nitrite reductase

(redirected from Nitrite reductases)

nitrite reductase

an ENZYME that catalyses the conversion of nitrite to ammonium hydroxide.
References in periodicals archive ?
In many metalloenzymes such as cytochrome c oxidase (essential for mammalian life through respiratory requirements), nitrogenases and nitrite reductases (essential in view of their central position in the nitrogen cycle), hydrogenases (producers of molecular hydrogen - a candidate for a future alternative energy source), catalysis involves the controlled delivery of electrons and protons to the active site where substrate is utilised.
However, denitrifying organisms possess two types of functionally equivalent nitrite reductases, which are considered mutually exclusive to a single denitrifier, i.e., both reductases will not occur within one denitrifier.
Analysis of nitrite reductases (nirK and nirS) genes and cultivation reveal a depauperate community of denitrifying bacteria in the Black Sea suboxic zone.
Vertical distribution of nitrite reductases genes (nirS) in continental margin sediments of the Gulf of Mexico.
Design and evaluation of primers targeting genes encoding NO-forming nitrite reductase: implications for ecological inference of denitrifying communities.
Schleper, "Homologues of nitrite reductases in ammoniaoxidizing archaea: diversity and genomic context," Environmental Microbiology, vol.
The activation of [O.sub.2] for the monooxygenase reaction could also be achieved by nitric oxide (NO), the reaction product of nitrite reductase (NIR), which would result in [N.sub.2] gas production [2].
Francis, "Diversity, abundance and expression of nitrite reductase (nirK)-like genes in marine thaumarchaea," The ISME Journal, vol.
The genes encoding nitrite reductases of the cytochrome [cd.sub.1]-type (nirS) and copper-containing type (nirK) have been used as functional markers for exploring the ecology of denitrifying communities in the environment (Philippot and Hallin 2005; Kandeler et al.
The abundance of Cu-containing (nirK) and cytochrome [cd.sub.1]-type (nirS) nitrite reductase genes in DNA extracted from the water samples was used as a marker for denitrification (Philippot and Hallin 2005).
Prieme A, Braker B, Tiedje JM (2002) Diversity of nitrite reductase (nirK and nirS) gene fragments in forested upland and wetland soils.
indiensis nitrite reductase to NAD(P)H-nitrite reductases from Clostridium tetani, Bacillus cereus, and Heliobacterium modesticaldum (data not shown).