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 that is the alpha-(2->4)-interlinked homopolymer of 5,7-diacetamido-8-O-acetyl-3,5,7,9-tetradeoxy-D-glycero-alpha-L-galacto-nonulosonic acid. It is the O-specific chain of the lipolysaccharide from Legionella pneumophila serogroup 1.