| This technology is based on combining the photosynthetic capacity of chlorophyll from vegetable cells and the hydrogenase activity of an enzyme of bacterial origin. |
| Two nickel-containing enzymes, the hydrogen uptake hydrogenase and urease, are required for colonization and persistence in the stomach. |
| Among 127 sequences were classified to possess hydrogenase activity, and 26 sequences were matched with carbohydrate-degrading enzymes. |
| The hydrogenase was purified from the crude membrane fraction according to the reported method. |
| It is now known to be responsible for a set of genes, including those for formate hydrogenase. |
| However, a specific enzyme, hydrogenase, may lead to non-negligible H2 formation even within natural systems. |
