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Given here is the ion occupancy around a single A-A mismatch in RNA and DNA. (Red) Base A5; (blue) base A14. RNA-CAG: (a1) anti-anti; (a2) anti-syn; and (a3) syn-syn. RNA-GAC: (b1) anti-anti; (b2) anti-syn; and (b3) syn-syn. DNA-CAG: (c1) anti-anti; (c2) anti-syn; and (c3) syn-syn. DNA-GAC: (d1) anti-anti; (d2) anti-syn; and (d3) syn-syn. To see this figure in color, go online.
