Figure 2.
HRF-AFM molecular diameters and topographies of the small soluble oligomeric species of lipid-free G93ASOD1 in HBS buffer pH 7.4. (A) monomer (4.1 ± 0.14 nm, n=20), (B) dimer (6.8 ± 0.15 nm, n=20), (C) tri-lobe (8.1 ± 0.32 nm, n=20), (D) tetramer (13.6 ± 0.31 nm, n=7). Full scale z-axis, 4 nm. Bar, 5 nm.