oxazole/oxazoline ring crosslinked residues (Cys) L-threonine 5-hydroxyoxazole-4-carbonthionic acid (4Z)-2-[(1S,2R)-1-amino-2-hydroxypropyl]-4-(sulfanylmethylidene)-1,3-oxazol-5(4H)-one [tautomer] -4.0300002098083496094 -4.0313000679016113281 2-[(1S,2R)-1-amino-2-hydroxypropyl]-5-hydroxy-1,3-oxazole-4-carbothioic O-acid 200.0255584716796875 200.2100067138671875 A protein modification that effectively converts an L-cysteine residue and an L-threonine residue to L-threonine 5-hydroxyoxazole-4-carbothionic acid. C 0 H -4 N 0 O 0 S 0 C 7 H 8 N 2 O 3 S 1 C, T CROSSLNK Threonine 5-hydroxy-oxazole-4-carbonthionic acid (Thr-Cys) Cross-link 2. L-threonine 5-hydroxy-oxazole-4-carbonthionic acid MOD:01878 PSI-MOD natural uniprot.ptm:PTM-0458 crosslinked L-cysteine residue crosslinked L-threonine residue