Prediction of charge and dipole solitons in DNA molecules based on the behaviour of phosphate bridges as tunnel elements
Institut für Theoretische Festkörperphysik, Universität Karlsruhe, D-76128 Karlsruhe, Germany
2 School of Physics and Astronomy, Tel Aviv University - 69978 Tel Aviv, Israel
Accepted: 25 June 1998
Motivated by our view of chemical bonds as tunnel elements and by the studies of one-dimensional arrays of mesoscopic tunnel junctions, we investigate charge and dipole soliton dynamics in DNA molecules. We predict the existence of charge solitons in single-strand DNA and of charge and dipole solitons in double-strand DNA. We discuss possible roles of these excitations in DNA functioning, and propose specific experiments for testing our predictions.
PACS: 87.22.Fy – Active transport processes across biological membranes; intracellular electron transport; energy transduction (including photosynthesis and oxidative phosphorylation) / 72.80.Le – Polymers; organic compounds (including organic semiconductors)
© EDP Sciences, 1998