Figure 3.

CD spectra of A₃G₃(TTAG₃)₃A₂ in 10 mM sodium phosphate buffer (pH 7) with 135 mM NaCl (green line) and upon addition of 30 mM K⁺ (violet lines) measured immediately (dashes), after 3 h (dash-dot-dot), and 1 day (thick solid line), and with 100 mM K⁺ after 3 days (thin solid line). Upper CD spectra are of G₃(TTAG₃)₃ and G₃(TTAG₃)₁₅ in 10 mM sodium phosphate buffer (pH 7) with 150 mM NaCl (green line) and after addition of 100 mM K⁺ measured immediately (blue dots) and after 3 days (blue line). CD spectra were measured in 0.1 cm cells at 0°C.