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CHEBI ONTOLOGY - ANNOTATIONS

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.
Term:xanthan
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Accession:CHEBI:189560 term browser browse the term
Definition:Xanthan gum is a polysaccharide produced by the bacteria Xanthomonas campestris. It is composed of pentasaccharide repeat units, comprising two glucose units, two mannose units, and one glucuronic acid unit. Its main chain consists of beta-D-glucose units linked at the 1 and 4 positions. Trisaccharide side chains contain a D-glucuronic acid unit between two D-mannose units linked at the O-3 position of every other glucose residue in the main chain. Approximately one-half of the terminal D-mannose contains a pyruvic acid residue linked via keto group to the 4 and 6 positions, with an unknown distribution. D-Mannose unit linked to the main chain contains an acetyl group at position O-6.
Synonyms:xref: PMID:14538095


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Path 1
Term Annotations click to browse term
  CHEBI ontology 19853
    chemical entity 19851
      molecular entity 19851
        polyatomic entity 19808
          macromolecule 8811
            biomacromolecule 8339
              polysaccharide 8220
                xanthan 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19853
    subatomic particle 19851
      composite particle 19851
        hadron 19851
          baryon 19851
            nucleon 19851
              atomic nucleus 19851
                atom 19851
                  main group element atom 19797
                    p-block element atom 19797
                      carbon group element atom 19738
                        carbon atom 19734
                          organic molecular entity 19734
                            heteroorganic entity 19492
                              organochalcogen compound 19254
                                organooxygen compound 19170
                                  carbohydrates and carbohydrate derivatives 15293
                                    carbohydrate 15293
                                      polysaccharide 8220
                                        homopolysaccharide 5819
                                          glucan 5003
                                            beta-D-glucan 3801
                                              (1->4)-beta-D-glucan 3782
                                                xanthan 0
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