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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:S. flexneri serotype 5a O-polysaccharide (O factor 9-positive)
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Accession:CHEBI:78714 term browser browse the term
Definition:A polysaccharide derivative comprised of a [2)-alpha-L-Rhap(III)-(1->2)-alpha-L-Rhap(II)-(1->3)-alpha-L-Rhap(I)-(1->3)-beta-D-GlcpNAc-(1->] tetrasaccharide repeat modified by the (1->3) linkage of an alpha-D-glucosyl group to the Rha(II) residue and by addition of an acetyl group to either O-3 or O-4 of many of the Rha(III) residues (35% to O-3; 25% to O-4). The structure provided is representative of that in Shigella flexneri serotype 5a and shows the most common repeating unit.
Synonyms:related_synonym: Formula=(C34H55NO23)nH2O;   [2)-alpha-L-Rha(III)3/4Ac-(1->2)-[alpha-D-Glc-(1->3)]-alpha-L-Rha(II)-(1->3)-alpha-L-Rha(I)-(1->3)-beta-D-GlcNAc-(1->]n;   [2)-alpha-L-Rhap(III)3/4Ac-(1->2)-[alpha-D-Glcp-(1->3)]-alpha-L-Rhap(II)-(1->3)-alpha-L-Rhap(I)-(1->3)-beta-D-GlcpNAc-(1->]n
 xref: PMID:20546712;   PMID:22724405;   PMID:24671799


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  CHEBI ontology 19880
    role 19850
      biological role 19848
        antigen 130
          S. flexneri serotype 5a O-polysaccharide (O factor 9-positive) 0
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Term Annotations click to browse term
  CHEBI ontology 19880
    subatomic particle 19878
      composite particle 19878
        hadron 19878
          baryon 19878
            nucleon 19878
              atomic nucleus 19878
                atom 19878
                  main group element atom 19817
                    p-block element atom 19817
                      carbon group element atom 19757
                        carbon atom 19754
                          organic molecular entity 19754
                            heteroorganic entity 19512
                              organochalcogen compound 19275
                                organooxygen compound 19191
                                  carbohydrates and carbohydrate derivatives 15289
                                    carbohydrate 15289
                                      polysaccharide 8220
                                        polysaccharide derivative 5130
                                          S. flexneri serotype 5a O-polysaccharide (O factor 9-positive) 0
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