Proteins Specified by Bovine Herpesvirus Type 4: Structural Proteins of the Virion and Identification of Two Major Glycoproteins by Using Monoclonal Antibodies

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Abstract
Bovine herpesvirus type 4 proteins were identified by PAGE of [35S]methionine- or [3H]glucosamine-labelled purified virions. Thirty-one monoclonal antibodies (MAbs) raised against the V. Test strain were used to identify 29 proteins, ten of which were glycosylated. All of these glycoproteins belonged to the viral envelope and a 140K non-glycosylated protein appeared to be the major nucleocapsid protein. The MAbs were classified into two groups. The first group precipitated three glycoproteins of Mr 150K, 120K and 51K. The 120K and 51K glycoproteins were linked by disulphide bonds and the 150K glycoprotein was linked to the others by non-covalent bonds. The second group precipitated a different 120K glycoprotein.