If the atmosphere of the early Earth was hydrogen-rich, 1 it is reasonable to think that
hydrogenases, the enzymes enabling cells to use molecular hydrogen, were probably …

The reaction takes place at a specialized metal center that dramatically increases the acidity
of H2 and leads to a heterolytic splitting of the molecule which is strongly accelerated by the …

The atmosphere of the early Earth is hypothesized to have been rich in reducing gases such
as hydrogen (H2). H2 has been proposed as the first electron donor leading to ATP …

Publisher Summary This chapter discusses the evolution of hydrogenase genes. All
hydrogenases studied with molecular biological techniques to date consist of at least two …

Hydrogenases (H2ases) catalyze the reversible oxidation of molecular hydrogen and play a
central role in microbial energy metabolism. Most of these enzymes are found in Archaea …

Recent physiological and ecological studies have challenged the long-held belief that
microbial metabolism of molecular hydrogen (H2) is a niche process. To gain a broader …

Recent research on the hydrogenase reactions has sought to probe beyond the information
that is provided by X-ray diffraction structures. The major challenge of locating …

Hydrogenase enzymes: Recent structural studies and active site models - ScienceDirect
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Hydrogenases are bacterial enzymes that catalyse the production or consumption of
hydrogen. They come in two forms, one of which—iron-only hydrogenase--has defied …

Thirty sequenced microbial hydrogenases are classified into six classes according to
sequence homologies, metal content and physiological function. The first class contains …