2-(L-cystein-S-yl)-L-threonine (2R,3R)-2-amino-2-[(2R)-2-amino-2-carboxyethyl]sulfanyl-3-hydroxybutanoic acid (2R,5R,6R)-2,5-diamino-5-carboxy-6-hydroxy-4-thiaheptanoic acid -2.0156500339508056641 -2.0199999809265136719 202.0412139892578125 202.2299957275390625 A protein modification that effectively cross-links an L-cysteine residue and an L-threonine residue by a thioether bond to form 2-(S-L-cysteinyl)-L-threonine. C 0 H -2 N 0 O 0 S 0 C 7 H 10 N 2 O 3 S 1 C, T Cross-link 2. MOD:01988 PSI-MOD alpha-(L-cystein-S-yl)-L-threonine natural alpha-carbon thioether crosslinked residues crosslinked L-threonine residue