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 ID1327
Carbohydrate NameUnknown carbohydrate   (Drugpedia)
Carbohydrate ClassGlycoprotein
MicrobeCandida albicans B311   (NCBI Taxonomy)   (Drugpedia)
Basic StructureN/A
BCSDB StructureN/A
Proposed functionsN/A
Antigenic Nature used to produce antibodiesWhole cells
Carrier NameNil
Conjugation MethodNil
AntibodiesMab 5B2
Antibody type and classIgM
Assay SystemELISA, immunofluorescence, crossed immunoelectrophoresis
Cross-reactivityThis antibody cross-reacted with 5 strains of Candida albicans and also cross-reacted with Candida tropicalis and Candida stellatoidia but did not cross-react with T. glabrata and S. cerevisiae
Proposed epitopesN/A
IEDB EpitopeN/A
Proposed UtilityThis Mab can be used to isolate surface components and determine the chemical structures that are responsible for the immunological differences. This Mab would facilitate the development of serological assays
Curator IDAA + AS
Date of Curation13-06-2010
ReferencesPMC259333


Entry No. - 2   [TOP]
PolysacDB ID1342
Carbohydrate NamePhosphopeptidomannan   (Drugpedia)
Carbohydrate ClassGlycoprotein
MicrobeCandida albicans   (NCBI Taxonomy)   (Drugpedia)
Basic StructureN/A
BCSDB StructureN/A
Proposed functionsN/A
Antigenic Nature used to produce antibodiesWhole cells
Carrier NameNil
Conjugation MethodNil
AntibodiesMab 5B2
Antibody type and classN/A
Assay SystemELISA, immunoblotting
Cross-reactivityN/A
Proposed epitopesThe epitope consists of mannopyranosyl units bound through β(1-->2) linkages present both within the oligomannoside H pool and at the nonreducing end of some oligomannosides A
IEDB EpitopeN/A
Proposed UtilityThis Mab helped in epitope elucidation of the mannans present on Candidial surfaces
Curator IDAA + AS
Date of Curation23-06-2010
ReferencesPMC257398


Entry No. - 3   [TOP]
PolysacDB ID1344
Carbohydrate NameUnknown carbohydrate   (Drugpedia)
Carbohydrate ClassGlycoprotein
MicrobeCandida albicans   (NCBI Taxonomy)   (Drugpedia)
Basic StructureN/A
BCSDB StructureN/A
Proposed functionsN/A
Antigenic Nature used to produce antibodiesLive C. albicans blastoconidia
Carrier NameNil
Conjugation MethodNil
AntibodiesMab 5B2
Antibody type and classIgM
Assay SystemImmunofluorescence and precipitin reactions
Cross-reactivityThis Mab reacted with C. albicans, C. tropic alis, C. glabr-ata, and C. Giiillierrnondii
Proposed epitopesN/A
IEDB EpitopeN/A
Proposed UtilityThis Mab had the ability to agglutinate Candida species
Curator IDAA + AS
Date of Curation24-06-2010
ReferencesPMC260140


Entry No. - 4   [TOP]
PolysacDB ID2180
Carbohydrate NameO-polysaccharide   (Drugpedia)
Carbohydrate ClassLipopolysaccharide
MicrobeSalmonella typhimurium   (NCBI Taxonomy)   (Drugpedia)
Basic StructureLPS is a complex macromolecule composed of the biologically active lipid A moiety, covalently attached core oligosaccharide, and distally linked polysaccharide O-side chain. The O-antigen part consists of the following residues : -2)-α-D-Manp [branched to α-Abep-(1-->3)] -(1-->4)-α-L-Rhap-(1-->3)-α-D-Galp-(1-
BCSDB Structure6380
Proposed functionsLPS plays an important virulence role based on its antiphagocytic and endotoxic properties
Antigenic Nature used to produce antibodiesWhole cells
Carrier NameNil
Conjugation MethodNil
AntibodiesMab 5B2
Antibody type and classIgM
Assay SystemELISA, immunoblotting, dot blot assay, immunoelectron microscopy
Cross-reactivityThis Mab reacted with S. typhimurium (LPS O:1, 4, 5, and 12) while failing to recognize S. typhimurium var. copenhagen (LPS O:1, 4, and 12). It reacted equally with live and heat-attenuated Salmonella B serovars containing LPS O-5 antigen
Proposed epitopesN/A
IEDB EpitopeN/A
Proposed UtilityThis Mab can be used to discriminate between S. typhimurium and S. typhimurium var. copenhagen
Curator IDAA + AS
Date of Curation23-02-2011
ReferencesPMC167767


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