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 ID1610
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 antibodiesA patient suffering from IgM lambda monoclonal gammopathy
Carrier NameNil
Conjugation MethodNil
AntibodiesMab NOV
Antibody type and classIgM
Assay SystemOuchterlony Gel Diffusion, ELISA, invivo protection assays
Cross-reactivityThis Mab reacted with group B meningococcal and E. coli K1 capsular polysaccharides and did not react with a(2 --> 9)-linked poly-N-acetylneuraminic acid, the capsular polysaccharide of the group C meningococcus, nor with the capsular polysaccharide of E. coli K92 or K100. It also crossreacts with polynucleotides and denatured DNA
Proposed epitopesThe epitope was proposed to consist of α(2-->8)-linked poly-N-acetylneuraminic acid
IEDB EpitopeN/A
Proposed UtilityThis Mab is protective against E. coli in newborn rats
Curator IDAA + AS
Date of Curation22-09-2010
ReferencesPMC2188242


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