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 ID1606
Carbohydrate NameN-propionyl substituted Neisseria meningitidis group B capsular polysaccharide    (Drugpedia)
Carbohydrate ClassCapsular polysaccharide
MicrobeNeisseria meningitidis Serogroup B   (NCBI Taxonomy)   (Drugpedia)
Basic StructureIt is a homopolymer of α(2-->8) sialic acid
BCSDB StructureN/A
Proposed functionsThis capsular polysaccharide is an important virulence determinant. Serum antibodies to the group B polysaccharide confers protection against disease by activating complement-mediated bacteriolysis and/or opsonization. It leads to immunologic tolerance induced by prenatal exposure to host polysialyated glycoproteins
Antigenic Nature used to produce antibodiesGlycoconjugates
Carrier NameTetanus toxoid
Conjugation MethodThe oligosaccharide-protein conjugate was prepared by stirring a mixture of terminal aldehyde-containing N-Pr meningococcal B oligosaccharide with tetanus toxoid in 0.75 M potassium phosphate buffer, pH 9.0, with sodium cyanoborohydride (40 mg/ml) for 1 day at 40°C, then 2 days at ambient temperature
AntibodiesMab Seam 4
Antibody type and classIgG1
Assay SystemELISA, flow cytometry and indirect immunofluorescence
Cross-reactivityThis Mab did not cross-react with non-modified acetylaed group B capsular polysaccharide
Proposed epitopesN/A
IEDB EpitopeN/A
Proposed UtilityThis Mab may be useful for the identification of molecular mimetics capable of eliciting protective antibodies specific to the bacteria, without the risk of evoking autoimmune disease
Curator IDAA + AS
Date of Curation22-09-2010
References9590252


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