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Figure 6 | Nanoscale Res Lett

Figure 6

From: Atomic Force Microscopy Study of Protein–Protein Interactions in the Cytochrome CYP11A1 (P450scc)-Containing Steroid Hydroxylase System

Figure 6

AFM images (a) and the corresponding density of distribution with height (ρ( h )) for AdR/CYP11A1 complexes (b); comparison of ρ( h ) AdR/CYP11A1 distribution vs. normalized distribution densities of individual AdR and CYP11A1 mon (the summarized area under ρ( h ) CYP11A1 and ρ( h ) AdR curves is reduced to 100%) (c); differential curve (Δρ) between ρ( h ) CYP11A1/AdR for mixture and the sum of normalized distribution densities of individual CYP11A1 mon and AdR (d). Tapping mode. Experimental conditions were as follows: the mixture of 5 μM solutions (10 μl each) of appropriate individual proteins (monomeric CYP11A1, containing 1% Emulgen 913, and AdR) in the 50 mM KP, pH 7.4, was incubated for 10 min, diluted 2.5 times in the same buffer, and a 5-μl portion of the mixture was immediately placed onto mica, T = 25°C. Arrows (1) indicate the images of AdR and CYP11A1 monomers. Arrows (2) indicate the AdR/CYP11A1 images.

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