Fig. 2 (IMAGE) Osaka University Caption A schematic drawing of the electron transfer mechanism by ferredoxin that revealed in this study. Credit Ibaraki University Usage Restrictions Partially modified from Figure 6 of the original eLife article. No restrictions License Original 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.