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Figure 1.
FIG. 1. A, chemical structures of G-AF and G-AAF. dR,
deoxyribose ring. The proton and the N-acetyl group that
differentiate G-AF from G-AAF are shown in orange. B, schematic
of the polymerase active site. Sites through which the template
base (red) traverses during replication are shown (see the
Introduction for description).
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