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| Content Provider | PubMed Central |
|---|---|
| Author | Xu, Yiyang Cei, Sylvia A. Huete, Alicia Rodriguez Pari, Gregory S. |
| Copyright Year | 2004 |
| Abstract | Human cytomegalovirus (HCMV) UL84 is required for oriLyt-dependent DNA replication, and evidence from transient transfection assays suggests that UL84 directly participates in DNA synthesis. In addition, because of its apparent interaction with IE2, UL84 is implicated as a possible regulatory protein. To address the role of UL84 in the context of the viral genome, we generated a recombinant HCMV bacterial artificial chromosome (BAC) construct that did not express the UL84 gene product. This construct, BAC-IN84/Ep, displayed a null phenotype in that it failed to produce infectious virus after transfection into human fibroblast cells, whereas a revertant virus readily produced viral plaques and, subsequently, infectious virus. Real-time quantitative PCR showed that BAC-IN84/Ep was defective for DNA synthesis in that no increase in the accumulation of viral DNA was observed in transfected cells. We were unable to complement BAC-IN84/Ep in trans; however, oriLyt-dependent DNA replication was observed by the cotransfection of UL84 and BAC-IN84/Ep. An analysis of viral mRNA by real-time PCR indicated that, even in the absence of DNA synthesis, all representative kinetic classes of genes were expressed in cells transfected with BAC-IN84/Ep. The detection of UL44 and IE2 by immunofluorescence in BAC-IN84/Ep-transfected cells showed that these proteins failed to partition into replication compartments, indicating that UL84 expression is essential for the formation of these proteins into replication centers within the context of the viral genome. These results show that UL84 provides an essential DNA replication function and influences the subcellular localization of other viral proteins. |
| Related Links | http://dx.doi.org/10.1128/jvi.78.19.10360-10369.2004 |
| Ending Page | 10369 |
| Page Count | 10 |
| Starting Page | 10360 |
| File Format | |
| ISSN | 0022538X |
| e-ISSN | 10985514 |
| Journal | Journal of Virology |
| Issue Number | 19 |
| Volume Number | 78 |
| Language | English |
| Publisher | American Society for Microbiology |
| Publisher Date | 2004-10-01 |
| Access Restriction | Open |
| Rights Holder | American Society for Microbiology |
| Subject Keyword | Immunology Virology Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Virology Immunology Microbiology Insect Science |
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