Competitive Counterion Binding to Poly (Alkylene Phosphate)s related to Natural Teichoic Acids. The Poisson-Boltzmann Approach

摘要

The problem of competitive metal ion binding to poly (alkylene phosphate)s, considered as synthetic models of natural teichoic acids, was analysed theoretically applying the Poisson-Boltzmann (PB) equation to a cylindrical cell model. There were calculated the radial distribution functions as well as the degree of ion binding of mono- and divalent metal ions to polyphosphate ions in solutions of different concentrations ranging from 10~-5 M to 10~-2 M and containing different amounts of M~+ and M~2+ counterions.