modified L-glutamic acid residue 5-glutamyl allysine 127.06333160400390625 127.1399993896484375 256.105926513671875 256.25 A protein modification that effectively converts an L-glutamic acid residue to 5-glutamyl allysine. hypothetical (2S)-2-([(4S)-4-amino-4-carboxybutanoyl]amino)-6-oxohexanoic acid 5-glutamyl allysine C 11 H 16 N 2 O 5 2-(5-glutamyl)amino-6-oxohexanoic acid C 6 H 9 N 1 O 2 N2-(isoglutamyl)allysine alpha-(gamma-glutamyl)allysine E none N2-(gamma-glutamyl)allysine MOD:01607 PSI-MOD