Affinity Purification of Influenza Virus Ribonucleoprotein Complexes from the Chromatin of Infected Cells

Lyco negative strand, RNA viruses. The genome of influenza viruses is packaged in the form of viral rib nuclear protein complexes, or VR nps in which the single stranded genome is encapsulated by the nuclear protein and associated with the turmeric polymerase complex consisting of the PA PB one and PB two subunits to purify intact complexes from infected mammalian cells. Hela cells are incubated with recombinant strept tagged influenza virus.

Once the virus enters the cells, the viral RNA is synthesized in the nuclei following infection, the cells are lies to using a detergent and fractionated into cytoplasmic nuclear and chromatin fractions using centrifugation and assault based chromatin fraction protocol. Finally, the strept tagged VRPs are affinity purified from each fraction analysis of the protein and RNA composition of purified VR NPS by silver staining demonstrates that using this protocol even tightly, chromatin bound VRPs can be isolated.Intact. So one of the main advantages of our protocol when compared to standard methods for affinity purifying influenza virus rib nuclear protein complexes is that by using our method, it's possible to purify VR NPS from the chromatin of infected cells, which is known to be the site of influenza virus mRNA synthesis.