Cation Involvement in Telomestatin Binding to G-Quadruplex DNA

Figure 3

Positive ion mode electrospray mass spectra of 15 𝜇M telomestatin (a) in 80/20 water/methanol, (b) in 80/20 water methanol and 5 𝜇M ammonium acetate, and (c) in 80/20 water methanol and 5 𝜇M potassium chloride.

(a)

(b)

(c)