β-Galactosidase is a member of the glycoside hydrolase clan A (GH-A) family. It is widely present in microorganisms, which includes both prokaryotes and eukaryotes.
Application:
β-Galactosidase from Aspergillus oryzae has been used:
in in vitro nuclear magnet resonance (NMR)
as a standard in the β-galactosidase assay to determine the concentration of cell-associated β-galactosidase
to modify sugar residues on the surface of the mutant slime cells to study the adhesive properties