In either case, we form a glycocitic bond as a result of the action of glycostal transferases. So glycosyl transferases use an activated sugar, usually a sugar nucleotide, such as in this case, Eurogene diphosphate glucose, to basically catalyze the formation of that glycosytic bond. Now, just like any other group of enzymes, glycosylatransphrases are highly specific molecules. They basically catalyze specific sugar reactions. They use specific sugars to form glycocitic bond. So what exactly does that mean?