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26746

Sigma-Aldrich

Cholesterol Oxidase from Nocardia erythropolis

in 1 M ammonium sulfate solution, pH 6, solution (slightly hazy), ≥15 U/mL

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About This Item

CAS Number:
Enzyme Commission number:
EC Number:
MDL number:
UNSPSC Code:
12352204

form

solution (slightly hazy)

quality

in 1 M ammonium sulfate solution, pH 6

concentration

≥15 U/mL

color

pale yellow

storage temp.

2-8°C

Unit Definition

1 U corresponds to the amount of enzyme which converts 1 μmol cholesterol to 4-cholesten-3-one per minute at pH 7.5 and 25 °C

Other Notes

Conversion of cholesterol to 4-cholesten-3-one;[1] Isomerization of cholest-5-en-3-one to cholest-4-en-3-one;[2] Properties and applications, minireview;[3] Review in clinical biochemistry: The quantitative analysis of cholesterol.[4]

pictograms

Health hazard

signalword

Danger

hcodes

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)


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The mechanism of the isomerization of Cholest-5-en-3-one to cholest-4-en-3-one by cholesterol oxidase [proceedings].
A G Smith et al.
Biochemical Society transactions, 5(4), 1088-1090 (1977-01-01)
A G Smith et al.
The Biochemical journal, 167(1), 121-129 (1977-10-01)
1. 5-Cholesten-3-one was shown to be an intermediate in the conversion of cholesterol into 4-cholesten-3-one by Nocardia cholesterol oxidase. 2. The absence of a C-17 side chain from 5-androstene-3,17-dione slightly increased the Vmax. of the isomerase activity relative to 5-cholesten-3-one
Cholesterol oxidases: properties and applications.
A G Smith et al.
Journal of steroid biochemistry, 7(9), 705-713 (1976-09-01)
Analytical reviews in clinical biochemistry: the quantitative analysis of cholesterol.
W Richmond
Annals of clinical biochemistry, 29 ( Pt 6), 577-597 (1992-11-01)
Marco P C Marques et al.
New biotechnology, 29(2), 227-234 (2011-10-20)
The use of microchannel reactor based technologies within the scope of bioprocesses as process intensification and production platforms is gaining momentum. Such trend can be ascribed a particular set of characteristics of microchannel reactors, namely the enhanced mass and heat

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