We propose a minimal model for spherical proteins with aeolotopic pair interactions to
describe the equilibrium phase behavior of lysozyme. The repulsive screened Coulomb
interactions between the particles are taken into account assuming that the net charges are
smeared out homogeneously over the spherical protein surfaces. We incorporate attractive
surface patches, with the interactions between patches on different spheres modeled by an
attractive Yukawa potential. The parameters entering the attractive Yukawa potential part are …