Results 261 to 270 of about 49,593 (301)

Nitrate reductases inEscherichia coli

Antonie van Leeuwenhoek, 1994
Escherichia coli expresses two different membrane-bound respiratory nitrate reductases, nitrate reductase A (NRA) and nitrate reductase Z (NRZ). In this review, we compare the genetic control, biochemical properties and regulation of these two closely related enzyme systems.
V, Bonnefoy, J A, Demoss
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Histochemical localization of nitrate reductase

Histochemistry, 1981
NADH-dependent nitrate reductase (E.C. 1.6.6.1) was ultrastructurally localized in norflurazon-treated and control soybean cotyledons [Glycine max (L.) Merr.] by a method based upon the increase in osmiophilia due to the formation of an azo dye. The reaction product was observed in small vesicles throughout the cytoplasm.
K C, Vaughn, S O, Duke
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Reductive activation of nitrate reductases

Dalton Transactions, 2005
Protein film voltammetry of Paracoccus pantotrophus respiratory nitrate reductase (NarGH) and Synechococcus elongatus assimilatory nitrate reductase (NarB) shows that reductive activation of these enzymes may be required before steady state catalysis is observed.
Field, Sarah J., Thornton, Nicholas P., Anderson, Lee J., Gates, Andrew J., Reilly, Ann, Jepson, Brian J. N., Richardson, David J., George, Simon J., Cheesman, Myles R., Butt, Julea N.   +9 more
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Activation of nitrate reductase by oxidation

Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1972
Abstract The activation of the inactive form of the nitrate reductase (NADH: nitrate oxidoreductase, EC 1.6.6.1) present in cell-free extracts of Chlorella vulgaris Beijerinck requires an oxidizing agent. Ferricyanide causes conversion of the proenzyme to active enzyme within a few minutes, even at 0°C. Molecular oxygen causes a slow activation which
K, Jetschmann, L P, Solomonson, B, Vennesland   +2 more
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[Induced activity of nitrate reductase by nitrate and cloning of nitrate reductase gene].

Sheng wu gong cheng xue bao = Chinese journal of biotechnology, 2010
Excessive nitrate accumulated in plants affects vegetable quality severely and excessive nitrate ingestion would do harm to human health. Assimilatory NADH: nitrate reductase (NR, EC 1.6.6.1), a complex Mo-pterin-, cytochrome b(557)- and FAD-containing protein, catalyzes the regulated and rate-limiting step in the utilization of inorganic nitrogen by ...
Li-Qun, Wang, Yong, Wang, Ying, Dong, Wen-Bing, Wang   +3 more
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Bacterial dimethyl sulphoxide reductases and nitrate reductases

Biochemical Society Transactions, 1991
interactions which can be done when more structural information is available, but they do provide order of magnitude estimates of interaction strengths. Evidently, considerable rearrangement of charge driven by reduction significantly raises the effective dielectric. It seems likely that centres S-2 and FR-2 are apparently low-potential clusters merely
McEwan, Alastair G., Benson, Neil, Bonnett, Tracey C., Hanlon, Steven P., Ferguson, Stuart J., Richardson, David J., Jackson, J. Baz   +6 more
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The bacterial nitrate reductases: EPR studies on nitrate reductase A from Micrococcus denitrificans

Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1972
EPR studies on nitrate reductase indicate at 80 °K a signal at g=1.985 and g=2.045 attributable to Mo(V). At 15 °K a signal is observed at g=2.016 due to Fe(III) in an unknown symmetry. The reaction of nitrate reductase with nitrate, nitrite or azide results in changes of the Mo(V) signal.
P, Forget, D V, Dervartanian
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Evolution of the soluble nitrate reductase: defining the monomeric periplasmic nitrate reductase subgroup

Biochemical Society Transactions, 2006
Bacterial nitrate reductases can be classified into at least three groups according to their localization and function, namely membrane-bound (NAR) or periplasmic (NAP) respiratory and cytoplasmic assimilatory (NAS) enzymes. Monomeric NASs are the simplest of the soluble nitrate reductases, although heterodimeric NASs exist, and a common structural ...
Jepson, B. J. N., Marietou, A., Mohan, S., Cole, J. A., Butler, C. S., Richardson, D. J.   +5 more
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Molecular evolution of nitrate reductase genes

Journal of Molecular Evolution, 1996
To understand the evolutionary mechanisms and relationships of nitrate reductases (NRs), the nucleotide sequences encoding 19 nitrate reductase (NR) genes from 16 species of fungi, algae, and higher plants were analyzed. The NR genes examined show substantial sequence similarity, particularly within functional domains, and large variations in GC ...
J, Zhou, A, Kleinhofs
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The Nitrate Reductase System

1984
It has been proposed by Klemm and Ninnemann [29] that nitrate reductase (NR) may act as a photoreceptor in blue light-stimulated conidiation of Neurospora crassa (carotenoid-less mutant al-2 bd). Nitrate reduction and conidiation appear to be correlated in some specific ways: Hochberg and Sargent [19] and Weiss and Turian [61] reported that conidiation
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