initial characterization of the enzymatic content of this fraction revealed it to be enriched in certain hydrolytic enzymes ( acid phosphatase , carboxypeptidase , cathepsin b , acid lipase , sphingomyelinase , and phospholipase a ) , but strikingly depleted in all sulfatases , beta-glucuronidase , and the non-lysosomal protease , plasminogen activator .
C0020291
hydrolytic
C0037903
sphingomyelinase