Cytochrome c oxidase (CcO), the terminal oxidase of cell respiration, reduces molecular
oxygen (O2) in a reaction that is coupled with proton pumping. Since the discovery of this …

Cytochrome bd is a respiratory quinol: O2 oxidoreductase found in many prokaryotes,
including a number of pathogens. The main bioenergetic function of the enzyme is the …

Nitrogen is an essential element of life that needs to be assimilated in its most reduced form,
ammonium. On the other hand, nitrogen exists in a multitude of oxidation states and …

Cellular respiration has a long research history at the interface between biology, chemistry,
and physics. Research in this field spans the entire range from fundamental mechanistic and …

Nitric oxide reductase (NOR) is an iron-containing enzyme that catalyzes the reduction of
nitric oxide (NO) to generate a major greenhouse gas, nitrous oxide (N2O). Here, we report …

The heme-copper oxidases (HCOs) accomplish the key event of aerobic respiration; they
couple O2 reduction and transmembrane proton pumping. To gain new insights into the still …

Heme–copper oxygen reductases (HCO) reduce O2 to water being the last enzymatic
complexes of most aerobic respiratory chains. These enzymes promote energy conservation …

The structure of quinol-dependent nitric oxide reductase (qNOR) from G.
stearothermophilus, which catalyzes the reduction of NO to produce the major ozone …

The crystal structures of bacterial nitric oxide reductases (NOR) from Pseudomonas
aeruginosa and Geobacillus stearothermophilus were reported. The structural …

Recent advances in DNA sequencing technologies have provided unprecedented access
into the diversity of the microbial world. Herein we use the comparative genomic analysis of …