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. 1998 Sep 29;95(20):11613–11618. doi: 10.1073/pnas.95.20.11613

Figure 4.

Figure 4

A model for the interaction between the BMV RdRp and the subgenomic promoter elements needed to initiate RNA synthesis. Essential nucleotides are boxed with the key features putatively required for hydrogen bond formation with amino acid residues in RdRp shown above. The 2′-hydroxyl at position −11 also contributes to RNA synthesis. Recognition of the initiating nucleotide may occur by the rGTP primer bound by the RdRp. The oval represents a low-resolution structure of the RdRp complex.