Results 321 to 330 of about 503,441 (367)

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 Prokaryotic Nitrate Reductases

2007
This chapter reviews the structural organization and bioenergetics of the four prokaryotic NO3 reductases and the eukaryotic enzyme and explores the possible mechanisms of NO3 transport. The membrane-bound NO3- reductase with the active site facing the cytoplasm is usually a three-subunit enzyme composed of NarGHI.
Richardson, David J., Van Spanning, Rob J.M., Ferguson, Stuart J.   +2 more
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Nitrate reductase regulation: Effects of nitrate and light on nitrate reductase mRNA accumulation

Molecular and General Genetics MGG, 1989
Regulation of nitrate reductase mRNA by light and nitrate was studied in barley seedlings using a partial cDNA clone as a probe. Nitrate reductase mRNA was detected in roots and leaves within 40 min after supplying nitrate to the roots and reached peak accumulation at 2 h in the roots and at 12 h in the leaves.
James M. Melzer, Andris Kleinhofs, Robert L. Warner   +2 more
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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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Nitrate reductase from Pseudomonas aeruginosa

Biochimica et Biophysica Acta, 1961
Abstract Nitrate reductase has been purified 115-fold from actively denitrifying cells of Pseudomonas aeruginosa. The enzyme is DPNH dependent and contains FAD, cytochrome c and molybdenum as functional components. Sulphydryl groups are involved in binding the FAD to the apo-enzyme.
C A, FEWSON, D J, NICHOLAS
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Nitrate reductase and cytochrome bnitrate reductase structural genes as parts of the nitrate reductase operon

Molecular and General Genetics MGG, 1981
The existence of a nitrate-reductase operon in the tryptophane region was deduced from the effects of prophage insertion in each of chlI and chlC genes and from transposition of the Mu-mediated host DNA fragments of F-prime. This operon appears to be polarized from chlC to chlI and the gene order in the region is trp -- chlI -- chlC -- purB.
V, Bonnefoy-Orth, M, Lepelletier, M C, Pascal, M, Chippaux   +3 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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Nitrate reductase for nitrate analysis in water

Environmental Chemistry Letters, 2006
Nitrate analysis in water is one of the most frequently applied methods in environmental chemistry. Current methods for nitrate are generally based on toxic substances. Here, we show that a viable alternative method is to use the enzyme nitrate reductase.
Wilbur H. Campbell, Pengfei Song, Guillaume G. Barbier   +2 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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