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Key Documents

N9284

Sigma-Aldrich

Nitroreductase from Escherichia coli

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≥90% (SDS-PAGE), recombinant, expressed in E. coli

Sinónimos:

NTRA

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About This Item

MDL number:
UNSPSC Code:
12352204
NACRES:
NA.54

recombinant

expressed in E. coli

Quality Level

assay

≥90% (SDS-PAGE)

form

lyophilized powder

specific activity

≥100 units/mL

mol wt

monomer 24000

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Waste Prevention
Safer Solvents and Auxiliaries
Design for Energy Efficiency
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sustainability

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UniProt accession no.

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shipped in

wet ice

storage temp.

−20°C

Gene Information

Escherichia coli K12 ... nfsB(945483)

General description

Nitroreductase is a flavoprotein and is encoded by the NfsB gene. It comprises a dimer, with 217 amino acids and active site in each subunit. The structure has FMN and the substrate bound to the enzyme.

Application

Nitroreductase from Escherichia coli has been used in the conjugation generation with pig liver esterase (PLE). It has also been used in chemiluminescence response studies with probes HyCL-3 and HyCL-4-AM in rat liver microsomes.

Biochem/physiol Actions

Nitroreductase (NTR) catalyzes the reduction of nitroaromatic substrates and quinones. The mutant F124K of NTR is useful in cancer therapy and improves sensitization of drug CB1954.
Nitroreductase increases the sensitivity of organisms to nitro-containing drugs such as metronidazole by converting the nitro group to a cytotoxic nitro radical.
Nitroreductases can play a crucial role in redox systems via NADPH or NADH as a reductant.
Shows ability to reduce quinines. Enzyme for activating prodrugs in antibody directed enzyme prodrug therapy.

Physical properties

Lyophilized powder containing PBS. Does not contain BSA as excipient

Unit Definition

One unit will reduce one μmole of Cytochrome C per minute in the presence of Menadione and NADH at pH 7.4 at 37 °C.

Preparation Note

Produced using animal component-free materials.

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


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Chih-Chen Chen et al.
Food chemistry, 135(4), 2708-2713 (2012-09-18)
Nitroreductases (Nrs) play important roles in redox system via NADPH or NADH as a reductant. A TcNr cDNA encoding a putative Nr was cloned from Taiwanofungus camphorata. A 3-D structural model of the TcNr has been created based on the
Dual enzyme-responsive ?turn-on? fluorescence sensing systems based on in situ formation of 7-hydroxy-2-iminocoumarin scaffolds
Debieu, S and Romieu A
Organic & Biomolecular Chemistry, 13(41), 10348-10361 (2015)
Generation of Escherichia coli nitroreductase mutants conferring improved cell sensitization to the prodrug CB1954
Grove JI, et al.
Cancer research, 63(17), 5532-5537 (2003)
Mckayla Stevens et al.
Bioorganic & medicinal chemistry, 28(22), 115710-115710 (2020-10-03)
In two previous studies, we identified compound 1 as a moderate GroEL/ES inhibitor with weak to moderate antibacterial activity against Gram-positive and Gram-negative bacteria including Bacillus subtilis, methicillin-resistant Staphylococcus aureus, Klebsiella pneumonia, Acinetobacter baumannii, and SM101 Escherichia coli (which has
Bharat Bhushan et al.
Biochemical and biophysical research communications, 322(1), 271-276 (2004-08-18)
Previously, we reported that a salicylate 1-monooxygenase from Pseudomonas sp. ATCC 29352 biotransformed CL-20 (2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaaza-isowurtzitane) (C(6)H(6)N(12)O(12)) and produced a key metabolite with mol. wt. 346 Da corresponding to an empirical formula of C(6)H(6)N(10)O(8) which spontaneously decomposed in aqueous medium to

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