Geometries associated energy gap and electronic properties of adenine, DNA base interaction on the ZnO model cluster have been investigated by using density functional theory with the B3LYP exchange-correlation potential and effective core potential (ECP) LanL2DZ basis sets. The most stable interaction characteristics were analysed with respect to the binding energy, frontier orbital, elemental positions. Natural population analysis charge is also examined to understand the associated charge transfer in structures of cluster and complex. In the Zn-N bonding, combination coefficient from atom orbitals of nitrogen is much higher than that of zinc. The corresponding weight for this coefficient is 94.80%. The results of this study can serve as an orientation for the design of composite material in biomedical nanotechnology.
An intrastrand three-DNA-base interaction is a key specificity determinant of F transfer initiation and of F TraI relaxase DNA recognition and cleavage