The Enzyme Database

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Accepted name: N-acetyllactosamine synthase
Reaction: UDP-α-D-galactose + N-acetyl-D-glucosamine = UDP + N-acetyllactosamine
Other name(s): UDP-galactose—N-acetylglucosamine β-D-galactosyltransferase; uridine diphosphogalactose-acetylglucosamine galactosyltransferase; β-1,4-galactosyltransferase; acetyllactosamine synthetase; lactosamine synthase; lactosamine synthetase; lactose synthetase A protein; N-acetyllactosamine synthetase; UDP-galactose N-acetylglucosamine β-4-galactosyltransferase; UDP-galactose-acetylglucosamine galactosyltransferase; UDP-galactose-N-acetylglucosamine β-1,4-galactosyltransferase; UDP-galactose-N-acetylglucosamine galactosyltransferase; β1-4-galactosyltransferase; UDP-Gal:N-acetylglucosamine β1-4-galactosyltransferase; β1-4GalT; NAL synthetase; UDP-β-1,4-galactosyltransferase; Gal-T; UDP-galactose:N-acetylglucosaminide β1-4-galactosyltransferase; UDPgalactose:N-acetylglucosaminyl(β1-4)galactosyltransferase; β-N-acetylglucosaminide β1-4-galactosyltransferase; UDP-galactose:N-acetyl-D-glucosamine 4-β-D-galactosyltransferase
Systematic name: UDP-α-D-galactose:N-acetyl-D-glucosamine 4-β-D-galactosyltransferase
Comments: The reaction is catalysed by a component of EC (lactose synthase), which is identical with EC (β-N-acetylglucosaminyl-glycopeptide β-1,4-galactosyltransferase), and by an enzyme from the Golgi apparatus of animal tissues. Formerly listed also as EC
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 9054-94-8
1.  Deshmukh, D.S., Bear, W.D. and Soifer, D. Isolation and characterization of an enriched Golgi fraction from rat brain. Biochim. Biophys. Acta 542 (1978) 284–295. [PMID: 99178]
2.  Helting, T. and Erbing, B. Galactosyl transfer in mouse mastocytoma: purification and properties of N-acetyllactosamine synthetase. Biochim. Biophys. Acta 293 (1973) 94–104. [PMID: 4631039]
3.  Hill, R.L. and Brew, K. Lactose synthetase. Adv. Enzymol. Relat. Areas Mol. Biol. 43 (1975) 411–490. [PMID: 812340]
4.  Humphreys-Beher, M.G. Isolation and characterization of UDP-galactose:N-acetylglucosamine 4 β-galactosyltransferase activity induced in rat parotid glands treated with isoproterenol. J. Biol. Chem. 259 (1984) 5797–5802. [PMID: 6201486]
5.  Schachter, H., Jabbal, I., Hudgin, R.L., Pinteric, L., McGuire, E.J. and Roseman, S. Intracellular localization of liver sugar nucleotide glycoprotein glycosyltransferases in a Golgi-rich fraction. J. Biol. Chem. 245 (1970) 1090–1100. [PMID: 4392041]
[EC created 1976 (EC created 1980, incorporated 1984)]

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