Table 1.

Effect of monovalent ionic strength on the persistence length and elastic modulus

Ionic strength, mM	Inextensible WLC P, Å	Strong stretching limit P, Å	Extensible WLC
			P, Å	S, pN
1.86	963  ±  48	862  ±  49	949  ±  59	649  ±  82
3.72	704  ±  36	668  ±  32	757  ±  25	745  ±  100
5.58	605  ±  34	629  ±  20	767  ±  54	476  ±  142
7.44	479  ±  30	494  ±  83	622  ±  37	686  ±  65
9.30	621  ±  83	656  ±  97	652  ±  27	452  ±  35
18.6	523  ±  54	521  ±  56	529  ±  95	532  ±  67
93.0	438  ±  14	521  ±  31	511  ±  18	1,006  ±  2
186	561  ±  31	541  ±  33	525  ±  124	1,401  ±  313
586	451  ±  21	472  ±  21	559  ±  32	1,435  ±  160

Results are reported as the mean ± standard error, n ≥ 3.