In glycosylation engineering, glycoproteins are modified by glycosylation and deglycosylation.Glycosyltransferases and the enzymes of deglycosylation play important roles in the processes.

• 在糖基化工程中，通过酶法对蛋白质进行糖基化修饰和对天然糖蛋白去糖基化是研究糖蛋白结构与功能的重要手段。