L-cysteine methyl ester 134.0275726318359375 134.1699981689453125 14.015649795532226562 14.029999732971191406 2-amino-3-mercaptopropanoic methyl ester 2-amino-3-sulfanylpropanoic methyl ester A protein modification that effectively converts an L-cysteine residue to L-cysteine methyl ester. C C 1 H 2 N 0 O 0 S 0 C 4 H 8 N 1 O 2 S 1 C-term L-cysteine methyl ester MOD:00114 MOD_RES Cysteine methyl ester Methyl Methylation OMeCys PSI-MOD Secondary to RESID:AA0102; secondary to RESID:AA0103; secondary to RESID:AA0104. Unimod:34 mecysteine methyl (2R)-2-amino-3-sulfanylpropanoate methyl L-cysteinate methyl esterified L-cysteine natural uniprot.ptm:PTM-0105 monomethylated L-cysteine alpha-carboxyl methylated residue