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. Author manuscript; available in PMC: 2017 Oct 20.
Published in final edited form as: J Chem Theory Comput. 2016 Nov 7;12(12):5946–5959. doi: 10.1021/acs.jctc.6b00712

Figure 5.

Figure 5

Density (number of atoms per unit volume) and charge density along the radius of the equilibrated chromatin fiber: (a) Linker DNA fills the core and H2A and H2B N-terminal histone tails extend out of the fiber surface, leading to a wider distribution of atoms along the radial axis, compared to the initial structure. (b) After equilibration, the core becomes more negatively charged, due to the presence of linker DNA in the core, and the outer region becomes positively charged due to the presence of histone tails.