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. 2007 Sep 7;94(2):640–647. doi: 10.1529/biophysj.107.116913

FIGURE 4.

FIGURE 4

AFM images of membrane patches from Rb. sphaeroides membranes without the PufX polypeptide, which is the determinant of dimerization of RC-LH1 core complexes. Scale bars = 100 nm. (a) AFM image of a membrane fragment from a mutant with no PufX. The image is 3D enhanced to visualize the protruding H-units of the RCs. (b and c) Two AFM images of non-PufX membrane fragments showing the periplasmic side. The insets show zoomed-in images on the areas indicated by the blue boxes and are 3D enhanced for clarity.