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Difference CD spectra of poly(dA), d(pA)30 and d(pA)25 binding to DNmt. The ratio of d(pA)x to DNmt was 1:2. Spectrum of poly(dA) refers to the difference spectra [poly(dA) − DNmt2⋅poly(dA) triplex]. Solution conditions: 1.0 × 10−5 M in oligomer, 0.03 M KCl, 10 mM phosphate buffer, pH 6.8 at 25°C.
