2-(S-L-cysteinyl)-L-phenylalanine (2R)-2-amino-2-[(2R)-2-amino-2-carboxyethyl]sulfanyl-3-phenylpropanoic acid (2R,5R)-2,5-diamino-3-thia-2-phenylmethylhexanedioic acid -2.0156500339508056641 -2.0199999809265136719 2-(L-cystein-S-yl)-L-phenylalanine 248.06195068359375 248.3000030517578125 A protein modification that effectively cross-links an L-cysteine residue and an L-phenylalanine residue by a thioether bond to form 2-(S-L-cysteinyl)-L-phenylalanine. C 0 H -2 N 0 O 0 S 0 C 12 H 12 N 2 O 2 S 1 C, F CROSSLNK 2-cysteinyl-L-phenylalanine (Cys-Phe) Cross-link 2. MOD:00345 PSI-MOD alpha-(L-cystein-S-yl)-L-phenylalanine natural uniprot.ptm:PTM-0012 alpha-carbon thioether crosslinked residues crosslinked L-phenylalanine residue