Guanosine Diphosphate-l-Fucose Glycopeptide Fucosyltransferase Activity in Corynebacterium insidiosum1

The biosynthesis of a phytotoxic glycopeptide of Corynebacterium insidiosuminvolves guanosine diphosphate-l-fucosyltransferase activity. This enzyme activity is most consistently associated with the cellular membranes fraction. The optimal pH for the transfer reaction is 7.5. The partially hydrolyzed toxin serves as an acceptor (primer) of l-fucose.