Electrostatics in Macromolecular Solutions - Food Colloids: Self-Assembly and Material Science - page 137

Figure 5 Interaction between two smMLCK peptides at two different monovalent salt

concentrations: (a) 4 mM and (b) 100 mM. The smMLCK peptide consists of
15 amino acids and its net charge is +7e. The thick lines show the simulated
free energy of interaction. The solid thin line is from the screened Coulomb
interaction, Equation (10). The thin line with filled circles is the simulated total
energy of interaction. The line marked with filled squares is the electrostatic
interaction between the charges on the two peptides only

interaction, A(r), based on the DH approximation

A ð r Þ= kT ¼ l B Z 1 Z 2 exp ð k r Þ
r 12

; ð 10 Þ