FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term galactosylxylosylprotein 3-beta-galactosyltransferase activity ID (Ontology) GO:0047220 (Gene Ontology)
Definition Catalysis of the reaction: 4-beta-D-galactosyl-O-beta-D-xylosylprotein + UDP-galactose = 3-beta-D-galactosyl-4-beta-D-galactosyl-O-beta-D-xylosylprotein + UDP.[ EC:2 ]
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Genes (FBgn)GO_MOLECULAR_FUNCTION
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 Genes
 galactosylxylosylprotein 3-beta-galactosyltransferase activity (all annotations which use CV term, excluding "NOT" statements)
     enables | galactosylxylosylprotein 3-beta-galactosyltransferase activity
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UDP-glycosyltransferase activity
 |__UDP-galactosyltransferase activity____________
galactosyltransferase activity                    |
 |__UDP-galactosyltransferase activity____________|
catalytic activity, acting on a protein           |
 |__catalytic activity, acting on a glycoprotein__|
                                                  galactosylxylosylprotein 3-beta-galactosyltransferase activity  1 rec.
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Is a UDP-galactosyltransferase activity
catalytic activity, acting on a glycoprotein
Part of
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Synonyms
  • "galactosyltransferase II activity" RELATED[ EC:2 ]
    "UDP-galactose:4-beta-D-galactosyl-O-beta-D-xylosylprotein 3-beta-D-galactosyltransferase activity" RELATED[ EC:2 ]
    "UDPgalactose:4-beta-D-galactosyl-O-beta-D-xylosylprotein 3-beta-D-galactosyltransferase activity" RELATED[ EC:2 ]
    "uridine diphosphogalactose-galactosylxylose galactosyltransferase activity" RELATED[ EC:2 ]
Secondary IDs
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EC:2.4.1.134
MetaCyc:2.4.1.134-RXN
Reactome:R-HSA-1889978 "B3GALT6 transfers Gal to the tetrasaccharide linker"
Reactome:R-HSA-4420365 "Defective B3GALT6 does not transfer Gal to the tetrasaccharide linker"
RHEA:11780