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A novel Epstein-Barr virus glycoprotein gp150 expressed from the BDLF3 open reading frame
M G Kurilla1, T Heineman, L C Davenport
1Department of Pathology, University of Virginia Health Sciences Center, Charlottesville 22908, USA.
Abstract:
Analysis of cDNAs mapping to the BamHI D fragment of the Epstein-Barr virus (EBV) genome indicates that the BDLF3 open reading frame, which is predicted to encode a type 1 membrane protein of 234 amino acids, is expressed as an unspliced message. Expression of the open reading frame as a recombinant protein in vaccinia virus reveals a glycoprotein that has both N- and O-linked sugars. Antibodies made to the recombinant protein immunoprecipitate a late glycoprotein with a mobility of approximately 150,000 Da from EBV-producing cells. The glycoprotein is associated with the virion. Antibodies to it appear to react primarily with carbohydrate and do not demonstrate neutralizing activity.