IUBMB Enzyme Nomenclature

EC 2.4.1.122

Accepted name: glycoprotein-N-acetylgalactosamine 3-β-galactosyltransferase

Reaction: UDP-α-D-galactose + glycoprotein N-acetyl-D-galactosamine = UDP + glycoprotein D-galactosyl-(1→3)-N-acetyl-D-galactosamine

Other name(s): uridine diphosphogalactose-mucin β-(1→3)-galactosyltransferase; UDP-galactose:glycoprotein-N-acetyl-D-galactosamine 3-β-D-galactosyltransferase

Systematic name: UDP-α-D-galactose:glycoprotein-N-acetyl-D-galactosamine 3-β-D-galactosyltransferase

Comments: The non-reducing O-serine-linked N-acetylgalactosamine residues in mucin glycoproteins can act as acceptors.

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number: 97089-61-7

References:

1. Hesford, F.J., Berger, E.G. and van den Eijnden, D.H. Identification of the product formed by human erythrocyte galactosyltransferase. Biochim. Biophys. Acta 659 (1981) 302-311. [PMID: 6789880]

2. Mendicino, J., Sivakami, S., Davila, M. and Chandrasekaran, E.V. Purification and properties of UDP-gal:N-acetylgalactosaminide mucin: β1,3-galactosyltransferase from swine trachea mucosa. J. Biol. Chem. 257 (1982) 3987-3994. [PMID: 6801057]

3. Schachter, H., Narasimhan, S., Gleeson, P. and Vella, G. Glycosyltransferases involved in elongation of N-glycosidically linked oligosaccharides of the complex or N-acetyllactosamine type. Methods Enzymol. 98 (1983) 98-134. [PMID: 6366476]

[EC 2.4.1.122 created 1984]


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