Journal
JOURNAL OF VIROLOGY
Volume 80, Issue 10, Pages 5078-5081Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/JVI.80.10.5078-5081.2006
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The Epstein-Barr virus (EBV) BMRF1 protein is a DNA polymerase processivity factor. We have deleted the BMRF1 open reading frame from the EBV genome and assessed the Delta BMRF1 EBV phenotype. Delta BMRF1 viruses were replication deficient, but the wild-type phenotype could be restored by BMRF1 trans-complementation. The replication-deficient phenotype included impaired lytic DNA replication and late protein expression. Delta BMRF1 and wild-type viruses were undistinguishable in terms of their ability to transform primary B cells. Our results provide genetic evidence that BMRF1 is essential for lytic replication of the EBV genome.
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