Table 1.

Comparison of FRET characteristics and high (E > 0.4), intermediate (0.25 < E < 0.4), and low (E < 0.25) FRET populations of end-labeled (X,Z) and internally labeled (Y) nucleosome reconstitutions, based on the FRET histograms in Fig. 2c

Nucleosome	E < 0.25	0.25 < E < 0.4	E > 0.4	Keq	E of main population
X	36%	19%	45%	0.37	0.53 ± 0.3
Y	8%	6%	86%	0.07	0.63 ± 0.22
Z	17%	13%	70%	0.19	0.61 ± 0.27