Salt-dependent folding of 12-nucleosome chromatin fibers. Sedimentation coefficients for 12-nucleosome fibers with NRL = 209 bp, without LHs, and with 10, 20, 50, 100, 150, and 200 mM NaCl. Blue dashed line represents experimental data taken from (63). Green squares with error bars show the average and standard deviation obtained from our BD simulations. Chromatin fiber configurations at increasing salt concentrations, from 10 to 200 mM. Linker DNA is shown in orange, and histone tails beads are shown in green (H3), yellow (H2A), red (H2B), and blue (H4). To see this figure in color, go online.