Electrostatics in Macromolecular Solutions - Food Colloids: Self-Assembly and Material Science - page 140

Figure 7 Free energy of interaction between two spherical aggregates of radius 10 A ˚ and
net charge 24e. (a) The system contains no salt but only counterions of different
valency (dielectric permittivity ¼ 78, temperature ¼ 298 K). (b) As (a), but
with monovalent counter-ions and variation of the relative dielectric permittivity
9.4.3 Effect of Titrating Groups
All proteins (and many other macromolecules) contain ionizable residues whose
ionization status depends on the interaction with other molecules. This means
that the electrostatic interaction between two proteins, besides involving the