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Residues 136-159 of VPI of foot and mouth disease virus (FMDV) comprise the G-H loop of the protein and form a prominent feature on the surface of virus particles. This sequence contains an immunodominant neutralizing epitope, which can be mimicked with synthetic peptides, and includes an Arg, Gly, Asp motif which has been implicated in the binding of the virus to cellular receptors. Crystallographic analysis of native virus particles failed to resolve the structure of this region due to its disordered state. However, reduction of a disulphide bond between cysteine residues 134 of VP1 and 130 of VP2 caused the G-H loop to collapse onto the surface of the virus particle and allowed its conformation to be determined.


Conference paper

Publication Date





51 - 58


Amino Acid Sequence, Antigens, Viral, Aphthovirus, Capsid, Capsid Proteins, Immunodominant Epitopes, Models, Molecular, Molecular Sequence Data, Oxidation-Reduction, Serotyping