltransferase activity 2 rec.
           |__dolichyl-phosphate-mannose-protein mannosyltransferase activity 8 rec.
           |__GlcNAc(2)-PP-Dol mannosyltransferase activity 7 rec.
           |   |__chitobiosyldiphosphodolichol beta-mannosyltransferase activity 1 rec.
           |   |__dol-P-Man:Man(5)GlcNAc(2)-PP-Dol alpha-1,3-mannosyltransferase activity 1 rec.
           |   |__dol-P-Man:Man(6)GlcNAc(2)-PP-Dol alpha-1,2-mannosyltransferase activity 1 rec.
           |   |__dol-P-Man:Man(7)GlcNAc(2)-PP-Dol alpha-1,6-mannosyltransferase activity 1 rec.
           |   |__dol-P-Man:Man(8)GlcNAc(2)-PP-Dol alpha-1,2-mannosyltransferase activity 1 rec.
           |   |__GDP-Man:Man(1)GlcNAc(2)-PP-Dol alpha-1,3-mannosyltransferase activity 1 rec.
           |   |__GDP-Man:Man(2)GlcNAc(2)-PP-Dol alpha-1,6-mannosyltransferase activity 1 rec.
           |   |__GDP-Man:Man(3)GlcNAc(2)-PP-Dol alpha-1,2-mannosyltransferase activity 1 rec.
           |__GPI mannosyltransferase activity 5 rec.
           |   |__dol-P-Man:GlcN-acyl-PI alpha-1,4-mannosyltransferase activity 1 rec.
           |   |__dol-P-Man:Man(1)GlcN-acyl-PI alpha-1,6-mannosyltransferase activity 1 rec.
           |   |__dol-P-Man:Man(2)GlcN-acyl-PI alpha-1,2-mannosyltransferase activity 1 rec.
           |   |__dol-P-Man:Man(3)GlcN-acyl-PI alpha-1,2-mannosyltransferase activity 1 rec.
           |__heteroglycan alpha-mannosyltransferase activity
           |__inositol phosphorylceramide mannosyltransferase activity
           |__tRNA-queuosine(34) beta-mannosyltransferase activity 1 rec.
           |__undecaprenyl-phosphate mannosyltransferase activity
               |__all-trans-undecaprenyl-phosphate mannosyltransferase activity
               |__ditrans, polycis-undecaprenyl-phosphate mannosyltransferase activity
Spanning Tree View Settings
Parents/Children
View Depth
Show hierarchy levels: for parents, for children
hide Relationships
Is a hexosyltransferase activity
Part of
hide Synonyms & Secondary IDs
Synonyms
Secondary IDs
hide External Crossreferences & Linkouts
Reactome:R-HSA-162797 "mannose (a1-2) mannose (a1-6) (ethanolamineP) mannose (a1-4) glucosaminyl-acyl-PI -> mannose (a1) mannose (a1-2) mannose (a1-6) (ethanolamineP) mannose (a1-4) glucosaminyl-acyl-PI"
Reactome:R-HSA-162830 "glucosaminyl-acyl-PI + dolichol phosphate D-mannose -> mannose(al1-4)glucosaminyl-acyl-PI + dolichol phosphate"
Reactome:R-HSA-446198 "ALG12 transfers Man to N-glycan precursor (GlcNAc)2 (Man)7 (PP-Dol)1"
Reactome:R-HSA-4720497 "Defective ALG12 does not add mannose to the N-glycan precursor"