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 ID1038
Carbohydrate NameLipopolysaccharide   (Drugpedia)
Carbohydrate ClassLipopolysaccharide
MicrobeRhizobium leguminosarum   (NCBI Taxonomy)   (Drugpedia)
Basic StructureLPS is composed of three parts: (1) lipid A, (2) core polysaccharide, and (3) O antigen. The lipid A region contains two glucosamine sugar derivatives, each with three fatty acids and phosphate or pyrophosphate attached. The core polysaccharide has KDO and attached to lipid A. The side chain O is small polysaccharide chain extending outward from the core, it has several peculiar sugars and varies in composition between bacterial strains.
BCSDB Structure1686
Proposed functionsLPS is most unusual constituents of outer membrane. It plays important role in host defence avoidance. LPS contributes to the negative charge of the bacterial surface. Lipid A is often toxic and act as endotoxin
Antigenic Nature used to produce antibodiesMixture of suspension of cell envelop.
Carrier NameNil
Conjugation MethodNil
AntibodiesMab 3
Antibody type and classN\A
Assay SystemWestern blotting, spot imunoassays, agglutination tests
Cross-reactivityThis antibody was cross-reactive with different strains of R.leguminosarum like R.biovars viciae, trifolli and phaseoli.
Proposed epitopesN/A
IEDB EpitopeN/A
Proposed UtilityN\A
Curator IDAA + AS
Date of Curation10-01-2010
ReferencesPMC209711


Entry No. - 2   [TOP]
PolysacDB ID2598
Carbohydrate NameUnknown glycoprotein   (Drugpedia)
Carbohydrate ClassGlycoprotein
MicrobeRhizobium leguminosarum   (NCBI Taxonomy)   (Drugpedia)
Basic StructureN/A
BCSDB StructureN/A
Proposed functionsN/A
Antigenic Nature used to produce antibodiesPeribacteroid material
Carrier NameNil
Conjugation MethodNil
AntibodiesMab AFRC MAC 63
Antibody type and classN/A
Assay SystemImmunoelectron microscopy
Cross-reactivityThis Mab cross-reacts with the peribacteroid membrane from Pisum sativum, plant plasma membranes and the Golgi bodies, but not the endoplasmic reticulum. This Mab also reacted with peribacteroid membranes from nodules of Vicia and lupin, and with plasma membranes and Golgi membranes from uninfected plant cells, including root tip cells from onion (Allium cepa), indicating that the antigen is highly conserved in the plasma membranes of plant cells
Proposed epitopesN/A
IEDB EpitopeN/A
Proposed UtilityThis Mab should prove useful in characterising the maturation and exchange of material between the Golgi apparatus and the plasma membrane of plant cells in general, quite apart from any specific applications as an immunochemical marker for the peribacteroid membrane in further studies on the Rhizobium-legume interaction
Curator IDAA + AS
Date of Curation14-07-2011
ReferencesPMC554232


Entry No. - 3   [TOP]
PolysacDB ID2599
Carbohydrate NameUnknown glycoprotein   (Drugpedia)
Carbohydrate ClassGlycoprotein
MicrobeRhizobium leguminosarum   (NCBI Taxonomy)   (Drugpedia)
Basic StructureN/A
BCSDB StructureN/A
Proposed functionsN/A
Antigenic Nature used to produce antibodiesPeribacteroid material
Carrier NameNil
Conjugation MethodNil
AntibodiesMab AFRC MAC 64
Antibody type and classN/A
Assay SystemImmunoelectron microscopy
Cross-reactivityThis Mab cross-reacts with the peribacteroid membrane from Pisum sativum, plant plasma membranes and the Golgi bodies, but not the endoplasmic reticulum. This Mab also reacted with peribacteroid membranes from nodules of Vicia and lupin, and with plasma membranes and Golgi membranes from uninfected plant cells, including root tip cells from onion (Allium cepa), indicating that the antigen is highly conserved in the plasma membranes of plant cells
Proposed epitopesN/A
IEDB EpitopeN/A
Proposed UtilityThis Mab should prove useful in characterising the maturation and exchange of material between the Golgi apparatus and the plasma membrane of plant cells in general, quite apart from any specific applications as an immunochemical marker for the peribacteroid membrane in further studies on the Rhizobium-legume interaction
Curator IDAA + AS
Date of Curation15-07-2011
ReferencesPMC554232


Entry No. - 4   [TOP]
PolysacDB ID2600
Carbohydrate NameUnknown glycoprotein   (Drugpedia)
Carbohydrate ClassGlycoprotein
MicrobeRhizobium leguminosarum   (NCBI Taxonomy)   (Drugpedia)
Basic StructureN/A
BCSDB StructureN/A
Proposed functionsN/A
Antigenic Nature used to produce antibodiesPeribacteroid material
Carrier NameNil
Conjugation MethodNil
AntibodiesMab AFRC MAC 65
Antibody type and classN/A
Assay SystemImmunoelectron microscopy
Cross-reactivityThis Mab cross-reacts with the peribacteroid membrane from Pisum sativum, plant plasma membranes and the Golgi bodies, but not the endoplasmic reticulum. This Mab also reacted with peribacteroid membranes from nodules of Vicia and lupin, and with plasma membranes and Golgi membranes from uninfected plant cells, including root tip cells from onion (Allium cepa), indicating that the antigen is highly conserved in the plasma membranes of plant cells
Proposed epitopesN/A
IEDB EpitopeN/A
Proposed UtilityThis Mab should prove useful in characterising the maturation and exchange of material between the Golgi apparatus and the plasma membrane of plant cells in general, quite apart from any specific applications as an immunochemical marker for the peribacteroid membrane in further studies on the Rhizobium-legume interaction
Curator IDAA + AS
Date of Curation15-07-2011
ReferencesPMC554232


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