α-Galactosidase is a glycoside hydrolase enzyme that catalyses the following reaction: Hydrolysis of terminal, non-reducing α-D-galactose residues in α-D-galactosides, including galactose oligosaccharides, galactomannans and galactolipidsIt catalyzes many catabolic processes, including cleavage of glycoproteins, glycolipids, and polysaccharides. Wikipedia