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Structures of Influenza RdRP Pol II CTD Binding Sites. (A) Ribbon structures of FluA RdRP (left) (PDB:5M3H), FluB RdRP (centre) (PDB:5M3J), and FluC RdRP (right) (PDB:6F5P) bound to Pol II CTD peptides. The PB1 subunit is coloured orange, PB2 subunit green, and PA subunit blue. CTD peptides are shown as red spheres, or mesh for the unresolved density on FluB RdRP. (B) Detailed views of CTD Site 1 (left) and Site 2 (centre) on FluA RdRP, and Site 1 on FluC RdRP (right).
