ID 3.1.4.12 DE Sphingomyelin phosphodiesterase. AN Acid sphingomyelinase. AN Neutral sphingomyelinase. CA Sphingomyelin + H(2)O = N-acylsphingosine + choline phosphate. CC -!- Has very little activity on phosphatidylcholine. DR Q10916, ASM1_CAEEL ; Q23498, ASM2_CAEEL ; Q9UAY4, ASM3_CAEEL ; DR Q0VD19, ASM_BOVIN ; P17405, ASM_HUMAN ; Q04519, ASM_MOUSE ; DR Q6UWV6, ENPP7_HUMAN; Q5EZ72, ENPP7_RAT ; Q9NY59, NSMA2_HUMAN; DR Q9JJY3, NSMA2_MOUSE; O35049, NSMA2_RAT ; Q6PFJ7, NSMA3_DANRE; DR Q9NXE4, NSMA3_HUMAN; Q6ZPR5, NSMA3_MOUSE; Q5XHG1, NSMA3_XENLA; DR O45870, NSMA_CAEEL ; Q9VZS6, NSMA_DROME ; O60906, NSMA_HUMAN ; DR O70572, NSMA_MOUSE ; Q9ET64, NSMA_RAT ; O74369, NSMA_SCHPO ; DR P09599, PHL1_BACCE ; Q72P44, PHL1_LEPIC ; P59115, PHL1_LEPIN ; DR P11889, PHL2_BACCE ; P59116, PHL2_LEPIN ; P33377, PHL3_BACCE ; DR Q9RLV9, PHLC_LISIV ; P80924, PHLC_STAIN ; P17627, PHL_LEPIR ; DR Q1ZXD9, Y8017_DICDI; //