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Merck

26745

Sigma-Aldrich

Cholesterinesterase aus Schweinepankreas

lyophilized, powder, white, ~35 U/mg

Synonym(e):

Cholesterin-Esterase aus Schweinepankreas

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About This Item

CAS-Nummer:
EC-Nummer:
EG-Nummer:
MDL-Nummer:
UNSPSC-Code:
12352204
NACRES:
NA.77

Biologische Quelle

Porcine pancreas

Form

powder

Qualität

lyophilized

Spezifische Aktivität

~35 U/mg

Mol-Gew.

Mr ~440000

Farbe

white

Lagertemp.

−20°C

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Allgemeine Beschreibung

Research area: Cell signaling

Pancreatic cholesterol esterase (CEase), also known as bile salt stimulated lipase, is a serine hydrolase belonging to the α/β hydrolase family of enzymes. They are released from the exocrine pancreas. Serine 194, histidine 435 and aspartate 320 represent the catalytic triad of the enzyme.

Anwendung

Cholesterol Esterase from porcine pancreas has been used:
  • in an in vitro simulated digestion model to improve the hydrolysis of carotenoid esters in the intestinal phase
  • to analyze the bioavailability of phytosterol and cholesterol in the aqueous micellar phase of an in vitro simulated digestion model
  • as a standard in enzyme activity assay

Biochem./physiol. Wirkung

Cholesterol esterase (CEase), an enzyme having broad substrate specificity plays a key role in regulating the bile salt mediated hydrolysis of dietary cholesteryl esters. It also participates in the hydrolysis of triglycerides and phospholipids which are essential for normal cholesterol absorption. Cholesterol esterase hydrolysis helps in the determination of total cholesterol levels in the serum and plasma. Additionally, cholesterol esterase (CEase) along with phospholipase A2 is involved in the hydrolysis of lecithin to lysolecithin, forming intestinal micelles that deliver free cholesterol to enterocytes. Loss of enzyme function results in reduced intestinal absorption of dietary cholesteryl esters and prevents the formation of intestinal micelles, thereby failing to deliver cholesterol efficiently. Circulating cholesterol esterases, accumulated in atherosclerotic lesions are involved in triggering the proliferation of smooth muscle cells. Lastly, they are also selectively involved in the hydrolysis/condensation of carboxylic ester bonds.

Einheitendefinition

1 U entspricht der Enzymmenge, die 1 μmol Cholesterin pro Minute bei pH 7.0 und 37°C freisetzt (Cholesterin-acetat als Substrat)

Sonstige Hinweise

Kann Verkaufsbeschränkungen unterliegen.

Piktogramme

Health hazard

Signalwort

Danger

H-Sätze

Gefahreneinstufungen

Resp. Sens. 1

Lagerklassenschlüssel

11 - Combustible Solids

WGK

WGK 1

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable

Persönliche Schutzausrüstung

Eyeshields, Gloves, type N95 (US)


Analysenzertifikate (COA)

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In der Dokumentenbibliothek finden Sie die Dokumentation zu den Produkten, die Sie kürzlich erworben haben.

Die Dokumentenbibliothek aufrufen

R.J. Kazlauskas
Journal of the American Chemical Society, 111, 4953-4953 (1989)
Baojian Li et al.
European journal of medicinal chemistry, 45(5), 1955-1963 (2010-02-13)
Due to the importance of pancreatic cholesterol esterase (CEase) as a potential target in atherosclerosis and for the development of hypocholesterolemic agents, there are increasing interests in designing and synthesizing CEase inhibitors. In the present study, we prepared forty-five isocoumarin
Ömer Şahin et al.
Journal of biomolecular structure & dynamics, 1-15 (2021-01-23)
In this work, Combining coumarin and thiazole with 3-tertiary butyl salicylaldehyde into in a single molecule, new Schiff base (CTS), and its metal complexes with palladium and platinum were synthesized and characterized by using well-known spectroscopic techniques such as 1H-NMR
Isocoumarin-based inhibitors of pancreatic cholesterol esterase
Heynekamp JJ, et al.
Journal of Separation Science, 16(9), 5285-5294 (2008)
J. Siedel et al.
Methods of Enzymatic Analysis, 8, 139-139 (1985)

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