The only domain which distinguishes Epstein-Barr virus latent membrane protein 2A (LMP2A) from LMP2B is dispensable for lymphocyte infection and growth transformation in vitro; LMP2A is therefore nonessential.

Abstract excerpt

Using second-site homologous recombination, Epstein-Barr virus (EBV) recombinants were constructed which carry an LMP2A mutation terminating translation at codon 19. Despite the absence of LMP2A or LMP2A cross-reactive protein, the recombinants were able to initiate and maintain primary B-lymphocyte growth transformation in vitro. EBNA1, EBNA2, and LMP1 expression was unaffected by the LMP2A mutation. The LMP2A...

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