Accepted name: sphingomyelin phosphodiesterase
Reaction: a sphingomyelin + H2O = a ceramide + phosphocholine
Glossary: a ceramide = an N-acylsphingosine
Other name(s): neutral sphingomyelinase
Systematic name: sphingomyelin cholinephosphohydrolase
Comments: Has very little activity on phosphatidylcholine.
1.  Barnholz, Y., Roitman, A. and Gatt, S. Enzymatic hydrolysis of sphingolipids. II. Hydrolysis of sphingomyelin by an enzyme from rat brain. J. Biol. Chem. 241 (1966) 3731–3737. [PMID: 5916388]
2.  Chatterjee, S. and Ghosh, N. Neutral sphingomyelinase from human urine. Purification and preparation of monospecific antibodies. J. Biol. Chem. 264 (1989) 12554–12561. [PMID: 2545711]
3.  Heller, M. and Shapiro, B. Enzymic hydrolysis of sphingomyelin by rat liver. Biochem. J. 98 (1966) 763–769. [PMID: 5911524]
4.  Kanfer, J.N., Young, O.M., Shapiro, D. and Brady, R.O. The metabolism of sphingomyelin. I. Purification and properties of a sphingomyelin-cleaving enzyme from rat liver tissue. J. Biol. Chem. 241 (1966) 1081–1084. [PMID: 5933867]
[EC created 1972]