thioether crosslinked residues 2'-(S-L-cysteinyl)-6'-hydroxy-L-tryptophan sulfoxide 2'-(S-L-cysteinyl)-6'-hydroxy-L-tryptophan sulfoxide 2-((2R)-2-amino-2carboxyethyl)sulfinyl-3-((2S)-2-amino-2-carboxyethyl)-1H-indole 29.974178314208984375 29.979999542236328125 319.06268310546875 319.329986572265625 6'-hydroxy-S-oxo-tryptathionine A protein modification that effectively cross-links an L-cysteine residue and an L-tryptophan residue by a thioether bond to form 2'-(S-L-cysteinyl)-6'-hydroxy-L-tryptophan sulfoxide. C 0 H -2 N 0 O 2 S 0 C 14 H 13 N 3 O 4 S 1 C, W CROSSLNK 2'-cysteinyl-6'-hydroxytryptophan sulfoxide (Trp-Cys) Cross-link 2. MOD:01380 PSI-MOD natural uniprot.ptm:PTM-0338 crosslinked L-tryptophan residue