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Citation: HE Qin, ZHOU Li-xin. Theoretical Study on the Interaction of Platinum Compounds with DNA Base Pairs[J]. Acta Physico-Chimica Sinica, ;2005, 21(08): 846-851. doi: 10.3866/PKU.WHXB20050805 shu

Theoretical Study on the Interaction of Platinum Compounds with DNA Base Pairs

HE Qin ,
ZHOU Li-xin

1.
Department of Chemistry, Jinan University, Guangzhou 510632; Department of Chemistry, Fuzhou University, Fuzhou 350002

Received Date: 1 December 2004
Available Online: 15 August 2005

The binding of a series of square planar Pt(II) adducts on the Watson-Crick base pair AT and GC was investigated using advanced quantum chemical method. The result showed that the AT base pair was mainly influenced by electrostatic effect, the GC base pair was influenced by both electrostatic and polarization effect. The platinated purine and pyrimidine base pair was moderately strengthened, whereas interaction between the purine and pyrimidine base pair was slightly influenced compared with that of the isolated one. Further calculations on the Pd(II) and Ni(II) analogs showed a similar trend. The natural bonding orbital (NBO) analysis of the second-order perturbative energy ΔE2 well predicated strength of the H-bond in the base pair.
- Pt (II) adduct;Pd (II) adduct;Ni (II) adduct;Base pair;Hydrogen bond; HF method;DFT
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