Fig. 4
From: Abolishing HIV-1 infectivity using a polypurine tract-specific G-quadruplex-forming oligonucleotide
Structural analysis of ODN A. a The indicated ODNs (8 μM) were incubated for 1 h in PBS pH 7.4 or in PBS/HCl pH 4.5 and analyzed by native polyacrylamide gel electrophoresis. b CD spectra of ODN A were recorded at different pH and different ionic concentrations. c CD spectra of ODN A were recorded between 20 and 100 °C using various ionic concentrations. Wavelengths are indicated on the right. Ellipticity: dark red = 55 mdeg; dark blue = −20 mdeg