“Nanochemistry and biotechnology”
About the influence on the possibility of metabolic electron transfer of structural features of DNA 
L. V. Shmeleva1, A. D. Suprun1 
1 Department of Theoretical Physics, Faculty of Physics, Taras Shevchenko National University of Kyiv. Volodymyrska Street, 64/13, Kyiv-01601, Ukraine. 
E-mail: _lshmel@univ.kiev.ua
The possibility of metabolic transfer of an electron along complementary DNA chains has been analyzed. The transfer fact is experimentally established [1]. 
But for DNA, an important question remains unclear. What exactly is the cause of the directional transfer of the metabolic electron in the absence of an external electrostatic field? By analogy with proteins [2], such a cause is most likely is in essential atomic-molecular heterogeneity. Exactly it can lead to an appearance of a residual effective field. By the electron, it is perceived as external and forces it to actual charge transfer along the complementary chains of DNA. It is shown that consideration of complementary chains of DNA as completely homogeneous and identical molecular systems is inexpedient. Such consideration does not lead to the emergence of the conditions necessary for electron transfer and the appearance of a nanocurrent. But the considering of the complementary chains of DNA as structurally different and heterogeneous leads to the appearance of nanocurrent. Therefore, it is understandable that further consideration of the real structure of the nucleotide pair is necessary. It is considered as a unit cell in DNA. Taking into account its real structure one can lead obtain not only to qualitative estimates the nanowire in DNA, but also to satisfactory quantitative estimates. New, spatially localized solution, similar to the soliton solution, was obtained. But it differs from the soliton solution in two circumstances. First, it is not a solution of a non-linear equation. And, secondly, it has an indefinite derivative at the point of conditional electron localization. At the level of the simplest DNA model under consideration, we obtained estimates of the mobility and conductivity of such an electron. For different variants of taking into account heterogeneity and differences between the complementary chains of DNA, new effects appear. 

[1] Astakhova T. Yu., Likhachev V. N., Vinogradov G. A. Russian Chemical Review. 2012. 81 (11), 994-1010. 
https://www.turpion.org/php/paper.phtml?journal_id=rc&paper_id=4308 
[2] Suprun A. D, Shmeleva L. V. Nanoscale Research Letters. 2015. 10:121. doi: 10.1186/s11671-015-0763-0. 
http://www.nanoscalereslett.com/content/10/1/121