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Merck
모든 사진(1)

주요 문서

E2884

Sigma-Aldrich

Esterase from porcine liver

ammonium sulfate suspension, ≥150 units/mg protein (biuret)

동의어(들):

Carboxyl esterase, Carboxylic-ester hydrolase, PLE

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About This Item

CAS Number:
효소 위원회 번호:
MDL number:
UNSPSC 코드:
12352204
NACRES:
NA.54

생물학적 소스

Porcine liver

Quality Level

양식

ammonium sulfate suspension

특이 활성도

≥150 units/mg protein (biuret)

분자량

168 kDa

저장 온도

2-8°C

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관련 카테고리

일반 설명

Esterase, also known as carboxyl ester hydrolase is a member of the hydrolase superfamily of enzymes.

애플리케이션

Esterase from porcine liver has been used to unmask the fluorescence in ultraviolet-visible spectroscopy.
Porcine liver esterase is used to catalyze the hydrolysis of pentaacetyl catechin and epicatechin for use in pharmaceutical and industrial applications.

Pig liver esterase is commonly used for kinetic resolutions and assymetric synthesis in organic chemistry.
The enzyme from Sigma has been used to develop an alternative gel-based protocol for screening for bead-bound catalytic activity in aqueous media. The product has also been used to investigate the properties of the compound L-valine-3-{8-[(E)-2-[3-methoxyphenyl)ethenyl]-7-methyl-1-propargylxanthine-3-yl}propyl ester hydrochloride (MSX-4, an aminoacid ester prodrug of the adenosine A2A receptor antagonist MSX-2).

생화학적/생리학적 작용

Esterase acts on water-soluble carboxyl esters containing short chain fatty acids. Its functionality is attributed to the catalytic triad of Ser, His and Asp/Glu.
Esterase enzyme of bacteria and fungi seems to have several industrial applications. It is capable of catalyzing the hydrolysis and synthesis of ester bonds.
Pig liver esterase catalyzes enantioselective conversion of an ester to a carboxylic acid. The molecular weight is found to be 168 kDa. It is a serine enzyme with two active sites on each molecule, which dissociates into active half-molecules in the presence of dilute acid or concentrated salts.

단위 정의

One unit will hydrolyze 1.0 μmole of ethyl butyrate to butyric acid and ethanol per min at pH 8.0 at 25 °C.

물리적 형태

Suspension in 3.2 M (NH4)2SO4, pH 8

Storage Class Code

12 - Non Combustible Liquids

WGK

WGK 1

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable

개인 보호 장비

Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)


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Lipolysis and Metabolism of Fatty Acids in Cheese
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A New Screen for Combinatorial Catalysis; On-Bead Testing in Agarose Gel Financial support for this work was provided by the University of Bristol, the EPSRC (studentship to T.W.M.) and the EC (TMR and Human Potential programs). We are grateful to Dr. John Crosby and Dr. Russell Cox for advice on enzyme chemistry and the handling of electrophoresis gels.
Michael Müller et al.
Angewandte Chemie (International ed. in English), 40(20), 3813-3815 (2001-10-23)
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The compound L-valine-3-{8-[(E)-2-[3-methoxyphenyl)ethenyl]-7-methyl-1-propargylxanthine-3-yl}propyl ester hydrochloride (MSX-4) was synthesized as an amino acid ester prodrug of the adenosine A2A receptor antagonist MSX-2. It was found to be stable in artificial gastric acid, but readily cleaved by pig liver esterase.
Fluorogenic affinity label for the facile, rapid imaging of proteins in live cells
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Organophosphorus chemical warfare agents (nerve agents) are to be feared in military operations as well as in terrorist attacks. Among them, VX (O-ethyl-S-[2-(diisopropylamino)ethyl] methylphosphonothioate) is a low volatility liquid that represents a percutaneous as well as an inhalation hazard if

문서

Instructions for working with enzymes supplied as ammonium sulfate suspensions

프로토콜

Enzymatic Assay of Esterase

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