title: Kinetic analysis of synthetic analogues of linear-epitope peptides of glycoprotein D of herpes simplex virus type 1 by surface plasmon resonance.
abstract: The interaction between mAb A16 and glycoprotein D (gD) of herpes simplex virus type 1 was analyzed by studying the kinetics of binding with a surface-plasmon-resonance biosensor. mAb A16 belongs to group VII antibodies, which recognize residues 11-19 of gD. In a previous study, three critical residues, Asp13, Arg16 and Phe17, of this epitope were identified by screening a phage display library that contained a random 15-amino-acid insert with the antibody. The contribution to binding of these residues in the motif DXXRF was further analyzed by an amino-acid-replacement study of the epitope gD-(9-19)-peptide and of a gD-(9-19)-peptide mimotope, previously obtained by screening the phage display library. Amino acid residues of the motif were replaced by a neutral amino acid residue, an amino acid residue with opposite charge and a corresponding D-amino acid residue. Kinetic parameters of peptide analogues were determined with a surface plasmon-resonance biosensor. The kinetic parameters of the peptide analogues were compared with the kinetic parameters of the interaction between mAb A16 and the epitope gD-(9-19)-peptide. The minimal size of the gD epitope for mAb A16 was also determined in this study. The kinetic constants of the resulting gD-(11-17)-peptide were found to be similar to those of entire gD. The kinetic analysis precisely defined the epitope on gD for mAb A16 to residues 11-17, identified Arg16 as an essential residue and suggested that Asp13 and Phe17 are mainly involved in stabilization of the secondary structure of the peptide.
authors.affiliation: Department of Medical Microbiology, University of Groningen, The Netherlands.
authors.forename: E
authors.initials: E
authors.lastname: Lasonder
authors.forename: G A
authors.initials: GA
authors.lastname: Schellekens
authors.forename: D G
authors.initials: DG
authors.lastname: Koedijk
authors.forename: R A
authors.initials: RA
authors.lastname: Damhof
authors.forename: S
authors.initials: S
authors.lastname: Welling-Wester
authors.forename: M
authors.initials: M
authors.lastname: Feijlbrief
authors.forename: A J
authors.initials: AJ
authors.lastname: Scheffer
authors.forename: G W
authors.initials: GW
authors.lastname: Welling
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D000911:Antibodies, Monoclonal; D000936:Antigen-Antibody Complex; D002460:Cell Line; D003001:Cloning, Molecular; D000939:Epitopes / Q000737:chemistry; D007700:Kinetics; D009682:Magnetic Resonance Spectroscopy; D016297:Mutagenesis, Site-Directed; D010446:Peptide Fragments / Q000138:chemical synthesis / Q000737:chemistry; D011994:Recombinant Proteins / Q000737:chemistry / Q000276:immunology; D018139:Simplexvirus; D018411:Spodoptera; D014162:Transfection; D014759:Viral Envelope Proteins / Q000737:chemistry* / Q000276:immunology
chemical_list: D000911:Antibodies, Monoclonal; D000936:Antigen-Antibody Complex; D000939:Epitopes; D010446:Peptide Fragments; D011994:Recombinant Proteins; D014759:Viral Envelope Proteins; C064959:glycoprotein I, herpes simplex virus type 1