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2 edition of Nitrate reductase from Pseudomonas Aeruginosa. found in the catalog.

Nitrate reductase from Pseudomonas Aeruginosa.

Colin Godfrey

Nitrate reductase from Pseudomonas Aeruginosa.

by Colin Godfrey

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  • 35 Currently reading

Published by University of East Anglia in Norwich .
Written in English


Edition Notes

Thesis (Ph.D.)- University of East Anglia, School of Chemical Sciences 1983.

ID Numbers
Open LibraryOL13810382M

Conventional biological removal of nitrogen oxides (NO x) from flue gas has been severely restricted by the presence of paper presents an efficient alternative for NO x removal at varying oxygen levels using the newly isolated bacterial strain Pseudomonas aeruginosa PCN-2 which was capable of aerobic and anoxic denitrification. Interestingly, nitric oxide (NO), as the obligatory. Two different nitrate reductase complexes mediate nitrate reduction to nitrite in P. aeruginosa (4, 68), a plasma membrane-bound nitrate reductase complex encoded by the narK1K2GHJI operon and a periplasmic nitrate reductase encoded by napEFDABC.

Tap waters artificially contaminated with Pseudomonas aeruginosa, Escherichia coli, Legionella pneumophila, and Staphylococcus aureus could be sterilized by electrolysis at mA for 5 min. A high-density suspension (10(6) CFU/ml) of a spore forming bacterium, Bacillus subtilis was not completely sterilized by electrolysis at 50 mA up to Pseudomonas aeruginosa is a versatile soil bacterium and an important opportunistic pathogen. It is able to ing nitrate reductase and two transporters in response to oxygen limitation, nitrate and N-oxides (Schreiber et al., ). Expression of the nitrate responsive two-.

The mass ratio of nitrous oxide reductase to total protein in the soluble protein fraction of Pseudomonas aeruginosa P2 was highest in cells grown on nitrate, decreased in cells grown on N2O following the exhaustion of the initial charge of nitrate, and was nearly zero in cells exposed solely to N2O. Search term: periplasmic nitrate reductase protein NapE References. Genome-wide identification of Pseudomonas aeruginosa exported proteins using a consensus computational strategy combined with a laboratory-based PhoA fusion screen. Lewenza S, Gardy JL, Brinkman FS, Hancock RE.


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Nitrate reductase from Pseudomonas Aeruginosa by Colin Godfrey Download PDF EPUB FB2

Nitrate reductase has been purified 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 by:   Measurement of nitrate levels revealed that CF sputum contains sufficient nitrate to support significant P. aeruginosagrowth anaerobically, and mutational analysis revealed that the membrane-bound nitrate reductase is essential for P.

aeruginosaanaerobic growth in an in vitro CF sputum by: Respiratory nitrate reduction to nitrite can be mediated by two different nitrate reductase complexes in P. aeruginosa (Berks et al., ; Zumft, ): an inner membrane-bound nitrate reductase complex encoded by the narK1K2GHJI operon and a periplasmic nitrate reductase encoded by the napEFDABC operon.

NarGHI forms the core membrane-bound nitrate by:   Nitrate serves as a terminal electron acceptor under anaerobic conditions in Pseudomonas aeruginosa. Reduction of nitrate to nitrite generates a transmembrane proton motive force allowing ATP synthesis and anaerobic by:   In Pseudomonas aeruginosa, the narK 1 K 2 GHJI operon encodes two nitrate/nitrite transporters and the dissimilatory nitrate reductase.

The narK 1 promoter is anaerobically induced in the presence of nitrate by the dual activity of the oxygen regulator Anr and the N-oxide regulator Dnr in cooperation with the nitrate-responsive two-component regulatory system by:   Activities of nitrite and nitrate reductases as well as the efficiencies of denitrification carried out by Pseudomonas aeruginosa and Pseudomonas.

Pseudomonas aeruginosa PAO1, PA Cytoplasmic Cytoplasmic Membrane Periplasmic Outer Membrane Extracellular assimilatory nitrate reductase Product Name Confidence: Class 2 Synonyms: Evidence for Translation: Charge (pH 7) Kyte-Doolittle Hydrophobicity Value.

Abstract Nitric oxide (NO) reductase was solubilized by Triton X from the membrane fraction of Pseudomonas stutzeri ZoBell and purified fold to apparent electrophoretic homogeneity. The enzyme consisted of two polypeptides of Mr 38, associated with heme b and heme c.

Pseudomonas aeruginosa PAO1, PA (narG) Cytoplasmic Cytoplasmic Membrane Periplasmic Outer Membrane Extracellular Unknown View Roles of the narJ and narI gene products in the expression of nitrate reductase in Escherichia coli.

Sodergren EJ, Hsu PY, DeMoss JA J Biol Chem Nov 5;(31)   Citrate test +ve, Lysine +ve, Ornithine +ve, Urease +ve, Phenylalanine deamination -ve, Nitrate reduction -ve, H2S Production +ve, Glucose -ve, Adonitol-ve, Lactose -ve, Arabinose +ve, Sorbitol-ve. I am unable to identify which Pseudomonas Spp.

it is. Can you please help me in identifying the Pseudomonas Spp. Reply. Membrane nitrate reductase is required for P. aeruginosa virulence in C. elegans. Altered motility and biofilm formation in the nitrate reductase mutants led us to examine whether the mutants demonstrated diminished virulence.

The nematode C. elegans has been used as a surrogate host to examine the virulence of P. aeruginosa (1, 47, 60, 61). Scheme of the denitrification pathway in Pseudomonas aeruginosa. In denitrification, a form of anaerobic respiration, nitrate (NO 3 −) is reduced to molecular nitrogen (N 2) in four reductive steps, each catalyzed by a specific reductase, namely, nitrate reductase (NAR), nitrite reductase (NIR), NO reductase (NOR), and nitrous oxide reductase.

"Nitrite reductase from Pseudomonas aeruginosa: sequence of the gene and the protein." FEBS Lett (); PMID: Sodergren Sodergren EJ, Hsu PY, DeMoss JA (). "Roles of the narJ and narI gene products in the expression of nitrate reductase in Escherichia coli." J Biol Chem (31); PMID: Showing only F.

oxysporum contains nitrate reductase, which catalyzes the reduction of silver ions to AgNPs by utilizing NADPH as reducing agent. This nitrate reductase is an important enzyme for the reduction of silver ions to AgNPs (Marambio-Jones and Hoek, ).

The membrane-bound nitrate reductase consists of three polypeptides α, β, and γ. The large subunit (α) contains the cofactor, molybdopterin guanine dinucleotide, which is the active site of the enzyme.

The enzyme is anchored to the cytoplasmic membrane by the γ subunit. All three peptides are commonly encoded by the narGHJIgene cluster. Oxidative phosphorylation using multiple-component, membrane-associated protein complexes is the most effective way for a cell to generate energy.

Here, we systematically investigated the multiple protein-protein interactions of the denitrification apparatus of the pathogenic bacterium Pseudomonas aeruginosa. During denitrification, nitrate (Nar), nitrite (Nir), nitric oxide (Nor), and nitrous.

Pseudomonas aeruginosa PAO1, PA (nasT). Cytoplasmic Cytoplasmic Membrane. Expression of nitrite reductase gene (nirS) and related genes (A), biofilms (B), and c-di-GMP levels (C) in P. aeruginosa PA14 cultured with various concentrations of complestatin in absence or presence of nitrate.

Three independent experiments were performed, and the means ± standard deviation (SD) values are displayed as bars. Compensatory periplasmic nitrate reductase activity supports anaerobic growth of Pseudomonas aeruginosa PAO1 in the absence of membrane nitrate reductase.

Can J Microbiol – doi: /W Recently, an interactomic approach was used to determine the exact protein-protein interactions involved in the assembly of the denitrification apparatus of Pseudomonas aeruginosa.

Both subunits of the NO reductase NorBC, combined with the flavoprotein NosR, serve as a membrane-localized assembly platform for the attachment of the nitrate. Introduction. It is accepted that denitrification1, 2 is involved in the nitric oxide (NO) resistance of opportunistic pathogens.

Among denitrifiers, Pseudomonas aeruginosa is an extensively investigated organism because of its capability to colonize different environments and because it is an important cause of infection, especially in humans with compromised defense mechanisms (e.g., it is.tus of Pseudomonas aeruginosa.

Both subunits of the NO reductase NorBC, combined with the flavoprotein NosR, serve as a membrane-localized assembly platform for the attachment of the nitrate reductase NarGHI, the periplasmic nitrite reductase NirS via its maturation factor NirF and the N 2O reductase NosZ through NosR.

A nitrate transporter.nitrate reductase (13, 29). The membrane-bound enzyme has been studied in Pseudomonas aeruginosa (8), Paracoccus deni-trificans (6, 11), Pseudomonas stutzeri (7), Pseudomonas fluore-scens (18), and most extensively in Escherichia coli (13).

The membrane-bound nitrate reductase consists of three polypep-tides a, b, and g.