Gases like H2, N2, CO2, and CO are increasingly recognized as critical feedstock in “green”
energy conversion and as sources of nitrogen and carbon for the agricultural and chemical …

Nitrogenase is the only enzyme capable of reducing N2 to NH3. This challenging reaction
requires the coordinated transfer of multiple electrons from the reductase, Fe-protein, to the …

Nitrogenases are responsible for biological nitrogen fixation, a crucial step in the
biogeochemical nitrogen cycle. These enzymes utilize a two-component protein system and …

Biological nitrogen fixation is catalyzed by the enzyme nitrogenase, which facilitates the
cleavage of the relatively inert triple bond of N2. Nitrogenase is most commonly associated …

Transition metal–sulfur (M–S) compounds are an indispensable means for biological
systems to convert N2 into NH3 (biological N2 fixation), and these may have emerged by …

The phylogeny of nitrogenase has only been analyzed using the structural proteins NifHDK.
As nifHDKENB has been established as the minimum number of genes necessary for in …

The ubiquity, structural variation, and functional diversity of iron-sulfur (Fe-S) clusters in
biological environments has long fascinated scientists. In nature, Fe-S clusters form a variety …

The nitrogenase enzymes are responsible for all biological nitrogen reduction. How this is
accomplished at the atomic level, however, has still not been established. The molybdenum …

Photofermentation (PF) is a quite well explored and favourable route for production of the
clean biofuel hydrogen (H 2). Although it has been considered as a promising candidate …

Heterocysts are specialized cells that differentiate in the filaments of heterocystous
cyanobacteria. Their role is to maintain a microoxic environment for the nitrogenase enzyme …