Term Name:	S-methyl-L-methionine zwitterion
Synonyms:	(2S)-2-azaniumyl-4-(dimethylsulfaniumyl)butanoate, S-methyl-L-methionine
Definition:	A sulfonium compound that is a tautomer of S-methyl-L-methionine, arising from transfer of a proton from the carboxy to the amino group; major species at pH 7.3.
Ontology:	ChEBI [CHEBI:58252]  ( EBI )