FB2026_03 , released September 17, 2026
CV Term Report
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Term galactosyltransferase activity ID (Ontology) GO:0008378 (Gene Ontology)
Definition Catalysis of the transfer of a galactosyl group to an acceptor molecule, typically another carbohydrate or a lipid.[ ISBN:0198506732 ]
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Genes (FBgn)GO_MOLECULAR_FUNCTION
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 galactosyltransferase activity (all annotations which use CV term, excluding "NOT" statements)
     enables | galactosyltransferase activity       --
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  glycosyltransferase activity
   |__hexosyltransferase activity
       |__galactosyltransferase activity  33 rec.
           |__alpha-1,2-galactosyltransferase activity
           |__alpha-1,3-galactosyltransferase activity
           |__beta-1,3-galactosyltransferase activity 20 rec.
           |   |__lactosylceramide beta-1,3-galactosyltransferase activity
           |   |__N-acetyl-beta-D-glucosaminide beta-(1,3)-galactosyltransferase activity 8 rec.
           |   |__N-acetylgalactosaminide beta-1,3-galactosyltransferase activity 12 rec.
           |__galactinol-raffinose galactosyltransferase activity
           |__galactinol-sucrose galactosyltransferase activity
           |__galactolipid galactosyltransferase activity
           |__hydroxyproline O-galactosyltransferase activity
           |__raffinose-raffinose alpha-galactotransferase activity
           |__UDP-galactosyltransferase activity 30 rec.
               |__1,2-diacylglycerol 3-beta-galactosyltransferase activity
               |__beta-N-acetylglucosaminylglycopeptide beta-1,4-galactosyltransferase activity
               |__digalactosyldiacylglycerol synthase activity
               |__fucosylgalactoside 3-alpha-galactosyltransferase activity
               |__galactogen 6-beta-galactosyltransferase activity
               |__galactosylxylosylprotein 3-beta-galactosyltransferase activity 1 rec.
               |__ganglioside galactosyltransferase activity
               |__glycosaminoglycan galactosyltransferase activity
               |__indolylacetyl-myo-inositol galactosyltransferase activity
               |__inositol 3-alpha-galactosyltransferase activity
               |__lactose synthase activity
               |__lactosylceramide 4-alpha-galactosyltransferase activity
               |__lactosylceramide beta-1,3-galactosyltransferase activity
               |__lipopolysaccharide 3-alpha-galactosyltransferase activity
               |__lipopolysaccharide-1,5-galactosyltransferase activity
               |__lipopolysaccharide-1,6-galactosyltransferase activity
               |__N-acetyl-beta-D-glucosaminide beta-(1,3)-galactosyltransferase activity 8 rec.
               |__N-acetylgalactosaminide beta-1,3-galactosyltransferase activity 12 rec.
               |__N-acetyllactosamine synthase activity
               |__N-acetyllactosaminide 3-alpha-galactosyltransferase activity
               |__N-acylsphingosine galactosyltransferase activity
               |__procollagen galactosyltransferase activity 3 rec.
               |__sn-glycerol-3-phosphate 1-galactosyltransferase activity
               |__sn-glycerol-3-phosphate 2-alpha-galactosyltransferase activity
               |__sphingosine beta-galactosyltransferase activity
               |__sucrose 6F-alpha-galactotransferase activity
               |__tRNA-queuosine(34) galactosyltransferase activity
               |__UDP-galactose:glucosylceramide beta-1,4-galactosyltransferase activity
               |__UDP-galactose:N-glycan beta-1,3-galactosyltransferase activity
               |__xylosylprotein 4-beta-galactosyltransferase activity 1 rec.
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Reactome:R-HSA-1964501 "Addition of galactose to Core 6 glycoprotein"