Alpha-gal A is an alias for the gene, Galactosidase alpha, in humans. Other names include: Alpha-galactosidase A; Alpha-D-galactosidase A; Alpha-D-galactoside galactohydrolase; Melibiase; Agalsidase; Alpha-galactosidase A ; GALA; galactosidase, alpha. The encoded protein is an enzyme with an amino acid length of 429 and a mass of 48.8 kDa. Other isoforms may exist. Alpha-gal A is a member of the Glycosyl hydrolase 27 family. This gene shares homology with other species, including: Frog.