Abstract
Dodecamer duplex DNA containing anomeric (α/β‐d) and enantiomeric (β‐l/β‐d) 2’‐deoxycytidine mismatches was studied with respect to base pair stability in the absence and presence of silver ions. Stable duplexes with silver‐mediated cytosine–cytosine pairs were formed by all anomeric and enantiomeric combinations. Stability changes were observed depending on the composition of the mismatches. Most strikingly, the new silver‐mediated base pair of anomeric α‐d‐dC with enantiomeric β‐l‐dC is superior to the well‐noted β‐d/β‐d‐dC pair in terms of stability. CD spectra were used to follow global helical changes of DNA structure.
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