Many proteins in nature exist as glycoproteins, which consist of protein (polypeptide chain) and glycan (sugar chain). The protein structure is determined on the basis of its genetic blueprint, but the information on glycans is not directly encoded by the genome. Therefore, it is difficult to control protein glycosylation.
Click here for original story, Research team identifies a molecular code embedded in protein for regulating its glycosylation
Source: Phys.org