Term Name:	diphthine
Synonyms:	(1S)-3-{4-[(2S)-2-amino-2-carboxyethyl]-1H-imidazol-2-yl}-1-carboxy-N,N,N-trimethylpropan-1-aminium, 2-[(3S)-3-carboxy-3-(trimethylammonio)propyl]-L-histidine, Diphthine, EF-2 diphthine, Elongation factor 2 diphthine
Definition:	A quaternary ammonium ion consisting of L-histidine with a 3-(trimethylammonio)-3-carboxypropyl group at the 2-position of the the imidazole ring.
Ontology:	ChEBI [CHEBI:18054]  ( EBI )