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.
A polysaccharide derivative composed of a backbone of linear octasaccharide derivative repeating units consisting of beta-QuiN4Fm-(1->4)-alpha-GalNAcAN-(1->4)-alpha-GalNAcAN-(1->3)-beta-QuiNAc-(1->2)-beta-QuiN4Fm-(1->4)-alpha-GalNAcAN-(1->4)-alpha-GalNAcAN-(1->3)-beta-QuiNAc connected by beta-(1->2) linkages.