Term Name:	ergothioneine
Synonyms:	(2S)-3-(2-mercapto-1H-imidazol-5-yl)-2-(trimethylammonio)propanoate, (2S)-3-(2-mercapto-1H-imidazol-5-yl)-2-(trimethylazaniumyl)propanoate, (alphaS)-alpha-carboxy-2,3-dihydro-N,N,N-trimethyl-2-thioxo-1H-imidazole-4-ethanaminium inner salt, (S)-(1-carboxy-2-(2-mercaptoimidazol-4-yl)ethyl)trimethylammonium hydroxide, 2-mercaptohistidine trimethylbetaine, 3-(2-sulfanylidene-1,3-dihydroimidazol-4-yl)-2-trimethylammonio-propanoate, ergothionine, erythrothioneine, L-ergothioneine, L-thioneine, sympectothion, thiolhistidine-betaine, thiolhistidinebetaine
Definition:	A L-histidine derivative that is Nα,Nα,Nα-trimethyl-L-histidine in which the hydrogen at position 2 on the imdazole ring is replaced by a mercapto group. A naturally occurring metabolite of histidine synthesized by bacteria and fungi with antioxidant properties. It is found ubiquitously in plants and animals and is present in many human foodstuffs.
Ontology:	ChEBI [CHEBI:4828]  ( EBI )