Figure 4. Absorption spectra of SG.

(A) UV-Vis absorption spectra of SG (5 µM) in the absence and presence of 5 µM DNA1-Ys. The corresponding fully matched DNAs (FM-DNA) were used as controls. (B) UV-Vis absorption spectra of SG (5 µM) alone at pH 8.3 (a) and pH 6.0 (b).