Term Name:	cystine zwitterion
Synonyms:	3,3'-disulfanediylbis(2-ammoniopropanoate), 3,3'-dithiobis(2-ammoniopropanoate)
Definition:	An amino acid zwitterion that is the tautomer of cystine.
Ontology:	ChEBI [CHEBI:35492]  ( EBI )