Purified human liver acid β-d-galactosidases possessing activity towards G(M1)-ganglioside and lactosylceramide

Abstract
Studies with purified human liver acid .beta.-D-galactosidases (EC 3.2.1.23) indicated that 4-methylumbelliferyl .beta.-D-galactosidase and GM1-ganglioside .beta.-D-galactosidase activities were identical with lactosylceramidase II activity. Evidence for this included co-purification of all enzyme activities by affinity chromatography to yield a single band on polyacrylamide-gel electrophoresis and coincident elution from Sepharose 6B of all 3 enzyme activities.