CHEBI:62992 - S. flexneri serotype 5b O-specific polysaccharide

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ChEBI Name S. flexneri serotype 5b O-specific polysaccharide
ChEBI ID CHEBI:62992
ChEBI ASCII Name S. flexneri serotype 5b O-specific polysaccharide
Definition A polysaccharide derivative antigen composed of a backbone of repeating α-D-Glc-(1→3)-α-L-Rha-(1→2)-[α-D-Glc-(1→3)]-α-L-Rha-(1→3)-α-L-Rha-(1→3)-β-D-GlcNAc units that are connected via β-(1→2)-linkages between the GlcNAc and the Rha residue adjacent to the first Glc.
Stars This entity has been manually annotated by the ChEBI Team.
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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).
Related Structures
S. flexneri serotype 5b O-specific polysaccharide is a Structural Derivative of
polysaccharide
Definition : A biomacromolecule consisting of large numbers of monosaccharide residues linked glycosidically. This term is commonly used only for those containing more than ten monosaccharide residues.
 carbohydrate
Definition : Any member of the class of organooxygen compounds that is a polyhydroxy-aldehyde or -ketone or a lactol resulting from their intramolecular condensation (monosaccharides); substances derived from these by reduction of the carbonyl group (alditols), by oxidation of one or more hydroxy groups to afford the corresponding aldehydes, ketones, or carboxylic acids, or by replacement of one or more hydroxy group(s) by a hydrogen atom; and polymeric products arising by intermolecular acetal formation between two or more such molecules (disaccharides, polysaccharides and oligosaccharides). Carbohydrates contain only carbon, hydrogen and oxygen atoms; prior to any oxidation or reduction, most have the empirical formula Cm(H2O)n. Compounds obtained from carbohydrates by substitution, etc., are known as carbohydrate derivatives and may contain other elements. Cyclitols are generally not regarded as carbohydrates.
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