PolysacDB: A comprehensive database of microbial polysaccharide antigens and their antibodies

Home | Search | Advance Search | Browse | Online Submission | Documentation & FAQ | Team | Contact us

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 - 5

Entry No. - 1   [TOP]
PolysacDB ID2318
Carbohydrate NameCore oligosaccharide   (Drugpedia)
Carbohydrate ClassLipopolysaccharide
MicrobeShigella flexneri serotype 1b   (NCBI Taxonomy)   (Drugpedia)
Basic StructureThe core is a single sequence of heptoses and hexoses
BCSDB StructureN/A
Proposed functionsLPS plays an important virulence role based on its antiphagocytic and endotoxic properties
Antigenic Nature used to produce antibodiesHeat killed cells
Carrier NameNil
Conjugation MethodNil
AntibodiesMab MASF R3 core-1
Antibody type and classIgG2a
Assay SystemImmunoblotting, enzyme-linked immunosorbent assay (ELISA), hemagglutination, and coagglutination
Cross-reactivityThe core-specific antibodies were shown to be specific for the Escherichia coli R3 core, which all S. flexneri LPSs were found to have, except for S. flexneri serotype 6 LPS
Proposed epitopesN/A
IEDB EpitopeN/A
Proposed UtilityThis Mab can be used for detection and identification of shigella flexneri species
Curator IDAA + AS
Date of Curation31-03-2011
References2424839


Entry No. - 2   [TOP]
PolysacDB ID2319
Carbohydrate NameO-polysaccharide   (Drugpedia)
Carbohydrate ClassLipopolysaccharide
MicrobeShigella flexneri serotype 1b   (NCBI Taxonomy)   (Drugpedia)
Basic StructureChemically, the O-antigen is a polysaccharide chain of variable length, built up by repetitive sequences of tetra- to hexasaccharides. It consists of a basic tetrasaccharide repeating unit consisting of three rhamnoses and one N-acetylglucosamine was common to all S. flexneri strains (except serotype 17): -2)-α-L-Rhap-(1-->2)-α-L-Rhap-(1-->3)-α-L-Rhap-(1-->3)-β[branched to α-D-Glcp(1-->4)]-D-GlcpNAc-(1-->
BCSDB Structure108641
Proposed functionsLPS plays an important virulence role based on its antiphagocytic and endotoxic properties
Antigenic Nature used to produce antibodiesHeat killed cells
Carrier NameNil
Conjugation MethodNil
AntibodiesMab MASF I
Antibody type and classIgG1
Assay SystemImmunoblotting, enzyme-linked immunosorbent assay (ELISA), hemagglutination, and coagglutination
Cross-reactivityThe type I O antigen-specific antibodies were shown to bind exclusively to S. flexneri serotypes la and lb in ELISA
Proposed epitopesThe α-D-Glcp-(1-->4)-β-D-GlcpNAc disaccharide in the repeating unit of the O-antigen is the immunodominant region to which these antibodies bind
IEDB Epitope76664
Proposed UtilityThis Mab can be used for detection and identification of shigella flexneri species
Curator IDAA + AS
Date of Curation01-04-2011
References2424839


Entry No. - 3   [TOP]
PolysacDB ID2320
Carbohydrate NameO-polysaccharide   (Drugpedia)
Carbohydrate ClassLipopolysaccharide
MicrobeShigella flexneri serotype 1b   (NCBI Taxonomy)   (Drugpedia)
Basic StructureChemically, the O-antigen is a polysaccharide chain of variable length, built up by repetitive sequences of tetra- to hexasaccharides. It consists of a basic tetrasaccharide repeating unit consisting of three rhamnoses and one N-acetylglucosamine was common to all S. flexneri strains (except serotype 17): -2)-α-L-Rhap-(1-->2)-α-L-Rhap-(1-->3)-α-L-Rhap-(1-->3)-β[branched to α-D-Glcp(1-->4)]-D-GlcpNAc-(1-->
BCSDB Structure108641
Proposed functionsLPS plays an important virulence role based on its antiphagocytic and endotoxic properties
Antigenic Nature used to produce antibodiesHeat killed cells
Carrier NameNil
Conjugation MethodNil
AntibodiesMab MASF 111:6,7,8
Antibody type and classN/A
Assay SystemImmunoblotting, enzyme-linked immunosorbent assay (ELISA), hemagglutination, and coagglutination
Cross-reactivityThe type 111:6,7,8 O-antigen-specific antibodies were specific for S. flexneri serotype 3a
Proposed epitopesThese antibodies seemed to require the simultaneous presence of all three antigens for binding i.e. type III antigen and the group 6 and 7,8 antigens
IEDB Epitope76664
Proposed UtilityThis Mab can be used for detection and identification of shigella flexneri species
Curator IDAA + AS
Date of Curation01-04-2011
References2424839


Entry No. - 4   [TOP]
PolysacDB ID2321
Carbohydrate NameO-polysaccharide   (Drugpedia)
Carbohydrate ClassLipopolysaccharide
MicrobeShigella flexneri serotype 1b   (NCBI Taxonomy)   (Drugpedia)
Basic StructureChemically, the O-antigen is a polysaccharide chain of variable length, built up by repetitive sequences of tetra- to hexasaccharides. It consists of a basic tetrasaccharide repeating unit consisting of three rhamnoses and one N-acetylglucosamine was common to all S. flexneri strains (except serotype 17): -2)-α-L-Rhap-(1-->2)-α-L-Rhap-(1-->3)-α-L-Rhap-(1-->3)-β[branched to α-D-Glcp(1-->4)]-D-GlcpNAc-(1-->
BCSDB Structure108641
Proposed functionsLPS plays an important virulence role based on its antiphagocytic and endotoxic properties
Antigenic Nature used to produce antibodiesHeat killed cells
Carrier NameNil
Conjugation MethodNil
AntibodiesMab MASF 6-1
Antibody type and classIgG1
Assay SystemImmunoblotting, enzyme-linked immunosorbent assay (ELISA), hemagglutination, and coagglutination
Cross-reactivityThis Mab bound to LPSs of S. flexneri serotypes lb, 3a, 3b, and 4b
Proposed epitopesThese LPSs have one antigenic determinant i.e group 6 antigen. It is therefore likely that the structure responsible for binding is the O-acetyl group on C-2 of rhamnose III
IEDB Epitope76664
Proposed UtilityThis Mab can be used for detection and identification of shigella flexneri species
Curator IDAA + AS
Date of Curation01-04-2011
References2424839


Entry No. - 5   [TOP]
PolysacDB ID2322
Carbohydrate NameO-polysaccharide   (Drugpedia)
Carbohydrate ClassLipopolysaccharide
MicrobeShigella flexneri serotype 1b   (NCBI Taxonomy)   (Drugpedia)
Basic StructureChemically, the O-antigen is a polysaccharide chain of variable length, built up by repetitive sequences of tetra- to hexasaccharides. It consists of a basic tetrasaccharide repeating unit consisting of three rhamnoses and one N-acetylglucosamine was common to all S. flexneri strains (except serotype 17): -2)-α-L-Rhap-(1-->2)-α-L-Rhap-(1-->3)-α-L-Rhap-(1-->3)-β[branched to α-D-Glcp(1-->4)]-D-GlcpNAc-(1-->
BCSDB Structure108641
Proposed functionsLPS plays an important virulence role based on its antiphagocytic and endotoxic properties
Antigenic Nature used to produce antibodiesHeat killed cells
Carrier NameNil
Conjugation MethodNil
AntibodiesMab MASF 6-2
Antibody type and classIgG1
Assay SystemImmunoblotting, enzyme-linked immunosorbent assay (ELISA), hemagglutination, and coagglutination
Cross-reactivityThis Mab bound to LPSs of S. flexneri serotypes lb, 3a, 3b, and 4b
Proposed epitopesThese LPSs have one antigenic determinant i.e group 6 antigen. It is therefore likely that the structure responsible for binding is the O-acetyl group on C-2 of rhamnose III
IEDB Epitope76664
Proposed UtilityThis Mab can be used for detection and identification of shigella flexneri species
Curator IDAA + AS
Date of Curation02-04-2011
References2424839


Department of Computational Biology, Indraprastha Institute of Information Technology, Sec - 39A, New Delhi, India - 110020