  A tight-binding model together with a novel statistical method are used to
investigate the relation between the sequence-dependent electric transport
properties and the sequences of protein-coding regions of complete genomes. A
correlation parameter $\Omega$ is defined to analyze the relation. For some
particular propagation length $w_{max}$, the transport behaviors of the coding
and non-coding sequences are very different and the correlation reaches its
maximal value $\Omega_{max}$. $w_{max}$ and \omax are characteristic values for
each species. The possible reason of the difference between the features of
transport properties in the coding and non-coding regions is the mechanism of
DNA damage repair processes together with the natural selection.
