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• W2146751104 endingPage "11625" @default.
• W2146751104 startingPage "11619" @default.
• W2146751104 abstract "The major structural glycoprotein E2 of classical swine fever virus (CSFV) is responsible for eliciting neutralizing antibodies and conferring protective immunity. The current structural model of this protein predicts its surface-exposed region at the N terminus with a short stretch of the C-terminal residues spanning the membrane envelope. In this study, the N-terminal region of 221 amino acids (aa) covering aa 690 to 910 of the CSFV strain Alfort/187 E2, expressed as a fusion product in Escherichia coli, was shown to contain the epitope recognized by a monoclonal antibody (WH303) with affinity for various CSFV strains but not for the other members of the Pestivirus genus, bovine viral diarrhea virus (BVDV) and border disease virus (BDV). This region also contains the sites recognized by polyclonal immunoglobulin G (IgG) antibodies of a pig hyperimmune serum. Serial deletions of this region precisely defined the epitope recognized by WH303 to be TAVSPTTLR (aa 829 to 837) of E2. Comparison of the sequences around the WH303-binding site among the E2 proteins of pestiviruses indicated that the sequence TAVSPTTLR is strongly conserved in CSFV strains but highly divergent among BVDV and BDV strains. These results provided a structural basis for the reactivity patterns of WH303 and also useful information for the design of a peptide containing this epitope for potential use in the detection and identification of CSFV. By deletion analysis, an antigenic domain capable of reacting with pig polyclonal IgG was found 17 aa from the WH303 epitope within the N-terminal 123 residues (aa 690 to 812). Small N- or C-terminal deletions introduced into the domain disrupt its reactivity with pig polyclonal IgG, suggesting that this is the minimal antigenic domain required for binding to pig antibodies. This domain could have eliminated or reduced the cross-reactivity with other pestiviruses and may thus have an application for the serological detection of CSFV infection; evaluation of this is now possible, since the domain has been expressed in E. coli in large amounts and purified to homogeneity by chromatographic methods." @default.
• W2146751104 created "2016-06-24" @default.
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• W2146751104 date "2000-12-15" @default.
• W2146751104 modified "2023-10-16" @default.
• W2146751104 title "Deletions of Structural Glycoprotein E2 of Classical Swine Fever Virus Strain Alfort/187 Resolve a Linear Epitope of Monoclonal Antibody WH303 and the Minimal N-Terminal Domain Essential for Binding Immunoglobulin G Antibodies of a Pig Hyperimmune Serum" @default.
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• W2146751104 doi "https://doi.org/10.1128/jvi.74.24.11619-11625.2000" @default.
• W2146751104 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/112443" @default.
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