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Interaction of the Influenza A Virus Nucleocapsid Protein with the Viral RNA Polymerase Potentiates Unprimed Viral RNA Replication

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FIG. 1. Purity of preparations of purified influenza virus polymer-ase (A) and purified untagged NP protein (B)
FIG. 3. NP strongly stimulates unprimed cRNA synthesis by theviral polymerase. The viral polymerase was incubated with the U3A
FIG. 4. The RNA-binding activity of the NP protein is not required for its stimulation of the unprimed synthesis of either a 50-nt cRNA or a50-nt vRNA

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