Calculation of the Effects of Hydration and Divalent Metal Ions on Nucleotide Base Pairs: Single G–C and Poly(G–C)

作者: B. F. Rozsnyai , J. Ladik

DOI: 10.1063/1.1672850

关键词: Electronic band structureBase pairComputational chemistryPolymerAb initio quantum chemistry methodsCrystallographyMoleculeIonNucleotideWave functionChemistryPhysical and Theoretical ChemistryGeneral Physics and Astronomy

摘要: SCF calculations have been carried out for the electronic energy levels and wavefunctions of single G–C poly(G–C) in presence a neutral water molecule or Mg1+ ion. The Pariser‐ Parr–Pople (P–P–P) approximation was used base pair, its equivalent, semiempirical SCF–LCAO–crystal‐orbital (CO) approximation, polymer. Energy bands are presented four different cases. According to results, Mg2+ ion very strongly changes band structure poly(G–C). probable consequences this on conductive properties DNA possibility ab initio periodic models discussed.

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