SMS1beta sphingomyelin synthase 1 http://identifiers.org/mgd/MGI:2444110 Gene SMS1 Tmem23 O protein coding gene 9530058O11Rik SMS1alpha2 9530058O11Rik|SMS1|SMS1alpha2|SMS1beta|Tmem23|SMS1gamma|SMS1alpha1 MGI:2444110 Sgms1 SMS1gamma genetic mapping SMS1alpha1 -