L-cysteine methyl disulfide 148.9969024658203125 149.2400054931640625 45.987720489501953125 46.090000152587890625 C 1 H 2 S 1 L-3-(methyldithio)alanine 2-amino-3-methyldisulfanylpropanoic acid L-cysteine methyl disulfide 2-azanyl-3-(methyldisulfanediyl)-propanoic acid S-methylthiocysteine C 4 H 7 N 1 O 1 S 2 S-methylthio-L-cysteine A protein modification that effectively converts an L-cysteine residue to L-cysteine methyl disulfide. MOD:00110 Methylthio 2-amino-3-(methyldisulfanediyl)propanoic acid mmts methyl methanethiolsulfonate derivatized cysteine 2-amino-3-(methyldithio)propanoic acid Produced artifactually by reaction of cysteine residues with methyl methanethiosulfonate (MMTS) [JSG], but also naturally in bacteria [PMT]. (2R)-2-amino-3-(methyldisulfanediyl)propanoic acid C natural Beta-methylthiolation MOD_RES Cysteine methyl disulfide PSI-MOD methyl methanethiosulfonate derivatized cysteine none reagent derivatized residue modified L-cysteine residue methylthiolated residue disulfide conjugated residue