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 - 4

Entry No. - 1   [TOP]
PolysacDB ID1617
Carbohydrate NameLipooligosaccharide   (Drugpedia)
Carbohydrate ClassLipopolysaccharide
MicrobeMoraxella catarrhalis serotype A   (NCBI Taxonomy)   (Drugpedia)
Basic StructureLOS consists of an oligosaccharide and lipid A and is similar to the lipopolysaccharide (LPS) of gramnegative enteric pathogens, but it lacks the O-antigenic side chain of repeating units characteristic of classical LPS. The oligosaccharide part consists of the following residues : α-D-Galp-(1-->4)-β-D-Galp-(1-->4)-α-D-Glcp-(1-->2)-β-D-Glcp-(1-->6)-α-D-Glcp [branched to α-D-GlcpNAc-(1-->2)-β-D-Glcp-(1-->4)] and [branched to β-D-Glcp-(1-->3)] -(1-->5)-Kdo
BCSDB Structure22728
Proposed functionsMoracella lipooligosaccharide is a potential virulence factor
Antigenic Nature used to produce antibodiesWhole cells
Carrier NameNil
Conjugation MethodNil
AntibodiesPolysera
Antibody type and classN/A
Assay SystemELISA and immunoblotting
Cross-reactivityThis antisera was specific to serotype A
Proposed epitopesA terminal α-D-GlcNAc-(1-->2)-β-D-Glc seemed to be a part of the epitope
IEDB EpitopeN/A
Proposed UtilityThis antisera may help in sertotyping of moraxella strains
Curator IDAA + AS
Date of Curation23-09-2010
References8636949


Entry No. - 2   [TOP]
PolysacDB ID1624
Carbohydrate NameLipooligosaccharide   (Drugpedia)
Carbohydrate ClassLipopolysaccharide
MicrobeMoraxella catarrhalis serotype A   (NCBI Taxonomy)   (Drugpedia)
Basic StructureLOS consists of an oligosaccharide and lipid A and is similar to the lipopolysaccharide (LPS) of gramnegative enteric pathogens, but it lacks the O-antigenic side chain of repeating units characteristic of classical LPS. The oligosaccharide part consists of the following residues : α-D-Galp-(1-->4)-β-D-Galp-(1-->4)-α-D-Glcp-(1-->2)-β-D-Glcp-(1-->6)-α-D-Glcp [branched to α-D-GlcpNAc-(1-->2)-β-D-Glcp-(1-->4)] and [branched to β-D-Glcp-(1-->3)] -(1-->5)-Kdo
BCSDB Structure22728
Proposed functionsMoracella lipooligosaccharide is a potential virulence factor
Antigenic Nature used to produce antibodiesHeat inactivated Moraxella catarrhalis serotype A
Carrier NameNil
Conjugation MethodNil
AntibodiesMab 219A9
Antibody type and classIgM
Assay SystemELISA, bactericidal assays and immunofluorescence assay
Cross-reactivityMAb 219A9 was specific for a common epitope of A, B, and C M. catarrhalis serotypes. It also cross-reacted with whole bacteria and LPS antigens isolated from non-typeable H. influenzae and H. parainfluenzae strains
Proposed epitopes6-linked branch α-D-Galpara-(1-->4)-β-D-Galpara-(1-->4)-α-D-Glcpara-(1-->2)-β-D-lcpara seemed to be a part of the epitope
IEDB EpitopeN/A
Proposed UtilityThis Mab possessed a strong bactericidal effect against the three serotypes in the presence of complement
Curator IDAA + AS
Date of Curation25-09-2010
References17211546


Entry No. - 3   [TOP]
PolysacDB ID1625
Carbohydrate NameLipooligosaccharide   (Drugpedia)
Carbohydrate ClassLipopolysaccharide
MicrobeMoraxella catarrhalis serotype A   (NCBI Taxonomy)   (Drugpedia)
Basic StructureLOS consists of an oligosaccharide and lipid A and is similar to the lipopolysaccharide (LPS) of gramnegative enteric pathogens, but it lacks the O-antigenic side chain of repeating units characteristic of classical LPS. The oligosaccharide part consists of the following residues : α-D-Galp-(1-->4)-β-D-Galp-(1-->4)-α-D-Glcp-(1-->2)-β-D-Glcp-(1-->6)-α-D-Glcp [branched to α-D-GlcpNAc-(1-->2)-β-D-Glcp-(1-->4)] and [branched to β-D-Glcp-(1-->3)] -(1-->5)-Kdo
BCSDB Structure22728
Proposed functionsMoracella lipooligosaccharide is a potential virulence factor
Antigenic Nature used to produce antibodiesHeat inactivated Moraxella catarrhalis serotype A
Carrier NameNil
Conjugation MethodNil
AntibodiesMab 218A8
Antibody type and classIgG3
Assay SystemELISA, bactericidal assays and immunofluorescence assay
Cross-reactivityMab 218A8 reacted with two serotypes A and C
Proposed epitopesN/A
IEDB EpitopeN/A
Proposed UtilityThis Mab could be useful for the detection of M. catarrhalis and its LOS antigen in clinical samples
Curator IDAA + AS
Date of Curation25-09-2010
References17211546


Entry No. - 4   [TOP]
PolysacDB ID1626
Carbohydrate NameLipooligosaccharide   (Drugpedia)
Carbohydrate ClassLipopolysaccharide
MicrobeMoraxella catarrhalis serotype A   (NCBI Taxonomy)   (Drugpedia)
Basic StructureLOS consists of an oligosaccharide and lipid A and is similar to the lipopolysaccharide (LPS) of gramnegative enteric pathogens, but it lacks the O-antigenic side chain of repeating units characteristic of classical LPS. The oligosaccharide part consists of the following residues : α-D-Galp-(1-->4)-β-D-Galp-(1-->4)-α-D-Glcp-(1-->2)-β-D-Glcp-(1-->6)-α-D-Glcp [branched to α-D-GlcpNAc-(1-->2)-β-D-Glcp-(1-->4)] and [branched to β-D-Glcp-(1-->3)] -(1-->5)-Kdo
BCSDB Structure22728
Proposed functionsMoracella lipooligosaccharide is a potential virulence factor
Antigenic Nature used to produce antibodiesHeat inactivated Moraxella catarrhalis serotype A
Carrier NameNil
Conjugation MethodNil
AntibodiesMab 217H4
Antibody type and classIgG3
Assay SystemELISA, bactericidal assays and immunofluorescence assay
Cross-reactivityThis Mab was specific to serotype A
Proposed epitopesN/A
IEDB EpitopeN/A
Proposed UtilityThis Mab could be useful for the detection of M. catarrhalis and its LOS antigen in clinical samples
Curator IDAA + AS
Date of Curation25-09-2010
References17211546


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