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C4290 Sigma-Aldrich

Butyrylcholinesterase from equine serum

lyophilized powder, ≥500 units/mg protein

Synonym: Acylcholine acyl-hydrolase, Choline esterase, butyryl, Pseudocholinesterase

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Description

Application

Butyrylcholinesterase (BChE) from equine serum has been used:
• to determine the inhibitory concentration of bupivacaine on butyrylcholinesterase
• in acetylcholinesterase (AChE)/BChE activity assay to determine the inhibitory activity of benzothiazole-piperazine compounds

Selective inhibition of BChE activity can be used in the detection of organophosphates. Its use in the treatment of organophosphate toxicity shows promise. There is a correlation between the level of BChE in human blood and degree of protection against potentially toxic nerve agents. There has also been interest in the roles of cholinesterases with regard to Alzheimer’s disease. Investigations into selective inhibitors may provide a clearer picture of the physiological role of BChE in both healthy and diseased individuals. The enzyme has been used to test bupivacaine as an inhibitor of butyrylcholinesterase during acetylcholinesterase assay using cerebrospinal fluid.

Packaging

1000 units in poly bottle

Biochem/physiol Actions

Butyrylcholinesterase (BChE) is a serine hydrolase that is structurally similar to acetylcholinesterase (AChE), but differs in substrate specificities and inhibitor sensitivities. BChE can, unlike AChE, efficiently hydrolyze larger esters of choline such as butyrylcholine and benzoylcholine. The enzyme is a tetrameric glycoprotein with four equal subunits (110 kDa each). The enzyme is activated by Ca2+ and Mg2+ and the activity is constant over the pH range 6.0-8.0. It is inhibited by Betaine, nicotine, organophosphates, carbamates.

Unit Definition

One unit will hydrolyze 1.0 μmole of butyrylcholine to choline and butyrate per min at pH 8.0 at 37 °C. The activity obtained using butyrylcholine as substrate is ~2.5 times that obtained using acetylcholine.

Physical form

Highly purified, lyophilized powder containing buffer salts

Analysis Note

Protein determined by biuret

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
3

Documents

Certificate of Analysis

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Certificate of Origin

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Protocols & Articles

Articles

Plasma Derived Proteins and Enzymes

Despite their complexity, blood and plasma are abundant biological resources for the discovery of drug targets and biomarkers for human disease. It is estimated that plasma may contain as many as 40,...
BioFiles 2006, 1.5, 2.
Keywords: Applications, Gas chromatography, Type

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Enzymes & Proteins

Application Index | Enzyme Index | Substrate Index | Inhibitor Index | Cofactor Index | Lectin Index
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Peer-Reviewed Papers
15

References

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