The Presence of Fucosyltransferases with Different Substrate Specificity in Human Parotid Saliva

Abstract
Using glycoproteins and milk oligosaccharides as substrate acceptors, we demonstrated at leaet two fucosyltransferases in human parotid saliva. One enzyme transferred L-fucose from GDP-fucose to the C-3 position of N-acetylglucosamine or glucose residue of oligosaccharide chains, and the other transferred to the C-4 position of N-acetylglucosamine residue of oligosaccharide chains.