L-tryptophyl quinone 216.053497314453125 216.19000244140625 29.974178314208984375 29.979999542236328125 natural 6,7 Dione (from Tryptophan) 2-amino-3-(6,7-dioxo-6,7-dihydro-1H-indol-3-yl)-propionic acid 3-[(2S)-2-amino-2-carboxyethyl]-6,7-indolinedione incidental to RESID:AA0149; incidental to RESID:AA0313; From DeltaMass: Average Mass: 30. H -2 O 2 MOD_RES Tryptophylquinone N-(3-carboxy-1-oxopropyl)-L-tryptophan W Quinone L-tryptophyl quinone none (2S)-2-amino-3-(6,7-dioxo-1H-indol-3-yl)propanoic acid C 11 H 8 N 2 O 3 MOD:00157 PSI-MOD A protein modification that effectively converts an L-tryptophan residue to an L-tryptophan quinone. TrpQ quinone carbon oxygenated residue modified L-tryptophan residue