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. Author manuscript; available in PMC: 2014 Oct 31.
Published in final edited form as: Nat Struct Mol Biol. 2010 Feb 14;17(3):379–388. doi: 10.1038/nsmb.1771

Figure 4.

Figure 4

Structure of the [AF]G•C-2 Dpo4 post-extension ternary complex. (a) Schematic of the expected pairing of the [AF]G-template with the 13-mer primer, ending with a 2′,3′-dideoxy-G, and added dTTP. (b) Schematic of the observed base pairing arrangement within the Dpo4 active site. (c) Structure of the active site. Simulated annealing Fo-Fc omit map contoured at 3σ level is colored in blue (2.0 Å resolution). (d) Watson-Crick base pair between the [AF]G(anti) and C14(anti) at the (–2) position. (e) Accommodation of the AF-moiety in a pocket on the surface of the little finger domain.