title: Mapping of linear epitopes on fibre knob of human adenovirus serotype 5.
abstract: Linear antigenic epitopes on the Ad5 fibre knob (FK5) were characterised with fibre- and virion-specific antisera, using 15-mer overlapping peptides covering the knob of the fibre. They were compared with epitopes on the Ad2 fibre knob (FK2) domain. The stronger reactive FK5 epitopes were represented by peptides P3 (amino acids (aa A419-L433)), P6 (aa S449-E463), P7 (aa I459-L473), P12 (aa G509-N523), P14 (aa P529-G543) and P16 (aa A549-Y563). P3 spans the B beta-strand and the left portion of the C beta-strand, P6 and P7 the D beta-strand and the adjacent parts of the CD and DE loops, P12, P14 and P16 the G, H and I beta strands and the adjacent parts of the loops, respectively. The stronger reactive epitopes on FK2 were located in P2 (aa P409-L423), P6 (aa T449-Q463), P8 (aa E469-G483), P13 (aa Q519-T533) and P16 (aa S549-K563). The positions of FK5 and FK2 derived peptides, representing epitopes, are either identical or overlapping or adjacent, as determined by amino acid sequence alignment. Antisera obtained against several longer peptides showed virus neutralising capacity, indicating neutralising epitopes in these peptides.
authors.affiliation: Friedrich Loeffler Institute for Medical Microbiology, Ernst Moritz Arndt University, D-17487, Greifswald, Germany. varicula@t-online.de
authors.forename: H
authors.initials: H
authors.lastname: Liebermann
authors.forename: K
authors.initials: K
authors.lastname: Lotz
authors.forename: R
authors.initials: R
authors.lastname: Mentel
authors.forename: U
authors.initials: U
authors.lastname: Bauer
authors.forename: W
authors.initials: W
authors.lastname: Seidel
mesh_terms: D000258:Adenovirus Infections, Human / Q000276:immunology; D000260:Adenoviruses, Human / Q000276:immunology*; D000595:Amino Acid Sequence; D000914:Antibodies, Viral / Q000276:immunology; D000956:Antigens, Viral / Q000276:immunology; D002213:Capsid / Q000737:chemistry / Q000235:genetics / Q000276:immunology*; D036022:Capsid Proteins; D004797:Enzyme-Linked Immunosorbent Assay; D018604:Epitope Mapping; D006801:Humans; D007106:Immune Sera; D015151:Immunoblotting; D008969:Molecular Sequence Data; D009500:Neutralization Tests; D010455:Peptides / Q000138:chemical synthesis / Q000737:chemistry / Q000276:immunology; D012703:Serotyping
chemical_list: D000914:Antibodies, Viral; D000956:Antigens, Viral; D036022:Capsid Proteins; D007106:Immune Sera; D010455:Peptides; C018315:hexon capsid protein, Adenovirus