α1,3-galactosyltransferase (α1,3GalT)

α1,3-galactosyltransferase (α1,3GalT) Accepted Name N-acetyllactosaminide 3-alpha-galactosyltransferase. Alternative Name(s) Alpha-galactosyltransferase. Beta-D-galactosyl-N-acetylglucosaminylglycopeptide alpha-1,3- galactosyltransferase. Galactosyltransferase. Glucosaminylglycopeptide alpha-1,3-galactosyltransferase. N-acetyllactosaminide alpha-1,3-galactosyltransferase. UDP-Gal:Gal-beta-1->4GlcNAc-R alpha-1->3-galactosyltransferase. UDP-Gal:N-acetyllactosaminide alpha-1,3-D-galactosyltransferase. UDP-galactose-acetyllactosamine alpha-D-galactosyltransferase. UDPgalactose:beta-D-galactosyl-beta-1,4-N-acetyl-D-glucosaminyl- glycopeptide alpha-1,3-D-galactosyltransferase. Uridine diphosphogalactose-acetyllactosamine alpha- 1->3-galactosyltransferase. Uridine diphosphogalactose-acetyllactosamine galactosyltransferase. Uridine diphosphogalactose-galactosylacetylglucosaminylgalactosyl- glucosylceramide galactosyltransferase. Reaction catalysed UDP-alpha-D-galactose  +  beta-D-galactosyl-(1->4)-beta-N-acetyl-D-glucosaminyl-R  <=>  UDP  +  alpha-D-galactosyl-(1->3)-beta-D-galactosyl-(1->4)-beta-N-acetylglucosaminyl-R Comment(s) Acts on beta-galactosyl-1,4-N-acetylglucosaminyl termini on asialo- alpha(1)-acid glycoprotein and N-acetyllactosamine (beta-D- galactosyl-1,4-N-acetyl-beta-D-glucosamine), but not on 2'-fucosylated-N-acetyllactosamine. The non-reducing terminal N-acetyllactosamine residues of glycoproteins can also act as acceptor. Formerly EC 2.4.1.124 and EC  2.4.1.151 .