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(a) The reduced (1D) electrostatic energy landscape ΔG(Nb) for the BWYV pseudoknot in the different ion solutions with the fixed [Na+]=0.054M and varying [Mg2+] (in M) (labeled on the curves). (b)The partition functions as a function of Nb for the different solutions. The filled squares and the labels denote the locations of the free energy minima and the corresponding .
