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Effect of deglycosylation on binding to gB2. Immobilized gB2 was selectively deglycosylated by incubation with sialidase A, endo-O-glycosidase, PNGase F, or a mixture of all three enzymes. Sialidase A removes nonreducing terminal and branched sialic acid residues. Endo-O-glycosidase removes O-linked glycans by cleaving Ser/Thr-linked unsubstituted Galβ(1-3)GalNAcα disaccharides. PNGase F removes N-linked glycans.
