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Documenti fondamentali

N7265

Sigma-Aldrich

Nitrate Reductase (NAD[P]H) from Aspergillus niger

lyophilized powder, ≥300 units/g solid

Sinonimo/i:

NAD(P)H:Nitrate oxidoreductase

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About This Item

Numero CAS:
Classificazione EC (Enzyme Commission):
Numero MDL:
Codice UNSPSC:
12352204
NACRES:
NA.54

Stato

lyophilized powder

Livello qualitativo

Attività specifica

≥300 units/g solid

Condizioni di spedizione

wet ice

Temperatura di conservazione

−20°C

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Descrizione generale

Nitrate reductase (NAD[P]H) is expressed in variety of organisms including bacteria, fungi, algae, and higher plants which have capacity to use nitrate as their sole source of nitrogen.Experimental studies show that nitrate reductase (NAD[P]H) is 180,000Daltons.

Azioni biochim/fisiol

Nitrate Reductase (NAD[P]H) catalyzes the reduction of nitrate to nitrite. In addition, it also catalyzes the reduction of NADPH-cytochrome c, FADH2-nitrate. Nitrate reductase also has reduced methyl viologen-nitrate reductase activities.

Avvertenza

light and moisture sensitive

Definizione di unità

One unit will reduce 1.0 μmole of nitrate per min in the presence of β-NADPH at pH 7.5 at 25 °C.

Pittogrammi

Health hazard

Avvertenze

Danger

Indicazioni di pericolo

Classi di pericolo

Resp. Sens. 1

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

Eyeshields, Gloves, type N95 (US)


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G Unden et al.
Molecular microbiology, 25(2), 205-210 (1997-07-01)
The FNR (fumarate and nitrate reductase regulation) protein of Escherichia coli is an oxygen-responsive transcriptional regulator required for the switch from aerobic to anaerobic metabolism. In the absence of oxygen, FNR changes from the inactive to the active state. The
R C Chiang et al.
Molecular microbiology, 24(5), 1049-1060 (1997-06-01)
The Escherichia coli NarX, NarQ, NarL and NarP proteins comprise a two-component regulatory system that controls the expression of many anaerobic electron-transport and fermentation-related genes in response to nitrate and nitrite. Either of the two sensor-transmitter proteins, NarX and NarQ
W H Campbell
Cellular and molecular life sciences : CMLS, 58(2), 194-204 (2001-04-06)
Pyridine nucleotide-dependent nitrate reductases (NRs; EC 1.6.6.1-3) are molybdenum-containing enzymes found in eukaryotic organisms which assimilate nitrate. NR is a homodimer with an approximately 100 kDa polypeptide which folds into stable domains housing each of the enzyme's redox cofactors--FAD, heme-Fe
M A de la Rosa et al.
European journal of biochemistry, 106(1), 249-256 (1980-05-01)
Assimilatory nitrate reductase [NAD(P)H] (EC 1.6.6.2) from Ankistrodesmus braunii has been purified to homogeneity by a simple procedure that utilizes as the main step affinity chromatography on Blue-Sepharose. The best enzyme preparation has a specific activity of 61.25 units/mg protein.
J Miyazaki et al.
Molecular & general genetics : MGG, 228(3), 329-334 (1991-09-01)
Barley (Hordeum vulgare L.) has both NADH-specific and NAD(P)H-bispecific nitrate reductases. Genomic and cDNA clones of the NADH nitrate reductase have been sequenced. In this study, a genomic clone (pMJ4.1) of a second type of nitrate reductase was isolated from

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