Protein Expression in Mammalian Cells

Volume 801 of the series Methods in Molecular Biology pp 189-211


Identification and Characterization of Protein Glycosylation Using Specific Endo- and Exoglycosidases

  • Paula MagnelliAffiliated withNew England Biolabs Email author 
  • , Alicia BielikAffiliated withNew England Biolabs
  • , Ellen GuthrieAffiliated withNew England Biolabs

* Final gross prices may vary according to local VAT.

Get Access


Enzymatic deglycosylation followed by SDS-PAGE is a valuable method to detect glycan modifications on protein samples. Specific glycosidases were used to remove sugars from glycoproteins in a controlled fashion leaving the protein core intact; the resulting change in molecular weight could be detected as shifts in gel mobility. Alternatively, glycan-sensitive reagents were used to visualize the intensity of glycoprotein bands before and after enzyme treatment. The ease of use of these techniques, which require only basic laboratory instrumentation and reagents, makes them the methodology of choice for initial glycobiology studies. These protocols are also well suited to screen for optimal expression conditions, since multiple glycoprotein samples can be processed at once.

Key words

Glycoprotein N-Glycan O-Glycan O-GlcNAc PNGase F O-Glycosidase Deglycosylation