SMILES: C[C@@H]([C@H](C)O)[C@@H](C(=O)[O-])[NH3+]
Description: The molecule is an amino acid zwitterion resulting from a transfer of a proton from the carboxy to the amino group of (4S)-4-hydroxy-L-isoleucine; major species at pH 7.3. It has a role as a plant metabolite. It is a tautomer of a (4S)-4-hydroxy-L-isoleucine.