Bovine kidney β-N-acetylglucosaminidase is a lysosomal enzyme used to hydrolyze N-acetyl-β-D-glucosaminides and N-acetyl-β-Dgalactosaminides. It is used in chemoenzymatic synthesis of oligosaccharides based on their effective transglycosylation of β-GlcNAc and β-GalNAcc. It may be a useful tool to study Alzheimer′s Disease .
Biochem/physiol Actions
β-N-Acetylglucosaminidase from Streptococcus pneumoniae is an extracellular glycosidase and has broad specificity over the β1-3 and β1-6 linkages present in mucins. It belongs to the glycoside hydrolase family 85 (GH85). Also called endo-β-N-acetylglucosaminidase, it cleaves at the asparagine residue of the di-N-acetylchitobiose structure in oligosaccharides and acts on fucosylated N-glycan core. Its deglycosylation functionality is exploited in studying functions of glycoproteins.
Purification Methods
Purify it by chromatography on DEAD-Biogel, hydroxylapatite chromatography and gel filtration through Sephacryl S200. Two isoforms: a hexosaminidase EI with Km 177WM
