Figure 4.

Core histone tail frequency interactions for 12-oligonucleosomes at 150 mM NaCl at different concentrations $\left({\rho }_{\text{LH}}\right)$ and NRLs (173, 191, and 209 bp). At the top we show the main elements of the nucleosome core and the color code for the histone tails: H2A1 (yellow), H2A2 (orange), H2B (purple), H3 (blue), and H4 (green). We plot the interaction of the tails with (A) parental linker DNAs, (B) nonparental nucleosome cores, and (C) nonparental linker DNAs. Yellow boxes highlight the LH concentration that triggers compact fibers at each NRL (see equilibrium structures in Fig. 1). Fig. 4 includes additional tail interactions and NRLs. To see this figure in color, go online.