메뉴 건너뛰기




Volumn 113, Issue 28, 2009, Pages 9402-9415

First principles effective electronic couplings for hole transfer in natural and size-expanded DNA

Author keywords

[No Author keywords available]

Indexed keywords

BIOCHEMISTRY; COUPLINGS; DNA; MOLECULAR BIOLOGY; NUCLEIC ACIDS;

EID: 67650296007     PISSN: 15206106     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp904295q     Document Type: Article
Times cited : (66)

References (121)
  • 1
    • 84906399950 scopus 로고    scopus 로고
    • S3 of INFM-CNR, c/o Dipartimento di Fisica, UniVersità di Modena e Reggio Emilia, Via Campi 213/A, 41125 Modena, Italy E-mail:migliore@seas. upenn.edu. E-mail: rosa.difelice@unimore.it
    • (S3) of INFM-CNR, c/o Dipartimento di Fisica, UniVersità di Modena e Reggio Emilia, Via Campi 213/A, 41125 Modena, Italy E-mail:migliore@seas. upenn.edu. E-mail: rosa.difelice@unimore.it.
  • 2
    • 84906414327 scopus 로고    scopus 로고
    • xDNA are studied and compared, by means of an accurate first principles evaluation of the effective electronic couplings (also known as transfer integrals, in order to assess the effect of the base augmentation on the efficiency of charge transport through double-stranded DNA. According to our results, the size expansion increases the average electronic coupling, and thus the CT rate, with potential implications in molecular biology and in the implementation of molecular nanoelectronics. Our analysis shows that the effect of the nucleobase expansion on the chargetransfer (CT) rate is sensitive to the sequence of base pairs. Furthermore, we find that conformational variability is an important factor for the modulation of the CT rate. From a theoretical point of view, this work offers a contribution to the CT chemistry in π-stacked arrays. Indeed, we compare our methodology against other standard computational frameworks that have been adopted to tackle the problem of CT in DNA, an
    • (xDNA) are studied and compared, by means of an accurate first principles evaluation of the effective electronic couplings (also known as transfer integrals), in order to assess the effect of the base augmentation on the efficiency of charge transport through double-stranded DNA. According to our results, the size expansion increases the average electronic coupling, and thus the CT rate, with potential implications in molecular biology and in the implementation of molecular nanoelectronics. Our analysis shows that the effect of the nucleobase expansion on the chargetransfer (CT) rate is sensitive to the sequence of base pairs. Furthermore, we find that conformational variability is an important factor for the modulation of the CT rate. From a theoretical point of view, this work offers a contribution to the CT chemistry in π-stacked arrays. Indeed, we compare our methodology against other standard computational frameworks that have been adopted to tackle the problem of CT in DNA, and unravel basic principles that should be accounted for in selecting an appropriate theoretical level. © 2009 American Chemical Society.
  • 34
    • 84906371054 scopus 로고
    • 1956, 24, 979.
    • (1956) , vol.979 , Issue.24
  • 53
    • 84906385433 scopus 로고    scopus 로고
    • Bylaska, E. J, de Jong, W. A, Govind, N, Kowalski, K, Straatsma, T. P, Valiev, M, Wang, D, Apra, E, Windus, T. L, Hammond, J. et al. NWChem, A Computational Chemistry Package for Parallel Computers, Version 5.1; Pacific Northwest National Laboratory: Richland, WA, 2007
    • (a) Bylaska, E. J.; de Jong, W. A.; Govind, N.; Kowalski, K.; Straatsma, T. P.; Valiev, M.; Wang, D.; Apra, E.; Windus, T. L.; Hammond, J. et al. NWChem, A Computational Chemistry Package for Parallel Computers, Version 5.1; Pacific Northwest National Laboratory: Richland, WA, 2007.
  • 61
    • 14344256924 scopus 로고    scopus 로고
    • In the present work, we do not deal with the issue of the problematic geometry optimization by pure DFT, treated in: Kurita, N, Danilov, V. I, Anisimov, V. M. Chem. Phys. Lett. 2005, 404, 164
    • In the present work, we do not deal with the issue of the problematic geometry optimization by pure DFT, treated in: Kurita, N.; Danilov, V. I.; Anisimov, V. M. Chem. Phys. Lett. 2005, 404, 164.
  • 80
    • 84906399946 scopus 로고    scopus 로고
    • An ideal conformation is marked by the base step parameters used to generate it with nucleic acid builders. A real conformation is specified by the name of the pdb file where it is extracted from
    • An ideal conformation is marked by the base step parameters used to generate it with nucleic acid builders. A real conformation is specified by the name of the pdb file where it is extracted from.
  • 93
    • 66349104283 scopus 로고    scopus 로고
    • Kubar?, T.; Elstner, M. J. Phys. Chem. B 2009, 113, 5653.
    • Kubar?, T.; Elstner, M. J. Phys. Chem. B 2009, 113, 5653.
  • 111
    • 0003926839 scopus 로고    scopus 로고
    • 2nd ed, John Wiley & Sons, Ltd: Chichester, U. K
    • Jensen, F. Introduction to Computational Chemistry, 2nd ed.; John Wiley & Sons, Ltd: Chichester, U. K., 2007; pp 153-159.
    • (2007) Introduction to Computational Chemistry , pp. 153-159
    • Jensen, F.1
  • 117
    • 84906414325 scopus 로고    scopus 로고
    • Bacon, A. D. M. S. Thesis. University of Ghelph, Canada, 1976.
    • (c) Bacon, A. D. M. S. Thesis. University of Ghelph, Canada, 1976.
  • 120
    • 84906414326 scopus 로고    scopus 로고
    • IF varies linearly with the roll (for small enough changes of this step parameter), approximately in the same way for different stacks, the change obtained for the xAT-xAT system can be reasonably expected.
    • IF varies linearly with the roll (for small enough changes of this step parameter), approximately in the same way for different stacks, the change obtained for the xAT-xAT system can be reasonably expected.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.