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 ID1578
Carbohydrate NameN-propionylated group B meningococcal polysaccharide   (Drugpedia)
Carbohydrate ClassCapsular polysaccharide
Microbe NameNeisseria meningitidis Serogroup B   (NCBI Taxonomy)   (Drugpedia)
Basic StructureIt is a homopolymer of α(2-->8) sialic acid
BCSDB StructureN/A
Proposed FunctionThis 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 NatureGlycoconjugates
Carrier NameTetanus toxoid
Conjugate MethodNil
AntibodiesPolysera
Antibody Type ClassN/A
Assay SystemRadioactive binding inhibition assay, ELISA, Bactericidal assay
Cross ReactivityThis antisera cross-reacted with capsular polysaccharide of E. coli K1
Proposed EpitopeN/A
IEDB EpitopeN/A
Proposed UtilityThis antisera was bactericidal for Group B meningococci
Curator IDAA + AS
Date of Curation12-09-2010
References2469720

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PolysacDB ID1789
Carbohydrate NameN-propionylated group B meningococcal polysaccharide   (Drugpedia)
Carbohydrate ClassCapsular polysaccharide
Microbe NameNeisseria meningitidis   (NCBI Taxonomy)   (Drugpedia)
Basic StructureIt consists of a homopolymer of α(2-->8)-linked sialic acid residues
BCSDB StructureN/A
Proposed FunctionIt is an important virulence factor
Antigenic NatureGlycoconjugates
Carrier NameTetanus toxoid
Conjugate MethodN-propionylated group B meningococcal polysaccharide was combined with freshly purified monomeric tetanus toxoid in a solution of phosphate buffer containing NaBH3CN and incubated at 37°C for 5 days
AntibodiesMab 13A8
Antibody Type ClassIgG1
Assay SystemELISA, bactericidal assays
Cross ReactivityN/A
Proposed EpitopeThe epitope was located only on extended helical segments of the polysaccharide
IEDB EpitopeN/A
Proposed UtilityThis Mab would help in the elucidation of the capsular polysaccharide structure
Curator IDAA + AS
Date of Curation01-11-2010
ReferencesPMC2196336

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PolysacDB ID1790
Carbohydrate NameN-propionylated group B meningococcal polysaccharide   (Drugpedia)
Carbohydrate ClassCapsular polysaccharide
Microbe NameNeisseria meningitidis   (NCBI Taxonomy)   (Drugpedia)
Basic StructureIt consists of a homopolymer of α(2-->8)-linked sialic acid residues
BCSDB StructureN/A
Proposed FunctionIt is an important virulence factor
Antigenic NatureGlycoconjugates
Carrier NameTetanus toxoid
Conjugate MethodN-propionylated group B meningococcal polysaccharide was combined with freshly purified monomeric tetanus toxoid in a solution of phosphate buffer containing NaBH3CN and incubated at 37°C for 5 days
AntibodiesMab 6E10
Antibody Type ClassIgG1
Assay SystemELISA, bactericidal assays
Cross ReactivityN/A
Proposed EpitopeThe epitope was located only on extended helical segments of the polysaccharide
IEDB EpitopeN/A
Proposed UtilityThis Mab would help in the elucidation of the capsular polysaccharide structure
Curator IDAA + AS
Date of Curation01-11-2010
ReferencesPMC2196336

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PolysacDB ID1791
Carbohydrate NameN-propionylated group B meningococcal polysaccharide   (Drugpedia)
Carbohydrate ClassCapsular polysaccharide
Microbe NameNeisseria meningitidis   (NCBI Taxonomy)   (Drugpedia)
Basic StructureIt consists of a homopolymer of α(2-->8)-linked sialic acid residues
BCSDB StructureN/A
Proposed FunctionIt is an important virulence factor
Antigenic NatureGlycoconjugates
Carrier NameTetanus toxoid
Conjugate MethodN-propionylated group B meningococcal polysaccharide was combined with freshly purified monomeric tetanus toxoid in a solution of phosphate buffer containing NaBH3CN and incubated at 37°C for 5 days
AntibodiesMab 13A11
Antibody Type ClassIgG1
Assay SystemELISA, bactericidal assays
Cross ReactivityN/A
Proposed EpitopeThe epitope was located only on extended helical segments of the polysaccharide
IEDB EpitopeN/A
Proposed UtilityThis Mab would help in the elucidation of the capsular polysaccharide structure
Curator IDAA + AS
Date of Curation02-11-2010
ReferencesPMC2196336

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PolysacDB ID1792
Carbohydrate NameN-propionylated group B meningococcal polysaccharide   (Drugpedia)
Carbohydrate ClassCapsular polysaccharide
Microbe NameNeisseria meningitidis   (NCBI Taxonomy)   (Drugpedia)
Basic StructureIt consists of a homopolymer of α(2-->8)-linked sialic acid residues
BCSDB StructureN/A
Proposed FunctionIt is an important virulence factor
Antigenic NatureGlycoconjugates
Carrier NameTetanus toxoid
Conjugate MethodN-propionylated group B meningococcal polysaccharide was combined with freshly purified monomeric tetanus toxoid in a solution of phosphate buffer containing NaBH3CN and incubated at 37°C for 5 days
AntibodiesMab 13D9
Antibody Type ClassIgG2a
Assay SystemELISA, bactericidal assays
Cross ReactivityN/A
Proposed EpitopeThe epitope was located only on extended helical segments of the polysaccharide
IEDB EpitopeN/A
Proposed UtilityThis Mab had bactericidal activity
Curator IDAA + AS
Date of Curation02-11-2010
ReferencesPMC2196336

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PolysacDB ID1793
Carbohydrate NameN-propionylated group B meningococcal polysaccharide   (Drugpedia)
Carbohydrate ClassCapsular polysaccharide
Microbe NameNeisseria meningitidis   (NCBI Taxonomy)   (Drugpedia)
Basic StructureIt consists of a homopolymer of α(2-->8)-linked sialic acid residues
BCSDB StructureN/A
Proposed FunctionIt is an important virulence factor
Antigenic NatureGlycoconjugates
Carrier NameTetanus toxoid
Conjugate MethodN-propionylated group B meningococcal polysaccharide was combined with freshly purified monomeric tetanus toxoid in a solution of phosphate buffer containing NaBH3CN and incubated at 37°C for 5 days
AntibodiesMab 6B9
Antibody Type ClassIgG2a
Assay SystemELISA, bactericidal assays
Cross ReactivityN/A
Proposed EpitopeThe epitope was located only on extended helical segments of the polysaccharide and also comprised short internal fragments
IEDB EpitopeN/A
Proposed UtilityThis Mab would help in the elucidation of the capsular polysaccharide structure
Curator IDAA + AS
Date of Curation02-11-2010
ReferencesPMC2196336

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PolysacDB ID1794
Carbohydrate NameN-propionylated group B meningococcal polysaccharide   (Drugpedia)
Carbohydrate ClassCapsular polysaccharide
Microbe NameNeisseria meningitidis   (NCBI Taxonomy)   (Drugpedia)
Basic StructureIt consists of a homopolymer of α(2-->8)-linked sialic acid residues
BCSDB StructureN/A
Proposed FunctionIt is an important virulence factor
Antigenic NatureGlycoconjugates
Carrier NameTetanus toxoid
Conjugate MethodN-propionylated group B meningococcal polysaccharide was combined with freshly purified monomeric tetanus toxoid in a solution of phosphate buffer containing NaBH3CN and incubated at 37°C for 5 days
AntibodiesMab 12C5
Antibody Type ClassIgG2b
Assay SystemELISA, bactericidal assays
Cross ReactivityN/A
Proposed EpitopeThe epitope was located only on extended helical segments of the polysaccharide
IEDB EpitopeN/A
Proposed UtilityThis Mab had bactericidal activity
Curator IDAA + AS
Date of Curation02-11-2010
ReferencesPMC2196336

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PolysacDB ID1795
Carbohydrate NameN-propionylated group B meningococcal polysaccharide   (Drugpedia)
Carbohydrate ClassCapsular polysaccharide
Microbe NameNeisseria meningitidis   (NCBI Taxonomy)   (Drugpedia)
Basic StructureIt consists of a homopolymer of α(2-->8)-linked sialic acid residues
BCSDB StructureN/A
Proposed FunctionIt is an important virulence factor
Antigenic NatureGlycoconjugates
Carrier NameTetanus toxoid
Conjugate MethodN-propionylated group B meningococcal polysaccharide was combined with freshly purified monomeric tetanus toxoid in a solution of phosphate buffer containing NaBH3CN and incubated at 37°C for 5 days
AntibodiesMab 12E12
Antibody Type ClassIgG3
Assay SystemELISA, bactericidal assays
Cross ReactivityN/A
Proposed EpitopeThe epitope was located only on extended helical segments of the polysaccharide
IEDB EpitopeN/A
Proposed UtilityThis Mab had bactericidal activity
Curator IDAA + AS
Date of Curation02-11-2010
ReferencesPMC2196336

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PolysacDB ID1796
Carbohydrate NameN-propionylated group B meningococcal polysaccharide   (Drugpedia)
Carbohydrate ClassCapsular polysaccharide
Microbe NameNeisseria meningitidis   (NCBI Taxonomy)   (Drugpedia)
Basic StructureIt consists of a homopolymer of α(2-->8)-linked sialic acid residues
BCSDB StructureN/A
Proposed FunctionIt is an important virulence factor
Antigenic NatureGlycoconjugates
Carrier NameTetanus toxoid
Conjugate MethodN-propionylated group B meningococcal polysaccharide was combined with freshly purified monomeric tetanus toxoid in a solution of phosphate buffer containing NaBH3CN and incubated at 37°C for 5 days
AntibodiesMab 14F10
Antibody Type ClassIgG3
Assay SystemELISA, bactericidal assays
Cross ReactivityN/A
Proposed EpitopeThe epitope was located only on extended helical segments of the polysaccharide
IEDB EpitopeN/A
Proposed UtilityThis Mab had bactericidal activity
Curator IDAA + AS
Date of Curation03-11-2010
ReferencesPMC2196336

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