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 - 2

Entry No. - 1   [TOP]
PolysacDB ID1044
Carbohydrate NameGalactomannan   (Drugpedia)
Carbohydrate ClassCapsular polysaccharide
MicrobeAspergillus fumigatus   (NCBI Taxonomy)   (Drugpedia)
Basic StructureGalactomannan is composed of a branched core containing α(1-->2)- and α(1-->6)-linked mannose, with β(1-->5)galactofuranose and/or β(1-->4)galactopyranose moieties linked linearly in side chains terminated by galactofuranose nonreducing end units
BCSDB StructureN/A
Proposed functionsGalactomannan is a major cell wall component in Aspergillusspecies and can also be secreted into the medium as a component of the exoantigen. The galactomannan is immunogenic and polyclonal antibodies against it have been used in antigen detection for the diagnosis of invasive aspergillosis, and in the detection of fungal contamination in foodstuffs
Antigenic Nature used to produce antibodiesCold alkali extract of mycelium
Carrier NameN/A
Conjugation MethodN/A
AntibodiesMab 1
Antibody type and classIgM
Assay SystemIndirect Enzyme Immunoassay, immunofluorescence, Preciptin assay
Cross-reactivityThis antibody was cross-reactive with C.albicans
Proposed epitopesOligogalactoside side chain
IEDB EpitopeN/A
Proposed UtilityThis antibody can be used to detect circulating antigen in the serum of patients with invasive aspergillosis by ELISA inhibition.
Curator IDAA + AS
Date of Curation13-01-2010
ReferencesPMC258783


Entry No. - 2   [TOP]
PolysacDB ID1482
Carbohydrate NameUnknown carbohydrate   (Drugpedia)
Carbohydrate ClassGlycoprotein
MicrobeHistoplasma capsulatum   (NCBI Taxonomy)   (Drugpedia)
Basic StructureN/A
BCSDB StructureN/A
Proposed functionsN/A
Antigenic Nature used to produce antibodiesDisrupted yeast cell homogenate of Histoplasma capsulatum
Carrier NameNil
Conjugation MethodNil
AntibodiesMab 1
Antibody type and classIgG2b
Assay SystemELISA, immunoblotting and Solid-phase radioimmunoassay
Cross-reactivityThis Mab cross-reacted with H. capsulatum and Blastomyces dermatitidis
Proposed epitopesN/A
IEDB EpitopeN/A
Proposed UtilityMAbs may prove useful in the development of more specific immunodiagnostic tests for histoplasmosis
Curator IDAA + AS
Date of Curation30-07-2010
ReferencesPMC313195


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