IMAGE 2 (IMAGE) Nara Institute of Science and Technology Caption Hydrogenase catalyzes reversible oxidation of H2. Credit Shun Hirota Usage Restrictions This image may be used only with appropriate credit. 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.