Mechanism of DNA Charge Transport (IMAGE) Arizona State University Caption The mechanism of DNA charge transport has been the focus of intensive investigation, though questions remain. In this graphic, current flowing through stacked Guanine DNA (right-hand side of image) is coherent and much stronger, while hopping behavior through alternating Guanine DNA is weaker (left-hand side of image). Guanine bases are highlighted in red with yellow surroundings. The process may be compared with lightning strikes, which follow different pathways to reach the land. Credit The Biodesign Institute at Arizona State University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.