The RNA genome of influenza virus is transcribed and replicated by the viral RNA polymerase complex in the cell nucleus. We have generated green fluorescent protein (GFP)-tagged polymerase subunits to study the assembly of the polymerase complex. Our results show that individually expressed polymerase basic protein 1 (PB1) and polymerase acidic protein (PA) subunits were distributed in both the cytoplasm and the nucleus, while the polymerase basic protein 2 (PB2) subunit accumulated in the nu...Expand abstract
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The PA subunit is required for efficient nuclear accumulation of the PB1 subunit of the influenza A virus RNA polymerase complex.
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