Immunogen sequence: AHRVAQAWEL AQFIHHTSKK ADVVLLCGDL NMHPEDLGCC LLKEWTGLHD AYLETRDFKG SEEGNTMVPK NCYVSQQELK PFPFGVRIDY VLYKAVSGFY I; Positive Samples: Mouse liver, Rat liver; Cellular Location: Membrane, Multi-pass membrane protein. Converts sphingomyeli