Figure 1.
(A) Thermal difference spectra of 5 μM DNAs; (B) circular dichroism spectra of 5–10 μM DNAs; (C) typical UV melting profiles. Blue and green lines denote single-stranded C4 and G4 at pH 6.0 and 7.0, respectively; and the red line indicates the duplex DNA made of the complementary sequences at pH 7.0.