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刘成卜
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期刊论文
Theoretical study of incorporating 6-thioguanine into a guanine tetrad and their influence on the metal ion-guanine tetrad
Chemical Physics Letters 389(2004)421-426，-0001，（）：
G-tetrad and other 6-thioguanine (SG) incorporated tetrads have been studied in this Letter. The geometries, energies, charge distributions have been discussed. The effects of different cations (K+ and Na+) on the various tetrads have also been studied. The outcomes show that as the SG number increases the tetrad becomes more and more unstable. The Na+ binds more tightly with the tetrad than that of K+ without hydration correction, while considering hydration effects the stability sequence changes to K+>Na+. Electrostatic potential map of the tetrads have been plotted and the binding sites of cations have been also shown.
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