Abstract
A mouse monoclonal antibody, LP4D3, was raised against purified Epstein-Barr virus nuclear antigen leader protein (EBNA-LP) fused to glutathione-S-transferase. The antibody detected endogenous and exogenous EBNA-LP in immunoblotting, immunofluorescence and immunoprecipitation assays, and the epitope of the antibody was mapped in the W2 domain of EBNA-LP. While another monoclonal antibody to EBNA-LP, JF186, which is widely used for analyses of the viral protein, did not react with truncated forms of EBNA-LP expressed in P3HR1 cells, as reported earlier, the LP4D3 antibody did. The LP4D3 antibody will be a useful tool for further studies of EBNA-LP, especially investigations into the phenotypes of mutant EBNA-LP expressed in P3HR1 cells.
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