Reaction: GDP-β-L-fucose + (1→4)-β-D-galactosyl-N-acetyl-D-glucosaminyl-R = GDP + (1→4)-β-D-galactosyl-[α-(1→3)-L-fucosyl]-N-acetyl-D-glucosaminyl-R
For diagram click here.
Other name(s): Lewis-negative α-3-fucosyltransferase; plasma α-3-fucosyltransferase; guanosine diphosphofucose-glucoside α1→3-fucosyltransferase; galactoside 3-fucosyltransferase; GDP-L-fucose:1,4-β-D-galactosyl-N-acetyl-D-glucosaminyl-R 3-L-fucosyltransferase; GDP-β-L-fucose:1,4-β-D-galactosyl-N-acetyl-D-glucosaminyl-R 3-L-fucosyltransferase
Systematic name: GDP-β-L-fucose:1,4-β-D-galactosyl-N-acetyl-D-glucosaminyl-R 3-α-L-fucosyltransferase
Comments: Normally acts on a glycoconjugate where R (see reaction) is a glycoprotein or glycolipid. This enzyme fucosylates on O-3 of an N-acetylglucosamine that carries a galactosyl group on O-4, unlike EC 220.127.116.11, 3-galactosyl-N-acetylglucosaminide 4-α-L-fucosyltransferase, which fucosylates on O-4 of an N-acetylglucosamine that carries a galactosyl group on O-3.
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number: 39279-34-0
1. Johnson, P.H., Yates, A.D. and Watkins, W.M. Human salivary fucosyltransferase: evidence for two distinct α-3-L-fucosyltransferase activities one of which is associated with the Lewis blood Le gene. Biochem. Biophys. Res. Commun. 100 (1981) 1611-1618. [PMID: 7295318]
2. 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]
3. Ma, B., Wang, G., Palcic, M.M., Hazes, B. and Taylor, D.E. C-terminal amino acids of Helicobacter pylori α1,3/4 fucosyltransferases determine type I and type II transfer. J. Biol. Chem. 278 (2003) 21893-21900. [PMID: 12676935]