TABLE 1.

The average diameter of the LH1 ring, with and without the RC when prepared with and without detergents

The average diameter and standard deviation of the LH1 ring, with and without the RC, in line with the scan direction (width) and orthogonal to the scan direction (height). The diameter was measured between the highest points of the ring, i.e. the average ring diameter. There is no significant difference in the dimensions regardless of whether detergent has been used in the preparation of the membrane samples. The smaller number of diameters measured of core complexes represents the difficulty in obtaining AFM tips that are sufficiently sharp to resolve the ring when it is in such close proximity to the protruding H-subunit.

	Width	Height	Rings measured (n)
	nm	nm
LH1-only with detergent	10.1 ± 0.9	10.0 ± 1.6	61
RC-LH1 with detergent	11.2 ± 0.5	11.5 ± 0.6	12
LH1-only no detergent	9.9 ± 0.7	10.6 ± 0.9	21
RC-LH1 no detergent	11.2 ± 0.6	11.3 ± 0.6	9