Heme–copper oxidases (HCO), nitric oxide reductases (NOR), and sulfite reductases (SiR)
catalyze the multi-electron and multi-proton reductions of O2, NO, and SO32−, respectively …

The biological denitrification process is crucial for removing nitrogen and reducing nitrous
oxide (N2O) emissions. To investigate the mechanism of action of key enzymes in the …

Quinol-dependent nitric oxide reductases (qNORs) are considered members of the
respiratory heme-copper oxidase superfamily, are unique to bacteria, and are commonly …

In recent years there have been paradigm shifts in our understanding of the diversity of
copper-containing nitrite reductases (CuNiRs) found in nature, as genomic mining revealed …

Metalloproteins comprise at least a third of all proteins that utilize redox properties of
transition metals on their own or as parts of cofactors. The development of third generation …

Nitric oxide (NO) is generated in some biological systems. Due to its radical character, it
exhibits high reactivity, but biological system can manage NO without sustaining any …

Nitric oxide reductases (NORs) have a central role in denitrification, detoxification of nitric
oxide (NO) in host-pathogen interactions, and NO-mediated cell-cell signaling. In this study …

Cytochrome c oxidase (CcO), a terminal oxidase in the respiratory chain, catalyzes the
reduction of O 2 to water coupled with the proton pump across the membrane. Mitochondrial …

The crystal structure of bovine cytochrome c oxidase (CcO) shows a sodium ion (Na+)
bound to the surface of subunit I. Changes in the absorption spectrum of heme a caused by …

Neisseria meningitidis (Nm) uses a polysaccharide capsule to protect itself and escape the
immune system. Polysaccharide transporters are complexes inserted into bacterial …