Figure 1.
Structures of DNA phosphodiester and phosphate group mimics used in this study
(A) Phosphodiester (PO), (B) phosphorothioate (PS), and (C) a phosphoryl guanidine (PG) group, namely 1,3-dimethylimidazolidin-2-imine (Dmi), R = H or OMe.
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