Abstract

The Epstein-Barr nuclear antigen 1 (EBNA1) protein of Epstein-Barr virus (EBV) is expressed in both latent and lytic modes of EBV infection and contributes to EBV-associated cancers. Using a proteomics approach, we profiled EBNA1-host protein interactions in nasopharyngeal and gastric carcinoma cells in the context of latent and lytic EBV infection. We identified several interactions that occur in both modes of infection, including a previously unreported interaction with nucleophosmin and RNA-mediated interactions with several heterogeneous ribonucleoproteins (hnRNPs) and La protein.

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