GDP-fucose protein O-fucosyltransferase and related proteins. O-fucosyltransferase-like proteins are GDP-fucose dependent enzymes with similarities to the family 1 glycosyltransferases (GT1). They are soluble ER proteins that may be proteolytically cleaved from a membrane-associated preprotein, and are involved in the O-fucosylation of protein substrates, the core fucosylation of growth factor receptors, and other processes.

Alpha 1-6-fucosyltransferase. Alpha 1,6-fucosyltransferase (Fut8) transfers a fucose moiety from GDP-fucose to the reducing terminal N-acetylglucosamine of the core structure of Asn-linked oligosaccharides, in a process termed core fucosylation. Core fucosylation is essential for the function of growth factor receptors. O-fucosyltransferase-like proteins are GDP-fucose dependent enzymes with similarities to the family 1 glycosyltransferases (GT1). They are soluble ER proteins that may be proteolytically cleaved from a membrane-associated preprotein, and are involved in the O-fucosylation of protein substrates, the core fucosylation of growth factor receptors, and other processes.