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 ID1135
Carbohydrate NameGalactomannan   (Drugpedia)
Carbohydrate ClassCapsular polysaccharide
MicrobeAspergillus flavus EV 701   (NCBI Taxonomy)   (Drugpedia)
Basic StructureGalactomannans are composed of an α-1,6-linked mannan backbone substituted with mannopyranose oligosaccharides and immunodominant terminal galactofuranose present either singly or linked to oligogalactosides
BCSDB StructureN/A
Proposed functionsThe wide distribution and similar chemical structure of the galactomannans have been responsible for serologic cross-reactions
Antigenic Nature used to produce antibodiesA mycelial extract of A. flavus EV 701
Carrier NameNil
Conjugation MethodNil
AntibodiesMab EBA-7
Antibody type and classIgM
Assay SystemELISA, Immunofluorescence and immunoblotting
Cross-reactivityThis Mab cross-reacted with the five Aspergillus species (A. fumigatus ATCC 1028, A. flavus ATCC 10124, A. niger ATCC 10549, A. versicolor ATCC 16845, and A. terreus CBS 106.25) but not with other medically important fungi, such as Sporothrix schenckii ATCC 14096 and Candida spp. (25 strains, including 10 ATCC strains, 2 CBS strains, and 13 clinical isolates, representing seven species, i.e., C. albicans, C. tropicalis, C. [Torulopsis] glabrata, C. pseudotropicalis, C. parapsilosis, C. guilliennondii, and C. krusei). They also failed to react with the 15 different bacterial species tested
Proposed epitopesAn epitope located on the β(1-->5) galactofuranose containing side chains of the galactomannan molecule
IEDB EpitopeN/A
Proposed UtilityThis rat Mab can be used against A. fumigatus galactomannan, already applied to the serological and immunohistological diagnosis of invasive aspergillosis
Curator IDAA + AS
Date of Curation12-02-2010
ReferencesPMC257149


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