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.
The N-glycosyl compound formed from the trisaccharide alpha-D-Gal-(1->3)-beta-D-Gal-(1->4)-beta-D-Glc by replacement of the OH at the anomeric centre of the glucose residue by an acetylamino group.