NaCl condensation around DNA

Ion condensation to DNA is an excellent example of non-specific interactions of cations with polyelectrolytes. In this example we demonstrate NaCl condensation to a B-DNA dodecamer.

PQR file

The starting structure was a 35 base-pair DNA molecule with a net charge of -70 e. The PQR file for this system is available for download here and shown in the following figure:

Figure 1. B-DNA dodecamer