has role is deprotonated form of L-thialysinium metabolite L-cysteine thioether protein synthesis inhibitor L-thialysine CHEBI:497734 A cysteine derivative that is the <i>S</i>-(2-aminoethyl) analogue of <small>L</small>-cysteine; reported to have cytotoxic effects. EC 5.4.3.2 (lysine 2,3-aminomutase) inhibitor non-proteinogenic L-alpha-amino acid