Studies on human N-acetyl-β-d-hexosaminidase C separated from neonatal brain

Abstract
Human brain hexosaminidase C (EC 3.2.1.30) was separated from isoenzymes A and B by Sephadex G-200 gel filtration. Properties of the enzyme were studied, particularly its isoelectric-focusing profile, pI 4.80. Hexosaminidase C is identical with the major residual component of Sandhoff fibroblasts with respect to substrate specificity, pI and activity pH optimum.