  Theoretical calculations of solvation contribution to hole energy in a
polynucleotide chain give very low hole mobility values at zero temperature,
\mu < 10^{-3} cm^2/(V s). We calculated hole mobility at physiological
temperature for the Poly G/Poly C DNA duplex, which gave substantially larger
mobility values. Mobility over the temperature range 20-400 K was calculated.
Taking stacking interaction into account substantially increased hole mobility.
