Effect of an OEEF with a field strength of 0.3 V Å -1 in four different conformers of α-ribose phosphate. The red and blue bars are the relative free energies with respect to the lowest energy conformer without the field and with a field strength of 0.3 V Å -1 respectively. The green bars represent the energetic stabilization (absolute values) under the influence of the OEEF. One can observe that both conformers 31 and 67 drop below conformer 1 in the presence of the electric field due to a disproportionate electrostatic stabilization.