C1057
Butyrylcholinesterase from equine serum
lyophilized powder, ≥900 units/mg protein
Synonym(s):
Acylcholine acyl-hydrolase, Choline esterase, butyryl, Pseudocholinesterase
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About This Item
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form
lyophilized powder
Quality Level
specific activity
≥900 units/mg protein
mol wt
tetramer 440 kDa
composition
Protein, ≥10%
solubility
H2O: soluble 10 mg/mL
application(s)
diagnostic assay manufacturing
storage temp.
−20°C
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Application
Selective inhibition of BChE activity can be used in the detection of organophosphates. Its use in the treatment of organophosphate toxicity has been explored. It has been reported that the level of BChE in human blood correlates to the degree of protection against potentially toxic nerve agents. Cholinesterases have also been investigated for their role in Alzheimer′s disease.
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+. The activity is constant over the pH range of 6.0-8.0. It is inhibited by betaine, nicotine, organophosphates, and carbamate.
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; contains buffer salts
Analysis Note
Protein determined by biuret
inhibitor
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Resp. Sens. 1
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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