Expression and antigenicity of recombinant vaccine candidates carrying the
foot-and-mouth disease virus (FMDV) type O VP1 GH loop epitope. (A) SDS-PAGE analysis:
Lane 1, total lysate of glutathione S-transferase; lane 2, soluble fraction of
glutathione S-transferase (GST); lane 3, total lysate of GST-VP1; lane 4, soluble
fraction of GST-VP1. (B) Western blot analysis with monoclonal antibody against type O
FMDV: Lane 1, purified GST; lane 2, purified GST-VP1. (C) SDS-PAGE analysis: Lane 1,
total lysate of recombinant glycoprotein fused to FMDV epitope; lane 2, soluble fraction
of recombinant fused to FMDV epitope. The arrow indicates the band corresponding to the
vesicular stomatitis virus glycoprotein-VP1. (D) Western blot analysis: Lane 1, total
lysate of the vesicular stomatitis virus (VSV) GP-VP1 with monoclonal antibody against
type O FMDV; lane 2, total lysate of the VSV GP-VP1 with monoclonal antibody against VSV
glycoprotein. (E) Antigenicity of the VSV GP-VP1, GST-VP1, and GST control.