Ceramide synthase 3 MFWTFKEWFW LERFWLPPTI KWSDLEDHDG LVFVKPSHLY VTIPYAFLLL IIRRVFEKFV ASPLAKSFGI KETVRKVTPN TVLENFFKHS TRQPLQTDIY GLAKKCNLTE RQVERWFRSR RNQERPSRLK KFQEACWRFA FYLMITVAGI AFLYDKPWLY DL