PMID-sentid Pub_year Sent_text compound_name comp_offset prot_official_name organism prot_offset 16987101-6 2007 HPLC-electrospray ionization-MS/MS analysis demonstrated that in IPCs (inositolphosphorylceramides) of 4Delta.Lass5, the very long chain fatty acids (C26 and C24) account for <1% instead of the normal >97%. 4delta 103-109 ceramide synthase 5 Mus musculus 110-115