a sphingomyelin + H2O = phosphocholine + an N-acylsphing-4-enine + H(+)
a sphingomyelin + h2o = phosphocholine + an n-acylsphing-4-enine + h(+)
a sphingomyelin + H2O = phosphocholine + an N-acylsphing-4-enine + H(+)
a sphingomyelin + h2o = phosphocholine + an n-acylsphing-4-enine + h(+)