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C1403

Sigma-Aldrich

Cholesterol Esterase from Pseudomonas sp.

lyophilized powder, ≥200,000 units/g protein

Synonyme(s) :

Cholesterol Esterase from Pseudomonas fluorescens, Sterol-ester acylhydrolase

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About This Item

Numéro CAS:
9026-00-0
Numéro de classification (Commission des enzymes):
3.1.1.13 (BRENDA, IUBMB)
Numéro CE :
232-808-6
Numéro MDL:
MFCD00071052
Code UNSPSC :
12352204
Nomenclature NACRES :
NA.54
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Forme

lyophilized powder

Niveau de qualité

200

Activité spécifique

≥200,000 units/g protein

Poids mol.

~300 kDa

Composition

protein, ≥40% biuret

Température de stockage

−20°C

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Application

This enzyme is useful for enzymatic determination of total cholesterol when coupled with cholesterol oxidase in clinical analysis.

Actions biochimiques/physiologiques

Cholesterol esterase (CE) is a reversible enzyme that can hydrolyze or synthesize fatty acid esters of cholesterol and other sterols. Hydrolysis of water insoluble long chain fatty acid esters requires bile salt activation. Hydrolysis of water soluble esters of short chain fatty acids and lysophospholipids does not require activation by bile salts. It also hydrolyzes tri-, di-, and mono-acylglycerols, phospholipids, lysophospholipids, and ceramide. The enzyme may have multiple functions in lipid and lipoprotein metabolism, and atherosclerosis.[1]

Propriétés physiques

Stability: Stable at –20°C for at least one year
Isoelectric point: 5.9 ± 0.1
Michaelis constants: 5.4 x 10‾5M (Linoleate), 6.6 x 10‾5M (Oleate)
3.7 x 10‾5M (Linolenate), 1.5 x 10‾4M (Palmitate)
1.2 x 10‾4M (Myristate), 2.3 x 10‾5M (Stearate)
Inhibitors: Hg++, Ag+, ionic detergents
Optimum pH: 7.0 − 9.0
Optimum temp: 40°C
pH Stability: pH 5.0 − 9.0 (25°C, 24hr)
Thermal stability: Below 55°C (pH 7.5, 10min)

Définition de l'unité

One unit will hydrolyze 1.0 μmole of cholesteryl oleate to cholesterol and oleic acid per min at pH 7.0 at 37 °C in the presence of taurocholate.

Pictogrammes

Health hazard
GHS08

Mention d'avertissement

Danger

Mentions de danger

H334

Conseils de prudence

P261 - P284 - P501

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

Équipement de protection individuelle

Eyeshields, Gloves, type N95 (US)

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Certificats d'analyse (COA)

Lot/Batch Number
0000315675
0000264542
SLCM7419
SLCL0787
SLCJ6846

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Retrouvez la documentation relative aux produits que vous avez récemment achetés dans la Bibliothèque de documents.

Consulter la Bibliothèque de documents

David Y Hui et al.
Journal of lipid research, 43(12), 2017-2030 (2002-11-28)
Carboxyl ester lipase (CEL), previously named cholesterol esterase or bile salt-stimulated (or dependent) lipase, is a lipolytic enzyme capable of hydrolyzing cholesteryl esters, tri-, di-, and mono-acylglycerols, phospholipids, lysophospholipids, and ceramide. The active site catalytic triad of serine-histidine-aspartate is centrally
Javier Sánchez-Marco et al.
Biomedicines, 10(3) (2022-03-26)
Thioredoxin domain containing 5 (TXNDC5) is a protein disulfide isomerase involved in several diseases related to oxidative stress, energy metabolism and cellular inflammation. In a previous manuscript, a negative association between fatty liver development and hepatic Txndc5 expression was observed.
Joanna Karbowska et al.
Steroids, 77(13), 1359-1365 (2012-09-07)
Dehydroepiandrosterone (DHEA) reduces body fat in rodents and humans, and increases glycerol release from isolated rat epididymal adipocytes and human visceral adipose tissue explants. It suggests that DHEA stimulates triglyceride hydrolysis in adipose tissue; however, the mechanisms underlying this action
Yong-lan Huang et al.
Zhonghua er ke za zhi = Chinese journal of pediatrics, 50(8), 601-605 (2012-11-20)
To explore the clinical characteristics of Wolman disease and diagnostic methods using enzymatic and molecular analysis. Lysosomal acid lipase activity was measured using 4-methylumbelliferyl oleate in the leukocytes of an infant suspected of Wolman disease and LIPA gene mutational analysis
Myung Hee Moon et al.
Experimental & molecular medicine, 44(10), 603-614 (2012-08-04)
Higher levels of body fat are associated with an increased risk for development numerous adverse health conditions. FTY720 is an immune modulator and a synthetic analogue of sphingosine 1-phosphate (S1P), activated S1P receptors and is effective in experimental models of
Afficher tous les articles scientifiques apparentés

Articles

Cholesterol Esterification

Cholesterol esterification enhances transport efficiency in lipoproteins for increased blood stream transport.

Cholesterol Esterification

Cholesterol esterification enhances transport efficiency in lipoproteins for increased blood stream transport.

Cholesterol Esterification

Cholesterol esterification enhances transport efficiency in lipoproteins for increased blood stream transport.

Cholesterol Esterification

Cholesterol esterification enhances transport efficiency in lipoproteins for increased blood stream transport.

Protocoles

Assay Procedure for Cholesterol Esterase

Protocol for Assay Procedure for Cholesterol Esterase

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