The molecule is a sulfur-containing amino acid obtained by the oxidation of two cysteine molecules which are then linked via a disulfide bond. It has a role as a human metabolite and a mouse metabolite. It is an organic disulfide, a sulfur-containing amino acid and a cysteine derivative. It is a tautomer of a cystine zwitterion.
2-amino-3-[(2-amino-2-carboxyethyl)disulfanyl]propanoic acid