Epitope mapping of cross-reactive monoclonal antibodies specific for the influenza A virus PA and PB2 polypeptides
Identifieur interne : 000A17 ( Istex/Curation ); précédent : 000A16; suivant : 000A18Epitope mapping of cross-reactive monoclonal antibodies specific for the influenza A virus PA and PB2 polypeptides
Auteurs : M. Ochoa [Espagne] ; J. Bárcena [Espagne] ; S. De La Luna [Espagne] ; J. A. Melero [Espagne] ; A. R. Douglas [Royaume-Uni] ; A. Nieto [Espagne] ; J. Ortín [Espagne] ; J. J. Skehel [Royaume-Uni] ; A. Portela [Espagne]Source :
- Virus Research [ 0168-1702 ] ; 1995.
English descriptors
- Teeft :
- Amino, Amino acids, Antibody, Antigenic, Antigenic areas, Assay, Competitive elisas, Elisa, Epitope, Influenza, Influenza virus, Influenza viruses, Mabs, Molecular weights, Monoclonal, Monoclonal antibodies, Ochoa, Plasmid, Polymerase, Polypeptide, Protein fragments, Protein regions, Syncytial virus, Viral, Viral strains, Virol, Virology, Virus, Virus research.
Abstract
Abstract: Characterization of the epitopes recognized by 21 monoclonal antibodies (MAbs) specific for the influenza A virus PA (13 MAbs) and PB2 (8 MAbs) polypeptides (Bárcena et al. (1994) J. Virol. 68, 6900–6909) raised against denatured polypeptides produced in E. coli is described. MAbs were characterized by: (1) competitive binding ELISAs; (2) mapping of the protein regions that specify their binding sites; and (3) analyses of their ability to recognize the corresponding viral protein in a number of viral isolates. Five and three nondashoverlapping antigenic areas were defined by the anti-PA and anti-PB2 MAbs, respectively. Five of the anti-PA MAbs recognized antigenic determinants located within the amino-terminal 157 amino acids of the PA protein, and 6 others reacted strongly with a PA fragment comprising the first 236 amino acids. All 8 anti-PB2 antibodies reacted strongly with a polypeptide fragment containing amino acids 1–113 of the PB2 protein. Analyses of the reactivities of 4 anti-P antibodies with 23 influenza A virus reference strains isolated over a period of 61 years and recovered from humans, pigs, birds and horses, showed that the epitopes were conserved among all viral isolates. The application of these antibodies as research and diagnostic tools is discussed.
Url:
DOI: 10.1016/0168-1702(95)00039-S
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<term>Antigenic areas</term>
<term>Assay</term>
<term>Competitive elisas</term>
<term>Elisa</term>
<term>Epitope</term>
<term>Influenza</term>
<term>Influenza virus</term>
<term>Influenza viruses</term>
<term>Mabs</term>
<term>Molecular weights</term>
<term>Monoclonal</term>
<term>Monoclonal antibodies</term>
<term>Ochoa</term>
<term>Plasmid</term>
<term>Polymerase</term>
<term>Polypeptide</term>
<term>Protein fragments</term>
<term>Protein regions</term>
<term>Syncytial virus</term>
<term>Viral</term>
<term>Viral strains</term>
<term>Virol</term>
<term>Virology</term>
<term>Virus</term>
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<front><div type="abstract" xml:lang="en">Abstract: Characterization of the epitopes recognized by 21 monoclonal antibodies (MAbs) specific for the influenza A virus PA (13 MAbs) and PB2 (8 MAbs) polypeptides (Bárcena et al. (1994) J. Virol. 68, 6900–6909) raised against denatured polypeptides produced in E. coli is described. MAbs were characterized by: (1) competitive binding ELISAs; (2) mapping of the protein regions that specify their binding sites; and (3) analyses of their ability to recognize the corresponding viral protein in a number of viral isolates. Five and three nondashoverlapping antigenic areas were defined by the anti-PA and anti-PB2 MAbs, respectively. Five of the anti-PA MAbs recognized antigenic determinants located within the amino-terminal 157 amino acids of the PA protein, and 6 others reacted strongly with a PA fragment comprising the first 236 amino acids. All 8 anti-PB2 antibodies reacted strongly with a polypeptide fragment containing amino acids 1–113 of the PB2 protein. Analyses of the reactivities of 4 anti-P antibodies with 23 influenza A virus reference strains isolated over a period of 61 years and recovered from humans, pigs, birds and horses, showed that the epitopes were conserved among all viral isolates. The application of these antibodies as research and diagnostic tools is discussed.</div>
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