Counterion atmosphere around DNA double helix: trapping of counterions at the nanoscale

  title={Counterion atmosphere around DNA double helix: trapping of counterions at the nanoscale},
  author={Sergiy Perepelytsya and Oleksii Zdorevskyi},
  journal={Low Temperature Physics},
DNA is a strong polyelectrolyte macromolecule making metal ions (counterions) condense to a cloud around the double helix. The counterions may be localized outside the macromolecule and inside the minor and major grooves of the double helix. In the present work, the distribution of condensed counterions between inner and outer regions of DNA has been studied using the approaches of counterion condensation theory. The results have shown that the number of counterions trapped inside the… 

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