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- W2149290622 abstract "The genetic elements of herpesvirus origins of lytic replication have been characterized in detail; however, much remains to be elucidated concerning their functional role in replication initiation. In the case of the Epstein-Barr virus (EBV), we have found that in addition to the two well-defined critical elements required for lytic replication (the upstream and downstream essential elements, UEE and DEE), the origin of lytic replication (OriLyt) also requires the presence of a GC-rich RNA in cis. The BHLF1 transcript is similar to the essential K5 transcript identified at the Kaposi's sarcoma-associated herpesvirus OriLyt. We have found that truncation of the BHLF1 transcript or deletion of the TATA box, but not the putative ATG initiation codon, reduce OriLyt function to background levels. By using an antibody specific for RNA-DNA hybrid molecules, we found the BHLF1 RNA stably annealed to its DNA template during the early steps of lytic reactivation. Furthermore, expression of human RNase H1, which degrades RNA in RNA-DNA hybrids, drastically reduces OriLyt-dependent DNA replication as well as recruitment of the viral single-stranded DNA binding protein BALF2 to OriLyt. These studies suggest that a GC-rich OriLyt transcript is an important component of gammaherpesvirus lytic origins and is required for initial strand separation and loading of core replication proteins." @default.
- W2149290622 created "2016-06-24" @default.
- W2149290622 creator A5048608610 @default.
- W2149290622 creator A5064696395 @default.
- W2149290622 date "2011-03-15" @default.
- W2149290622 modified "2023-10-13" @default.
- W2149290622 title "Initiation of Epstein-Barr Virus Lytic Replication Requires Transcription and the Formation of a Stable RNA-DNA Hybrid Molecule at OriLyt" @default.
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- W2149290622 doi "https://doi.org/10.1128/jvi.02175-10" @default.
- W2149290622 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3067963" @default.
- W2149290622 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/21191028" @default.
- W2149290622 hasPublicationYear "2011" @default.
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