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C8868

Sigma-Aldrich

Cholesterol Oxidase from Brevibacterium

lyophilized powder, ≥50 units/mg protein, recombinant, expressed in E. coli

Sinónimos:

Cholesterol: oxygen oxidoreductase

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About This Item

Número de CAS:
9028-76-6
Comisión internacional de enzimas:
1.1.3.6 (BRENDA, IUBMB)
EC Number:
232-842-1
MDL number:
MFCD00130783
UNSPSC Code:
12352204
NACRES:
NA.54

recombinant

expressed in E. coli

form

lyophilized powder

specific activity

≥50 units/mg protein

mol wt

64 kDa

composition

Protein, ≥15% biuret

storage temp.

−20°C

Application

Cholesterol oxidase has been used in a study to demonstrate that microheterogeneity in hydrophobic-hydrophilic block copolymer systems can be exploited for immobilizing enzymes and to carry out enzymatic reactions. Cholesterol oxidase has also been used in a study that concluded that amphipaths that activate cholesterol might be useful in treating NPC disease.
Cholesterol oxidase is used to determine serum cholesterol. The enzyme also finds application in the microanalysis of steroids in food samples and in distinguishing 3-ketosteroids from 3β-hydroxysteroids. Transgenic plants expressing cholesterol oxidase are being investigated in the fight against the cotton boll weevil. CHOD has also been used as a molecular probe to elucidate cellular membrane structures.

Biochem/physiol Actions

Cholesterol oxidase (CHOD) is a monomeric flavoprotein containing FAD that catalyzes the first step in cholesterol catabolism. This bifunctional enzyme oxidizes cholesterol to cholest-5-en-3-one in an FAD-requiring step, which is then isomerized to cholest-4-en-3-one with the release of H2O2.

Physical properties

Type II cholesterol oxidase containing FAD cofactor covalently linked to the enzyme.

Unit Definition

One unit will convert 1.0 μmole of cholesterol to 4-cholesten-3-one per min at pH 7.5 at 25 °C. Note: 4-cholesten-3-one may undergo isomerization.

Physical form

Supplied as a lyophilzed powder containing sucrose

pictograms

Health hazard
GHS08

signalword

Danger

hcodes

H334

Hazard Classifications

Resp. Sens. 1

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Certificados de análisis (COA)

Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»

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Block copolymer microdomains: a novel medium for enzymatic reactions
Gupte, A., et al.
Biotechnology Progress, 7, 348-354 (2012)
Meihe Zhang et al.
Biosensors & bioelectronics, 32(1), 288-292 (2011-12-31)
A novel cholesterol biosensor was prepared based on gold nanoparticles-catalyzed luminol electrogenerated chemiluminescence (ECL). Firstly, l-cysteine-reduced graphene oxide composites were modified on the surface of a glassy carbon electrode. Then, gold nanoparticles (AuNPs) were self-assembled on it. Subsequently, cholesterol oxidase
Laura Caldinelli et al.
The Journal of biological chemistry, 280(24), 22572-22581 (2005-04-09)
Cholesterol oxidase from Brevibacterium sterolicum is a monomeric flavoenzyme catalyzing the oxidation and isomerization of cholesterol to cholest-4-en-3-one. This protein is a class II cholesterol oxidases, with the FAD cofactor covalently linked to the enzyme through the His(69) residue. In
Porntip H Lolekha et al.
Clinica chimica acta; international journal of clinical chemistry, 339(1-2), 135-145 (2003-12-23)
Cholesterol oxidase is used for the determination of serum cholesterol. It can be derived from Streptomyces, Pseudomonas fluorescens, Cellulomonas, and Brevibacterium. This study compared the performance characteristics of four enzymes in the endpoint cholesterol determination. Using the Mega analyzer, we
Tania Pomili et al.
Biosensors, 11(11) (2021-11-26)
In this study, we describe a monolithic and fully integrated paper-based device for the simultaneous detection of three prognostic biomarkers in saliva. The pattern of the proposed multiplexed device is designed with a central sample deposition zone and three identical
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Protocolos

Enzymatic Assay of Cholesterol Oxidase

Enzymatic activity assay for cholesterol oxidase, excluding specific product numbers, providing guidelines for accurate cholesterol oxidase assays.

Enzymatic Assay of Cholesterol Oxidase

Enzymatic activity assay for cholesterol oxidase, excluding specific product numbers, providing guidelines for accurate cholesterol oxidase assays.

Enzymatic Assay of Cholesterol Oxidase

Enzymatic activity assay for cholesterol oxidase, excluding specific product numbers, providing guidelines for accurate cholesterol oxidase assays.

Enzymatic Assay of Cholesterol Oxidase

Enzymatic activity assay for cholesterol oxidase, excluding specific product numbers, providing guidelines for accurate cholesterol oxidase assays.

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