Expression cloning and antigenic analysis of the nucleocapsid protein of equine arteritis virus.

Abstract:

:A series of recombinant fusion proteins derived from equine arteritis virus (EAV) open reading frame (ORF) 7 have been used to define the immunoreactive region of the viral nucleocapsid (N) protein. Reactivities of recombinant N fusion proteins with post-infection equine sera in immunoblots and ELISAs indicate that the major nucleocapsid protein epitope is located within amino acid residues 1-69. In ELISAs two recombinant nucleocapsid fusion proteins containing residues 1-69 (rN1-69) and 1-28 (rN1-28) discriminated between pre- and post-infection, and pre- and post-vaccination serum samples. Additionally rN1-69 and rN1-28 detected seroconversions following vaccination with a killed virus preparation, even in the absence of a detectable virus neutralising response. Although a good correlation existed between virus neutralising antibody and rN1-69 ELISA positive values in post-infection sera, all the rN proteins failed to induce any virus neutralising response in immunised rabbits.

journal_name

Virus Res

journal_title

Virus research

authors

Chirnside ED,Francis PM,Mumford JA

doi

10.1016/0168-1702(95)00098-4

subject

Has Abstract

pub_date

1995-12-01 00:00:00

pages

277-88

issue

2-3

eissn

0168-1702

issn

1872-7492

pii

0168-1702(95)00098-4

journal_volume

39

pub_type

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