Nickel is an essential nutrient for selected microorganisms where it participates in a variety
of cellular processes. Many microbes are capable of sensing cellular nickel ion …

The modular evolutionary origin of NADH: ubiquinone oxidoreductase (complex I) provides
useful insights into its functional organization. Iron–sulfur cluster N2 and the PSST and 49 …

Genome analyses and the resolution of three–dimensional structures have provided
evidence in recent years for hitherto unexpected family relationships between redox proteins …

Formate hydrogen lyase from Escherichia coli is a membrane-bound complex that oxidizes
formic acid to carbon dioxide and molecular hydrogen. Under anaerobic growth conditions …

Two gene clusters encoding similar formate dehydrogenases (FDH) were identified in
Eubacterium acidaminophilum. Each cluster is composed of one gene coding for a catalytic …

The realization that fossil fuel reserves are limited and their adverse effect on the
environment has forced us to look into alternative sources of energy. Hydrogen is a strong …

Background Hydrogenases catalyze the simplest of all chemical reactions: the reduction of
protons to molecular hydrogen or vice versa. Cyanobacteria can express an uptake, a …

In the present study, we report the identification of an operon with six coding regions for a
multisubunit membrane-bound [NiFe] hydrogenase in the genome of Desulfovibrio gigas …

The hypA-E operon is involved in the maturation of all three NiFe hydrogenases in
Escherichia coli. Two hyp promoters have been described; a σ54-dependent promoter …

Escherichia coli growing on glucose under anaerobic conditions at slightly alkaline pH
carries out a mixed-acid fermentation resulting in the production of formate among the other …