Abstract
We use a tight-binding formulation to investigate the transmissivity and
the current-voltage (I-V) characteristics of sequences of double-strand
DNA molecules. In order to reveal the relevance of the underlying
correlations in the nucleotides distribution, we compare the results for
the genomic DNA sequence with those of artificial sequences (the
long-range correlated Fibonacci and Rudin-Shapiro one) and a random
sequence, which is a kind of prototype of a short-range correlated
system. The random sequence is presented here with the same first
neighbors pair correlations of the human DNA sequence. We found that the
long-range character of the correlations is important to the
transmissivity spectra. although the I-V curves seem to be mostly
influenced by the short-range correlations. (C) 2009 Elsevier B.V. All
rights reserved.
Users
Please
log in to take part in the discussion (add own reviews or comments).