Highly diverse nirK genes comprise two major clades that harbour ammonium-producing denitrifiers [PDF]
, 2016 Background: Copper dependent nitrite reductase, NirK, catalyses the key step in denitrification, i.e. nitrite reduction to nitric oxide. Distinct structural NirK classes and phylogenetic clades of NirK-type denitrifiers have previously been observed ...
Decleyre, Helen +3 more
core +3 more sources
Structure and molecular evolution of multicopper blue proteins
Biomolecular Concepts, 2010 The multicopper blue protein family, which contains cupredoxin-like domains as a structural unit, is one of the most diverse groups of proteins. This protein family is divided into two functionally different types of enzymes: multicopper oxidase and ...
Komori Hirofumi, Higuchi Yoshiki
doaj +1 more source
La production de nitrites lors de la dénitrification des eaux usées par biofiltration - Stratégie de contrôle et de réduction des concentrations résiduelles [PDF]
Revue des Sciences de l'Eau, 31(1), 2018, 61-73, 2017 The recent popularity of post-denitrification processes in the greater Paris area wastewater treatment plants has caused a resurgence of the presence of nitrite in the Seine river. Controlling the production of nitrite during the post-denitrification has thus become a major technical issue.
arxiv +1 more source
Bacterial nitrate assimilation: gene distribution and regulation [PDF]
, 2011 In the context of the global nitrogen cycle, the importance of inorganic nitrate for the nutrition and growth of marine and freshwater autotrophic phytoplankton has long been recognized.
Andrew J. Gates +44 more
core +1 more source
Nitrite Reductase Activity of Cytochrome c [PDF]
Journal of Biological Chemistry, 2008 Small increases in physiological nitrite concentrations have now been shown to mediate a number of biological responses, including hypoxic vasodilation, cytoprotection after ischemia/reperfusion, and regulation of gene and protein expression. Thus, while nitrite was until recently believed to be biologically inert, it is now recognized as a potentially
Michael D. Font +7 more
openaire +3 more sources
Nitrite accumulation during storage of tomato fruit as prevented by hydrogen gas
International Journal of Food Properties, 2019 The adverse effects of intake nitrite upon human health are well known. However, eating fruits and vegetables is one of the main pathways to absorb nitrite because of nitrogen assimilation in plants.
Yihua Zhang +8 more
doaj +1 more source
Resolution of Key Roles for the Distal Pocket Histidine in Cytochrome c Nitrite Reductases [PDF]
, 2015 Cytochrome c nitrite reductases perform a key step in the biogeochemical N-cycle by catalyzing the six-electron reduction of nitrite to ammonium. These multi-heme cytochromes contain a number of His/His ligated c-hemes for electron transfer and a ...
Burlat, Benedicte +7 more
core +4 more sources
Anti-oxidant effect of nitrite in the pancreatic islets of type 2 diabetic male rats [PDF]
Iranian Journal of Basic Medical Sciences, 2023 Objective(s): Nitrite, a nitric oxide (NO) donor, increases insulin secretion from pancreatic islets and has positive metabolic effects in type 2 diabetes (T2D). Here, we test the hypothesis of whether nitrite-induced insulin secretion is due to blunting
Asghar Ghasemi +3 more
doaj +1 more source
Biotransformation of explosives by the old yellow enzyme family of flavoproteins [PDF]
, 2004 Several independent studies of bacterial degradation of nitrate ester explosives have demonstrated the involvement of flavin-dependent oxidoreductases related to the old yellow enzyme (OYE) of yeast. Some of these enzymes also transform the nitroaromatic
Bruce, N.C. +3 more
core +2 more sources
Distribution of Denitrification among Haloarchaea: A Comprehensive Study
Microorganisms, 2021 Microorganisms from the Halobacteria class, also known as haloarchaea, inhabit a wide range of ecosystems of which the main characteristic is the presence of high salt concentration.
Jose María Miralles-Robledillo +5 more
doaj +1 more source