TABLE 1.

FRET efficiencies for a single donor-acceptor pair within an oligomer of size n

Estimates of the apparent FRET efficiency at different ratios of acceptor to donor were analyzed in terms of Equations 10 (E_app^ddq) and 11 (E_app^ase) to obtain a separate estimate of the pairwise efficiency (E) for each set of data and a single estimate common to both sets. Apparent efficiencies were calculated according to Equations 1 and 2 with a correction for photobleaching of the donor (i.e. k_D = k_D^ec) or with no correction (i.e. k_D = k_D^e), as described in the text. The fitted curves obtained with single values of E common to both sets of data are shown in Fig. 5.

n	Efficiency
	Uncorrected for donor photobleaching			Corrected for donor photobleaching
	From Eappddq	From Eappase	From Eappddq and Eappase	From Eappddq	From Eappase	From Eappddq and Eappase
2	0.365 ± 0.028	0.384 ± 0.028	0.381 ± 0.019	0.465 ± 0.025	0.504 ± 0.028	0.495 ± 0.019
3	0.212 ± 0.018	0.207 ± 0.017	0.207 ± 0.012	0.283 ± 0.018	0.287 ± 0.019	0.287 ± 0.013
4	0.149 ± 0.013	0.142 ± 0.012	0.143 ± 0.009	0.204 ± 0.014	0.202 ± 0.014	0.202 ± 0.010
6	0.094 ± 0.009	0.087 ± 0.008	0.088 ± 0.005	0.131 ± 0.009	0.127 ± 0.009	0.128 ± 0.006
8	0.068 ± 0.007	0.063 ± 0.006	0.063 ± 0.004	0.096 ± 0.007	0.093 ± 0.007	0.093 ± 0.005