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 ID1386
Carbohydrate NameLipopolysaccharide   (Drugpedia)
Carbohydrate ClassLipopolysaccharide
MicrobeEscherichia coli J5   (NCBI Taxonomy)   (Drugpedia)
Basic StructureN/A
BCSDB StructureN/A
Proposed functionsN/A
Antigenic Nature used to produce antibodiesHeat-inactivated E. coli J5 Bacterial cells
Carrier NameNil
Conjugation MethodNil
AntibodiesMab 8A1
Antibody type and classIgG1
Assay SystemELISA, immunoblotting and RIA
Cross-reactivityThis antibody cross-reacted with E. coli J5, E. Coli O111:B4, S. minnesota R595, K. pneumoniae and P. Aeruginosa but did not cross-react with Staphylococcus aureus, S. marcescens and Staphylococcus faecalis
Proposed epitopesN/A
IEDB EpitopeN/A
Proposed UtilityN/A
Curator IDAA + AS
Date of Curation05-07-2010
ReferencesPMC260436


Entry No. - 2   [TOP]
PolysacDB ID2397
Carbohydrate NameLipoteichoic acids (LTAs)   (Drugpedia)
Carbohydrate ClassGlycolipid
MicrobeStreptococcus mutans BHT   (NCBI Taxonomy)   (Drugpedia)
Basic StructureLTAs are amphiphiles composed of a membrane lipid or glycolipid which is covalently linked to a linear chain of 15 to 30 polyglycerophosphate (PGP) units
BCSDB StructureN/A
Proposed functionsLipoteichoic acids (LTAs) are present on the surfaces of a majority of gram-positive bacteria and have been shown to constitute 1 to 2% of the dry weight of several organisms
Antigenic Nature used to produce antibodiesEthylene oxide killed cells
Carrier NameNil
Conjugation MethodNil
AntibodiesMab 8A1
Antibody type and classIgM
Assay SystemHaemagglutination
Cross-reactivityThis Mab cross-reacted with LTA from L.casei 6375 but was relatively less efficient in its ability to interact with the LTAs of L. fermentum and S. faecium
Proposed epitopesGlycerophosphate-glycerophosphateglycerol residue backbone seemed to be an important part of the epitope
IEDB EpitopeN/A
Proposed UtilityThese highly specific reagents [Mabs] should prove useful not only for affinity purification of LTAs but also for experiments designed to define the putative role(s) of LTAs in biological processes
Curator IDAA + AS
Date of Curation30-04-2011
ReferencesPMC264251


Bioinformatics Centre, Institute of Microbial Technology, Sec - 39A, Chandigarh, India - 160036