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. Author manuscript; available in PMC: 2017 Jul 21.
Published in final edited form as: J Chem Theory Comput. 2016 Jun 17;12(7):3370–3381. doi: 10.1021/acs.jctc.6b00028

Figure 4.

Figure 4

(a) The electrostatic free energies ΔG and (b) the total charge neutralization ftot as functions of [Mg2+] for the 80-nt RNA duplex with 10 mM Na+, 76-nt yeast tRNAPhe with 32mM Na+, and 58-nt fragment of rRNA with 20 mM and 60 mM K+, respectively. The inset of (b) shows the binding fraction of Cl− ions.