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C1622

Sigma-Aldrich

Cyclohexanone Monooxygenase from Acinetobacter sp.

≥12 U/mL, ammonium sulfate suspension, recombinant, expressed in E. coli

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About This Item

Numéro CAS:
Numéro de classification (Commission des enzymes):
Numéro MDL:
Code UNSPSC :
12352204
Nomenclature NACRES :
NA.54

Produit recombinant

expressed in E. coli

Niveau de qualité

Forme

ammonium sulfate suspension

Concentration

≥12 U/mL

Température de stockage

−20°C

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Application

Cyclohexanone monooxygenase has been used in a study that cloned and overexpressed the 2-oxo-Δ(3)-4,5,5-trimethylcyclopentenylacetyl-CoA monooxygenase (OTEMO) in Escherichia coli. Cyclohexanone monooxygenase has also been used in a study that investigated the effects of structural modification of the cell wall on the biotransformation capability by recombinant Corynebacterium glutamicum cells.

Actions biochimiques/physiologiques

Purified cyclohexanone monooxygenase has a molecular weight of 59,000 Da. It is a versatile oxygenation catalyst. The enzyme uses the bound FAD-4a-OOH oxygenating intermediate to initiate transfer of oxygen to electrophilic substrate sites. The reaction consequently yields the corresponding sulfoxide and selenoxide products. This enzyme is also capable of oxygenating at nitrogen, trivalent phosphorus, and boron sites in boronic acids. Hence, it is one of the most broad-based flavoprotein oxygenases known.

Définition de l'unité

1 unit corresponds to the amount of enzyme which catalyzes the cyclohexanone-stimulated oxidation of 1 μmol of NADPH per minute at pH 9.0 and 30 °C

Forme physique

Suspension in 80% saturated ammonium sulfate, 20 mM K-Na-phosphate buffer pH 7, 3.5 mM 1,4-Dithioerythritol (DTE)

Pictogrammes

Health hazard

Mention d'avertissement

Danger

Mentions de danger

Conseils de prudence

Classification des risques

Resp. Sens. 1

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 1

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable


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Consulter la Bibliothèque de documents

Y C Chen et al.
Journal of bacteriology, 170(2), 781-789 (1988-02-01)
The gene coding for cyclohexanone monooxygenase from Acinetobacter sp. strain NCIB 9871 was isolated by immunological screening methods. We located and determined the nucleotide sequence of the gene. The structural gene is 1,626 nucleotides long and codes for a polypeptide
Hannes Leisch et al.
Applied and environmental microbiology, 78(7), 2200-2212 (2012-01-24)
A dimeric Baeyer-Villiger monooxygenase (BVMO) catalyzing the lactonization of 2-oxo-Δ(3)-4,5,5-trimethylcyclopentenylacetyl-coenzyme A (CoA), a key intermediate in the metabolism of camphor by Pseudomonas putida ATCC 17453, had been initially characterized in 1983 by Ougham and coworkers (H. J. Ougham, D. G.
D Sheng et al.
Biochemistry, 40(37), 11156-11167 (2001-09-12)
Cyclohexanone monooxygenase (CHMO), a bacterial flavoenzyme, carries out an oxygen insertion reaction on cyclohexanone to form a seven-membered cyclic product, epsilon-caprolactone. The reaction catalyzed involves the four-electron reduction of O2 at the expense of a two-electron oxidation of NADPH and
Iakov Polyak et al.
Journal of the American Chemical Society, 134(5), 2732-2741 (2012-01-14)
We report a combined quantum mechanical/molecular mechanical (QM/MM) study on the mechanism of the enzymatic Baeyer-Villiger reaction catalyzed by cyclohexanone monooxygenase (CHMO). In QM/MM geometry optimizations and reaction path calculations, density functional theory (B3LYP/TZVP) is used to describe the QM
Ji-Yeong Yun et al.
Bioprocess and biosystems engineering, 35(1-2), 211-216 (2011-09-13)
The effects of structural modification of cell wall on the biotransformation capability by recombinant Corynebacterium glutamicum cells, expressing the chnB gene encoding cyclohexanone monooxygenase of Acinetobacter calcoaceticus NCIMB 9871, were investigated. Baeyer-Villiger oxygenation of 2-(2'-acetoxyethyl) cyclohexanone (MW 170 Da) into

Articles

Instructions for working with enzymes supplied as ammonium sulfate suspensions

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