FIGURE 12.

Comparison between finite and classic (infinite chain) WLC solutions. (A) Persistence length determined by fitting experimental data to the classic WLC solution (p_wlc, red) and the finite WLC solution using half-constrained boundary conditions (p_fin, blue) as a function of DNA length. (B) Fractional error in the fitted p from p_∞ showing an approximately threefold reduction in the length dependence of p_fin as compared to p_wlc. Ideally, p, an intrinsic property of the molecule, would be independent of L. Error bars represent the standard error of the mean.