Glucosidase Alpha, Acid (GaA)

Lysosomal alpha-glucosidase is an enzyme that is encoded by the GAA gene. Error"s in this gene cause glycogen storage disease type II (Pompe disease).This gene encodes acid alpha-glucosidase, which is essential for the degradation of glycogen to glucose in lysosomes. Different forms of acid alpha-glucosidase are obtained by proteolytic processing. Defects in this gene are the cause of glycogen storage disease II, also known as Pompe disease, which is an autosomal recessive disorder with a broad clinical spectrum. Three transcript variants encoding the same protein have been found for this gene.