2-(3-methylbutanoyl)-5-hydroxyoxazole-4-carbothionic acid (4Z)-4-[hydroxy(sulfanyl)methylidene]-2-(3-methylbutanoyl)-1,3-oxazol-5(4H)-one [tautomer] -5.0599999427795410156 -5.06293487548828125 2-(3-methylbutanoyl)-5-hydroxyoxazole-4-carbothionic acid 212.0381317138671875 212.2400054931640625 5-hydroxy-2-(3-methylbutanoyl)-1,3-oxazole-4-carbothioic O-acid A protein modification that effectively converts an L-cysteine residue and an L-leucine residue to 2-(3-methylbutanoyl)-5-hydroxyoxazole-4-carbothionic acid. C 0 H -7 N -1 O 1 S 0 C 9 H 10 N 1 O 3 S 1 C, L Cross-link 2. MOD:01844 MOD_RES 2-(3-methylbutanoyl)-5-hydroxyoxazole-4-carbothionic acid (Leu-Cys) N-term PSI-MOD natural uniprot.ptm:PTM-0448 oxazole/oxazoline ring crosslinked residues (Cys) crosslinked L-cysteine residue crosslinked L-leucine residue