CHEBI:78704 - S. flexneri serotype 1b O-polysaccharide (O factor 9-positive)

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ChEBI Name S. flexneri serotype 1b O-polysaccharide (O factor 9-positive)
ChEBI ID CHEBI:78704
ChEBI ASCII Name S. flexneri serotype 1b O-polysaccharide (O factor 9-positive)
Definition A polysaccharide derivative comprised of a [2)-α-L-RhapIII-(1→2)-α-L-RhapII-(1→3)-α-L-RhapI-(1→3)-β-D-GlcpNAc-(1→] tetrasaccharide repeat modified by the (1→4) linkage of an α-D-glucosyl group to the GlcNAc residue and by addition of acetyl groups to O-2 of 80% of the RhaI residues and to either O-3 or O-4 of many of the RhaIII residues (70% to O-3; 15% to O-4). The structure provided is representative of that in Shigella flexneri serotype 1b and shows the most common repeating unit.
Stars This entity has been manually annotated by the ChEBI Team.
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Formula (C36H57NO24)nH2O
Net Charge 0
Roles Classification
Biological Role(s): antigen
Any substance that stimulates an immune response in the body, such as through antibody production or by presentation to a T-cell receptor after binding to a major histocompability complex (MHC).
View more via ChEBI Ontology
ChEBI Ontology
Outgoing S. flexneri serotype 1b O-polysaccharide (O factor 9-positive) (CHEBI:78704) has role antigen (CHEBI:59132)
S. flexneri serotype 1b O-polysaccharide (O factor 9-positive) (CHEBI:78704) is a polysaccharide derivative (CHEBI:65212)
Synonyms Sources
[2)-α-L-RhaIII3/4Ac-(1→2)-α-L-RhaII-(1→3)-α-L-RhaI2Ac-(1→3)-[α-D-Glc-(1→4)]-β-D-GlcNAc-(1→]n ChEBI
[2)-α-L-RhapIII3/4Ac-(1→2)-α-L-RhapII-(1→3)-α-L-RhapI2Ac-(1→3)-[α-D-Glcp-(1→4)]-β-D-GlcpNAc-(1→]n ChEBI
Citations Waiting for Citations Types Sources
19246033 PubMed citation Europe PMC
22724405 PubMed citation Europe PMC
24671799 PubMed citation Europe PMC
Last Modified
06 June 2014
General Comment
2014-06-04 The antigenic determinant provisionally named group O factor 9 is described in PMID:24671799.