2.4.1.90 glycoprotein - 2.4.1.90 glycoprotein structure of mucin-type sugar depends on blood group 2.4.1.90 glycoprotein the enzyme is 75% more active in its desialylated form than in the sialylated form 2.4.1.90 glycoprotein the enzyme has 10 N-glycosylation sites 2.4.1.90 glycoprotein the enzyme is is N-glycosylated and without mucin-type glycosylation