L-cysteine 5-amino-3,4,5,6-tetrahydropyridine-2,5-dicarboxylic acid -53.023868560791015625 -53.04000091552734375 225.0572052001953125 225.2700042724609375 L-cysteine 5-aminopiperideine-2,5-dicarboxylic acid L-cysteine 5-amino-3,4,5,6-tetrahydropyridine-2,5-dicarboxylic acid C, S, S A protein modification that crosslinks two serine residues and a cysteine residue by formation of a 5-amino-3,4,5,6-tetrahydropyridine-2,5-dicarboxylic acid. N-term (5R,6R)-5-amino-6-[(1R)-1-amino-2-sulfanylethyl]-3,4,5,6-tetrahydropyridine-2,5-dicarboxylic acid Cross-link 3. natural MOD:01394 PSI-MOD H -5 O -3 CROSSLNK 5-amino-piperideine-2,5-dicarboxylic acid C 9 H 11 N 3 O 2 S 1 pyridinyl ring crosslinked residues crosslinked L-cysteine residue crosslinked L-serine residue