Beta-galactosidase BgaB

UniProtKB accession:  A1A399

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Involved in the hydrolysis of transgalactooligosaccharides (TOS). Highly active towards Gal(beta1-4)Gal and Gal(beta1-4)-Gal-containing oligosaccharides. Low activity towards Gal(beta1-3)Gal, lactose and Gal(beta1-3)GalOMe. No activity towards Gal(beta1-6)Gal, Gal(beta1-4)Man, Gal(alpha1-4)Gal, Gal(alpha1-3)Gal(beta1-4)Gal, lactulose, 3'fucosyllactose, lacto-N-fucopentaose I, lacto-N-fucopentaose II, cellobiose, maltose or sucrose. No transglycosylation activity is found at high substrate concentrations (100 mg/ml) and only low transglycosylation activity at lower substrate concentrations (10 mg/ml).