has part has part has_part lipopolysaccharide PMID:24642373 PMID:24186868 LPS PMID:24506665 chebi_ontology Lipopolysaccharide CHEBI:25062 Liposaccharide natural compounds consisting of a trisaccharide repeating unit (two heptose units and octulosonic acid) with oligosaccharide side chains and 3-hydroxytetradecanoic acid units (they are a major constituent of the cell walls of Gram-negative bacteria). PMID:15589368 CHEBI:14520 CHEBI:16412 lipopolysaccharides KEGG:C00338 PMID:24659348 CHEBI:6494 liposaccharide O-polysaccharide polysaccharide derivative