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 amino trisaccharide comprised of an 6-sulfated N-acetylglucosamine residue linked beta(1->3) to a galactose residue, which is itself linked beta(1->4) to an N-acetylglucosamine residue.