PolysacDB: A comprehensive database of microbial polysaccharide antigens and their antibodies

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Citation: Aithal A, Sharma A, Joshi S, Raghava GPS, Varshney GC (2012) PolysacDB: A Database of Microbial Polysaccharide Antigens and Their Antibodies. PLoS ONE 7(4): e34613. doi:10.1371/journal.pone.0034613
Total Entries - 1

Entry No. - 1   [TOP]
PolysacDB ID2314
Carbohydrate NameLipopolysaccharide   (Drugpedia)
Carbohydrate ClassLipopolysaccharide
MicrobeShigella flexneri serotype 2b   (NCBI Taxonomy)   (Drugpedia)
Basic StructureChemically, the O-antigen is a polysaccharide chain of variable length, built up by repetitive sequences of tetra- to hexasaccharides. It consists of a basic tetrasaccharide repeating unit consisting of three rhamnoses and one N-acetylglucosamine was common to all S. flexneri strains (except serotype 17): -2)-α-L-Rhap-[branched to α-D-Glcp(1-->4)](1-->2)-α-L-Rhap-(1-->3)-α-L-Rhap-[branched to α-D-Glcp(1-->3)](1-->3)-β-D-GlcpNAc-(1-->
BCSDB Structure108645
Proposed functionsLPS plays an important virulence role based on its antiphagocytic and endotoxic properties
Antigenic Nature used to produce antibodiesHeat killed cells
Carrier NameNil
Conjugation MethodNil
AntibodiesMab MASF(7,8)-l
Antibody type and classIgG3
Assay SystemELISA, agglutination tests
Cross-reactivityThis Mab showed excellent specificity for the 7,8 antigenic determinant [S. flexneri serotypes 2b, 3a, 5b, and X]
Proposed epitopesThis Mab apparently interact with the α-D-glucose p(1-->4)-α-L-rhamnosyl pIII epitope
IEDB Epitope76657
Proposed UtilityThis Mab can be used for detection and identification of shigella flexneri species
Curator IDAA + AS
Date of Curation30-03-2011
ReferencesPMC272864


Department of Computational Biology, Indraprastha Institute of Information Technology, Sec - 39A, New Delhi, India - 110020