| Virus Name | Zaire ebolavirus |
| Virus Short Name | ZEBOV |
| Order | Bunyavirales |
| Virus Family | Filoviridae |
| Virus Subfamily | N.A. |
| Genus | Ebolavirus |
| Species | Zaire ebolavirus |
| Host | Bats, human and primates |
| Cell Tropism | N.A. |
| Associated Disease | Hemorragic fever |
| Mode of Transmission | Zoonosis, contact with body fluids |
| VIPR DB link | http://www.viprbrc.org/brc/vipr_allSpecies_search.do?method=SubmitForm&decorator=filo |
| ICTV DB link | https://talk.ictvonline.org/ictv-reports/ictv_9th_report/negative-sense-rna-viruses-2011/w/negrna_viruses/197/filoviridae |
| Virus Host DB link | N.A. |
| Paper Title | DNA topoisomerase 1 facilitates the transcription and replication of the Ebola virus genome |
| Author's Name | Kei Takahashi, Peter Halfmann, Masaaki Oyama, Hiroko Kozuka-Hata, Takeshi Noda, Yoshihiro Kawaoka |
| Journal Name | Journal Of Virology |
| Pubmed ID | 23658456 |
| Abstract | Ebola virus (EBOV) protein L (EBOL) acts as a viral RNA-dependent RNA polymerase. To better understand the mechanisms underlying the transcription and replication of the EBOV genome, we sought to identify cellular factors involved in these processes via their coimmunoprecipitation with EBOL and by mass spectrometry. Of 65 candidate proteins identified, we focused on DNA topoisomerase 1 (TOP1), which localizes to the nucleus and unwinds helical DNA. We found that in the presence of EBOL, TOP1 colocalizes and interacts with EBOL in the cytoplasm, where transcription and replication of the EBOV genome occur. Knockdown of TOP1 markedly reduced virus replication and viral polymerase activity. We also found that the phosphodiester bridge-cleaving and recombination activities of TOP1 are required for the polymerase activity of EBOL. These results demonstrate that TOP1 is an important cellular factor for the transcription and replication of the EBOV genome and, as such, plays a key role in the EBOV life cycle. |
| Used Model | HEK293 and BHK cells |
| DOI | 10.1128/JVI.03544-12 |
