sphingomyelinase c of b. cereus showed two different effects on bovine erythrocytes : in the absence of divalent cations or in the presence of ca2+ alone , the peak of hemolysis shifted to the region from 130 to 160 mosm , without appreciable hydrolysis of sphingomyelin , while in the presence of mg2+ or mg2+ plus ca2+ , the peak of hemolysis further shifted to the region from 160 to 200 mosm with the hydrolysis of sphingomyelin .
C0037903
sphingomyelinase c
C0020291
hydrolysis