EC - Lipopolysaccharide 3-α-galactosyltransferase

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IntEnz Enzyme Nomenclature


Accepted name:
lipopolysaccharide 3-α-galactosyltransferase
Other names:
UDP-galactose:lipopolysaccharide α,3-galactosyltransferase
UDP-galactose:polysaccharide galactosyltransferase
UDPgalactose:lipopolysaccharide 3-α-D-galactosyltransferase
uridine diphosphate galactose:lipopolysaccharide α-3-galactosyltransferase
uridine diphosphogalactose-lipopolysaccharide α,3-galactosyltransferase
lipopolysaccharide galactosyltransferase
lipopolysaccharide 1,3-galactosyltransferase
UDP-galactose:lipopolysaccharide 3-α-D-galactosyltransferase
Systematic name:
UDP-α-D-galactose:lipopolysaccharide 3-α-D-galactosyltransferase



Transfers D-galactosyl residues to D-glucose in the partially completed core of lipopolysaccharide [cf. EC (lipopolysaccharide N-acetylglucosaminyltransferase), EC (lipopolysaccharide glucosyltransferase I) and EC (lipopolysaccharide glucosyltransferase II)].

Links to other databases

Enzymes and pathways: NC-IUBMB , BRENDA , ExplorEnz , ENZYME@ExPASy , KEGG , MetaCyc , UniPathway
Structural data: CSA , EC2PDB
Gene Ontology: GO:0008918
CAS Registry Number: 9073-98-7


  1. Endo, A. and Rothfield, L.
    Studies of a phospholipid-requiring bacterial enzyme. I. Purification and properties of uridine diphosphate galactose: lipopolysaccharide α-3-galactosyl transferase.
    Biochemistry 8 : 3500-3507 (1969). [PMID: 4898284]
  2. Wollin, R., Creeger, E.S., Rothfield, L.I., Stocker, B.A.D. and Lindberg, A.A.
    Salmonella typhimurium mutants defective in UDP-D-galactose:lipopolysaccharide α-1,6-D-galactosyltransferase. Structural, immunochemical, and enzymologic studies of rfaB mutants.
    J. Biol. Chem. 258 : 3769-3774 (1983). [PMID: 6403519]

[EC created 1972, modified 2002]