The Chemical Entities of Biological Interest (ChEBI) ontology is downloaded weekly from EMBL-EBI at http://www.ebi.ac.uk/chebi/. The data is made available under the Creative Commons License (CC BY 3.0, http://creativecommons.org/licenses/by/3.0/). For more information see: Degtyarenko et al. (2008) ChEBI: a database and ontology for chemical entities of biological interest. Nucleic Acids Res. 36, D344–D350.
An L-threonine derivative in which L-threonine is linked via its nitrogen to C-6 of the non-reducing-end galactose residue of 3-O-acetyl-alpha-D-galacto-hexodialdo-1,5-pyranosyl-(1->3)-N-acetyl-acetamido-2-deoxy-beta-D-galactosamine; an important threonine-containing epitope of the Proteus penneri O-specific polysaccharide.