Expression of a hepatitis E virus (HEV)-trpE fusion protein containing epitopes recognized by antibodies in sera from human cases and experimentally infected primates

Arch Virol. 1992;123(3-4):335-49. doi: 10.1007/BF01317268.


A 1700 base cDNA fragment coding for the putative structural gene(s) of hepatitis E virus (HEV) was inserted into the pATH 10 expression vector. The fusion protein (C2) expressed by this plasmid was found to contain epitopes recognized by anti-HEV antibodies. C2 protein was used in a Western blot format to examine its usefulness in detecting anti-HEV antibodies in well documented human cases of HEV and non-human primates infected with HEV. Both IgM and IgG anti-HEV could be detected in our Western blot assay. This Western blot assay was found not to detect antibodies from acute-phase sera from patients with either HAV or HBV. The C2 protein contains broadly cross-reactive epitopes, and the Western blot assay was able to detect anti-HEV antibodies in patient sera from Asia, Africa, and North America. The optimum serum dilution for the detection of both IgM and IgG was 1:25.

MeSH terms

  • Animals
  • Antigens, Viral / immunology*
  • Blotting, Western
  • Cloning, Molecular
  • Electrophoresis, Polyacrylamide Gel
  • Epitopes / immunology*
  • Fluorescent Antibody Technique
  • Hepatitis Antibodies / blood*
  • Hepatitis E / immunology*
  • Hepatitis E / microbiology
  • Hepatitis E virus / immunology*
  • Humans
  • Macaca fascicularis
  • Pan troglodytes
  • Recombinant Fusion Proteins / immunology*


  • Antigens, Viral
  • Epitopes
  • Hepatitis Antibodies
  • Recombinant Fusion Proteins