New X-ray Spectroscopy Explores Hydrogen-generating Catalyst

Using a newly developed technique, researchers from Japan, Germany and the U.S. have identified a key step in production of hydrogen gas by a bacterial enzyme. Understanding these reactions could be important in developing a clean-fuel economy powered by hydrogen.

The single-celled green alga Chlamydomonas reinhardtii has an iron-based enzyme that can generate hydrogen gas. (JGI)

The team studied hydrogenases – enzymes that catalyze production of hydrogen from two widely distributed organisms: Chlamydomonas reinhardtii, a single-cell algae and Desulfovibrio desulfuricans, a bacterium.

In both cases, their hydrogenase enzymes have an active site with two iron atoms.