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
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PolysacDB ID1091
Carbohydrate NameInner core Lipopolysaccharide   (Drugpedia)
Carbohydrate ClassLipopolysaccharide
Microbe NameEscherichia coli F653   (NCBI Taxonomy)   (Drugpedia)
Basic StructureIt consists of the uncommon sugars L-glycero-D mannoheptose (Hep) and 3-deoxy-D-manno-octulosonic acid (Kdo) along with Lipid A
BCSDB StructureN/A
Proposed FunctionN/A
Antigenic NatureHeat killed bacteria
Carrier NameNil
Conjugate MethodNil
AntibodiesMab WN1 222-5
Antibody Type ClassIgG2a
Assay SystemELISA, immunoblotting, passive hemolysis assay
Cross ReactivityWN1 222-5 binds to all E. coli clinical isolates tested so far (79 blood isolates, 80 urinary isolates, and 21 fecal isolates), Salmonella LPS, Shigella LPS and to some Citrobacter, Enterobacter, and KiebsieUla isolates
Proposed EpitopeThe epitope consists of the inner core
IEDB Epitope76794
Proposed UtilityIn vitro, this Mab inhibits the Limulus amoebocyte lysate assay activity of S-form and R-form LPS in a dose-dependent manner and it neutralizes the LPS-induced release of clinically relevant monokines (interleukin 6 and tumor necrosis factor). In vivo, WN1 222-5 blocks endotoxin-induced pyrogenicity in rabbits and lethality in galactosamine-sensitized mice
Curator IDAA + AS
Date of Curation27-01-2010
ReferencesPMC281087

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