The radial distribution function, g(r), of ions to the peptide surface, and its integration, N(r), for the mutant C-terminal helix of hLtn at 10°C and 45°C from MD simulations. (a) sodium and (b) chloride. Labels s10, s45 refer to 200mM NaCl at 10°C and 45°C, respectively. Note the difference in the y-axis scales.