Sequence Dependence of Electronic Transport in DNA

Abstract

We study electronic transport in long DNA chains using the tight-binding approach for a ladder-like model of DNA. We find insulating behavior with localizaton lengths xi ~ 25 in units of average base-pair seperation. Furthermore, we observe small, but significant differences between lambda-DNA, centromeric DNA, promoter sequences as well as random-ATGC DNA.

4 pages, 1 figure, Proceedings of "Transport in Interacting and Disordered Systems (TIDS11)", accepted for publication in phys. stat. sol. (b/c), including pss style files

References in corpus (7)

• Backbone-induced semiconducting behavior in short DNA wires
• Electronic Transport in DNA
• Scaling in Interaction-Assisted Coherent Transport
• Critical Exponents for the Metal--Insulator Transition in Disordered Systems
• Localization of Electronic States in Chain Model Based on Real DNA Sequence
• Effects of Scale-Free Disorder on the Anderson Metal-Insulator Transition
• The enhancement of the localization length for two interacting particles is vanishingly small in transfer-matrix calculations

Cited by in corpus (3)

• Tight-binding modeling of charge migration in DNA devices
• AC-field-controlled localization-delocalization transition in one dimensional disordered system
• Environment effects on the electric conductivity of the DNA