Results 231 to 240 of about 13,465 (259)

Structure of cytochrome c nitrite reductase

Nature, 1999
The enzyme cytochrome c nitrite reductase catalyses the six-electron reduction of nitrite to ammonia as one of the key steps in the biological nitrogen cycle, where it participates in the anaerobic energy metabolism of dissimilatory nitrate ammonification.
Einsle, Oliver, Messerschmidt, Albrecht, Stach, Petra, Bourenkov, Gleb P., Bartunik, Hans D., Huber, Robert, Kroneck, Peter M. H.   +6 more
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Octaheme nitrite reductases: Structure and properties

Biochemistry (Moscow), 2012
Octaheme oxidoreductases are widespread among various bacterial taxa involved in the biogeochemical nitrogen cycle. The evolution of octaheme oxidoreductases of the nitrogen cycle from the evolutionarily more ancient pentaheme nitrite reductases was accompanied by changes in function from reduction of nitrogen oxides to their oxidation under changing ...
T V, Tikhonova, A A, Trofimov, V O, Popov   +2 more
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Studies on nitrite reductase in barley

Planta, 1973
Nitrite reductase from barley seedlings was purified 50-60 fold by ammonium sulphate precipitation and gel filtration. No differences were established in the characteristics of nitrite reductases isolated in this way from either leaf or root tissues.
W F, Bourne, B J, Miflin
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Stoichiometry of nitrite reduction catalyzed by Pseudomonas aeruginosa nitrite-reductase

Biochimie, 1984
The stoichiometry of the reduction of nitrite catalyzed by Pseudomonas aeruginosa nitrite-reductase (cytochrome cd1) has been shown to yield nitrous oxide as the final product. Gas chromatography experiments demonstrated that nitric oxide is also formed as a free intermediate. A sequential formation of NO and N2O is discussed as opposed to the parallel
P, Bessières, Y, Henry
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[23] Ferredoxin-nitrite reductase

1980
Publisher Summary This chapter describes ferredoxin-nitrite reductase. Ferredoxin-nitrite reductase (EC 1.7.7.1) is the second enzyme component of the photosynthetic nitrate-reducing system. It was first identified as a ferredoxin-dependent chloroplast enzyme which catalyzes the 6-electron reduction of nitrite to ammonia.
JoséM. Vega, Jacobo Cárdenas, Manuel Losada   +2 more
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Functional domains of assimilatory nitrate reductases and nitrite reductases

Trends in Biochemical Sciences, 1990
Biochemical investigation of nitrate assimilation enzymes spans the past four decades. With the molecular cloning of genes for nitrate reductases and nitrite reductases, exciting new prospects are developing for the study of these enzymes. As large, complex enzymes with multiple redox centers, these two types of reductases should help us gain ...
W H, Campbell, K R, Kinghorn
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Bidirectional Catalysis by Copper-Containing Nitrite Reductase

Biochemistry, 2004
The copper-containing nitrite reductase from Alcaligenes faecalis S-6 was found to catalyze the oxidation of nitric oxide to nitrite, the reverse of its physiological reaction. Thermodynamic and kinetic constants with the physiological electron donor pseudoazurin were determined for both directions of the catalyzed reaction in the pH range of 6-8.
Wijma, H.J., Canters, G.W., Vries, S. de, Verbeet, M.P.   +3 more
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Inheritance of Nitrite Reductase

1981
Although nitrite reductase (NiR) resides primarily in the chloroplast (Dalling et al., 1972; Lips et al., 1972; Miflin, 1974; Ritenour et al., 1967; Washitani et al., 1977) it has not been determined whether this enzyme is coded for by chloroplast DNA or by nuclear DNA.
S. Heath-Pagliuso, R. C. Huffaker
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Nitrite Reductase and Biosensors Development

Bioremediation Science and Technology Research, 2015
Nitrite ions have emerged as one of the major problems in environmental and pollution issuesnowadays. Food products are the major source of these ions to preserve color. However, thereis a maximum permissible limit (MPL) for the use of nitrite in food. A lot of works in theliterature have been carried out on nitrite quantification and most of them are ...
Siti Nur Syazni Mohd Zuki, Nina Suhaity Azmi, Ling Ling Tan   +2 more
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Regulation of nitrite uptake and nitrite reductase expression in Chlamydomonas reinhardtii

Biochimica et Biophysica Acta (BBA) - General Subjects, 1991
Expression of nitrite uptake and nitrite reductase activities has been studied in Chlamydomonas reinhardtii under different nutritional conditions. Both activities were expressed at a low level in derepressed cells (with no nitrogen source) and at a high level in induced cells (with nitrate or nitrite).
A, Galván, F, Córdoba, J, Cárdenas, E, Fernández   +3 more
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