Journal
JOURNAL OF VIROLOGY
Volume 80, Issue 19, Pages 9905-9909Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/JVI.01004-06
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Funding
- NCI NIH HHS [R01 CA085164] Funding Source: Medline
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The lytic origins of DNA replication for human herpesvirus 8 (HHV8), oriLyt-L and oriLyt-R, are located between open reading frames K4.2 and K5 and ORF69 and vFLIP, respectively. These lytic origins were elucidated using a transient replication assay. Although this assay is a powerful tool for identifying many herpesvirus lytic origins, it is limited in its ability to evaluate the activity of replication origins in the context of the viral genome. To this end, we investigated the ability of a recombinant HHV8 bacterial artificial chromosome (BAC) to replicate in the absence of oriLyt-R, oriLyt-L, or both oriLyt regions. We generated the HRV8 BAC recombinants (BAC36-Delta Ori-R, BAC36-Delta Ori-L, and BAC36-Delta Ori-RL), which removed one or all of the identified lytic origins. An evaluation of these recombinant BACs revealed that oriLyt-L was sufficient to propagate the viral genome, whereas oriLyt-R alone failed to direct the amplification of viral DNA.
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