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Alpha-galactosidase is an enzyme, which is derived from the fungus Aspergillus niger. Itâs a homodimeric glycoprotein and it hydrolyzes the terminal alpha-galactosyl moieties (in chemistry moiety is defined as a functional group on a molecule) from glycolipids and glycoproteins.
Î²-galactosidase is an exoglycosidase which hydrolyzes the Î²- glycosidic bond formed between a galactose and its organic moiety. It may also cleave fucosides and arabinosides but with much lower efficiency.