A hexosaminidase specific for non-reducing N-acetyl-D-hexosamine residues in N-acetyl-beta-D-hexosaminides. It acts on glucosides; galactosides; and several oligosaccharides. Two specific mammalian isoenzymes of beta-N-acetylhexoaminidase are referred to as hexosaminidase a and hexosaminidase b. Deficiency of the type A isoenzyme causes tay-sachs disease, while deficiency of both A and B isozymes causes sandhoff disease. The enzyme has also been used as a tumor marker to distinguish between malignant and benign disease.


Symptoms and diagnosis

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