L-glutamyl 5-omega-hydroxyceramide ester (S)-2-amino-5-[30-((2S,3R,4E)-1,3-dihydroxyicos-4-en-2-ylamino)-30-oxotriacontan-1-yloxy]-5-oxopentanoic acid 2-[30-(isoglutamyloxy)triacontanoyl]icosasphingosine 760.7308349609375 761.30999755859375 888.7894287109375 889.44000244140625 A protein modification that effectively converts an L-glutamic acid residue to L-glutamyl 5-omega-hydroxyceramide ester. C 50 H 96 N 0 O 4 C 55 H 104 N 2 O 6 L-glutamyl 5-omega-hydroxyceramide ester LIPID Omega-hydroxyceramide glutamate ester MOD:00352 PSI-MOD Q natural uniprot.ptm:PTM-0236 modified L-glutamine residue lipoconjugated residue