Term Name:	homocystine zwitterion
Synonyms:	4,4'-disulfanediylbis(2-ammoniobutanoate), 4,4'-disulfanediylbis(2-azaniumylbutanoate), homocystine dizwitterion
Definition:	Dizwitterionic form of homocystine arising from transfer of two protons from the carboxy to the amino groups; major species at pH 7.3.
Ontology:	ChEBI [CHEBI:58163]  ( EBI )