
ABSTRACT Transcription by the influenza virus RNA-dependent RNA polymerase is dependent on cellular RNA processing activities that are known to be associated with cellular RNA polymerase II (Pol II) transcription, namely, capping and splicing. Therefore, it had been hypothesized that transcription by the viral RNA polymerase and Pol II might be functionally linked. Here, we demonstrate for the first time that the influenza virus RNA polymerase complex interacts with the large subunit of Pol II via its C-terminal domain. The viral polymerase binds hyperphosphorylated forms of Pol II, indicating that it targets actively transcribing Pol II. In addition, immunofluorescence analysis is consistent with a new model showing that influenza virus polymerase accumulates at Pol II transcription sites. The present findings provide a framework for further studies to elucidate the mechanistic principles of transcription by a viral RNA polymerase and have implications for the regulation of Pol II activities in infected cells.
Cell Nucleus, Gene Expression Regulation, Viral, Transcription, Genetic, RNA-Dependent RNA Polymerase, Cell Line, Dogs, Orthomyxoviridae Infections, Influenza A virus, Animals, RNA Polymerase II
Cell Nucleus, Gene Expression Regulation, Viral, Transcription, Genetic, RNA-Dependent RNA Polymerase, Cell Line, Dogs, Orthomyxoviridae Infections, Influenza A virus, Animals, RNA Polymerase II
| citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 198 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Top 1% | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 10% | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Top 10% |
