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. Author manuscript; available in PMC: 2008 Jul 14.
Published in final edited form as: J Chem Phys. 2005 Jan 22;122(4):44903. doi: 10.1063/1.1842059

TABLE I.

Mean thickness δ of the tightly bound region for B-DNA of different length L in solutions with different [Na+] or [Mg2+].

Width δ (Å)
[Na+]
[Mg2+]
L 1M 0.1M 0.01M 0.001M 0.1M 0.01M 0.001M 0.0001M
40 0.14 0.06 0.03 0.02 2.5 2.4 2.1 2.0
30 0.12 0.04 0.02 0.01 2.4 2.1 2.0 1.9
20 0.08 0.01 0.0 0.0 2.2 1.9 1.7 1.5
10 0.01 0.0 0.0 0.0 1.8 1.3 1.0 0.8