Table 6.

Minima of the MEP surfaces for RNA–DNA hybrid and DNA structures (kcal/mol)

	RNA–DNA hybrid	DNA
A2	−45.8	−45.8
A1–A2	−48.6	−52.3
A1–A2–A3	−50.2	−55.4
C2	−67.9	−67.9
C1–C2	−75.0	−73.7
C1–C2–C3	−78.3	−75.7
C1–C2–C3–C4	—	−77.4
G2	−63.4	−63.4
G1–G2	−81.9	−77.6
G1–G2–G3	−86.9	−87.3
T2	−45.5	−45.5
T1–T2	−57.9	−54.8
T1–T2–T3	−59.0	−57.1

The surfaces were generated by mapping HF/6-31G* electrostatic potential values onto 0.002 electron/ų isodensity surface, using SPARTAN program.