title: The electronic structure evolution of DNA during its conformation transition process.
abstract: We combined classical molecular dynamics (MD) simulation with ab initio calculations to study the electronic structure evolution of DNA during its conformation transition process. By using MD simulation, we obtained the conformation transition trajectory of an oligonucleotide poly(dC)-poly(dG), from which we selected a series of representative conformations and then performed ab initio calculations for these conformations to reveal their electronic structures. Counterintuitively, the results indicate that during the conformation transition process of DNA, thermal fluctuation plays a more important role than global conformation parameters in affecting the electronic structure of DNA.
authors.affiliation: School of Physics and Microelectronics, Shandong University, Jinan, Shandong, P. R. China. sc3210@gmail.com
authors.forename: Chen
authors.initials: C
authors.lastname: Song
authors.forename: Yueyuan
authors.initials: Y
authors.lastname: Xia
authors.forename: Mingwen
authors.initials: M
authors.lastname: Zhao
authors.forename: Xiangdong
authors.initials: X
authors.lastname: Liu
authors.forename: Jiling
authors.initials: J
authors.lastname: Li
authors.forename: Lijuan
authors.initials: L
authors.lastname: Li
mesh_terms: D004247:DNA / Q000737:chemistry*; D019143:Evolution, Molecular; D009690:Nucleic Acid Conformation
chemical_list: D004247:DNA