Figure 14.

Variation of persistence length with salt concentration for the 60 bp duplex, Seq1 (red) and 130 bp duplex, Seq2 (blue) from simulations. The solid curves denote fits of the simulation data to the OSF theory. The green open circles are l_p values reported by Bustamante and co-workers.¹⁰⁰ The triangles denote experimental data of Harrington et al.¹⁰² The open squares are data from the experiments of Sobel and Harpst¹⁰³ on bacteriophage DNA. The brown polygon corresponds to the measurement of Maret and Weill.¹⁰⁴ The filled squares denote the persistence lengths estimated by other groups: 3SPN1 (teal),⁹¹ 3SPN2 (orange),²⁴ and oxDNA (purple).⁴² We do not show the data from Plotkin and co-workers,²² because the estimated l_p values are too low and lie outside the experimentally reported range.