Figure 1

Typical AFM images (a–c) and cross-section profiles (d–f) of mica-adsorbed HRP, obtained in control experiments (a,d) and after 40-min incubation of the HRP solution in the vicinity of the apex of the pyramid (b,e) or in the center of its base (c,f). The cross-section profiles correspond to the lines shown in the respective AFM images. The images were obtained using NOVA Px software (ver. Nova_3.4_20014; NT-MDT, Moscow, Zelenograd, Russia).