Table 2.

Chromatin compaction assessment by sedimentation coefficients of 12-nucleosome fibers with different tails

Array type	NaCl (mM)	Computed $S_{20,w}$ (S)	Experimental $S_{20,w}$ (S)
All tails wild-type	10	29.3 $\pm$ 0.2	30
	150	36.5 $\pm$ 0.7	36.5
Truncated H2A/H2B	10	29.0 $\pm$ 0.1	29.5
	20	31.3 $\pm$ 0.6	31
	75	34.3 $\pm$ 0.8	32
	150	35.8 $\pm$ 1.7	34
Truncated H3/H4	10	26.6 $\pm$ 0.6	26
	20	28.8 $\pm$ 0.6	27.5
	75	32.4 $\pm$ 1.0	28.5
	150	33.9 $\pm$ 1.0	31
All tails truncated	10	24.6 $\pm$ 0.1	22
	150	32.4 $\pm$ 0.4	28

See Fig. 10.