3.2.1.113 glycoprotein - 664385, 681766, 753754 3.2.1.113 glycoprotein 0.88% hexoses 646585 3.2.1.113 glycoprotein 19.4% neutral and 3.9% amino sugars 135991 3.2.1.113 glycoprotein three potential N-glycosylation sites, one of which is used 646614