C7512

Butyrylcholinesterase from equine serum

lyophilized powder, ≥10 units/mg protein

• 동의어(들): Acylcholine acyl-hydrolase, Choline esterase, butyryl, Pseudocholinesterase
• CAS Number: 9001-08-5
• 효소 위원회 번호: 3.1.1.8 (BRENDA, IUBMB)
• EC Number: 232-579-2
• MDL number: MFCD00081455
• UNSPSC 코드: 12352204
• NACRES: NA.54

속성

• 형태: lyophilized powder
• Quality Level: 200
• 특이 활성도: ≥10 units/mg protein
• 분자량: tetramer 440 kDa
• 구성: Protein, ≥60%
• solubility: cold water: 60 U/mL
• 저장 온도: −20°C

설명

일반 설명

Butyrylcholinesterase (BChE) is a serine hydrolase that is structurally similar to acetylcholinesterase (AChE), but differs in substrate specificities and inhibitor sensitivities. The enzyme is a tetrameric glycoprotein with four equal subunits (110 kDa each). It is also termed as pseudocholinesterase. It is produced in the liver. It is found in blood, the synapse of neuromuscular junctions and glia cells and axons of white matter.

애플리케이션

Butyrylcholinesterase from equine serum has been used in a microcalorimetric study of the inhibition of butyrylcholinesterase by paraoxon. This enzyme has also been used in a study to investigate the synthesis and inhibition of cholinergic enzymes. Selective inhibition of BChE activity can be used in the detection of organophosphates. Its use in the treatment of organophosphate toxicity has shown clinical potential, as there is a correlation between the blood level of BChE in humans and the degree of protection against toxic nerve agents. There has also been an 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. This product has been used for the screening of cholineesterase inhibitors in selected fruits and vegetables, for restoring cognitive function and improving memory. It has also been used to develop a butyrylcholinesterase and choline oxidase immobilized bio-sniffer for the detection of nicotine. Nicotine inhibits BChE activity. A decrease in the byproducts of BChE activity reflects the volume of nicotine.

생화학적/생리학적 작용

Butyrylcholinesterase (BChE) can, unlike AChE, efficiently hydrolyze larger esters of choline such as butyrylcholine and benzoylcholine. 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, and carbamates.

Mutations in butyrylcholinesterase (BChE) gene results in the failure of respiratory system, prolonged paralysis and apnea.

단위 정의

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.

물리적 형태

Lyophilized powder containing buffer salts

제조 메모

This product is prepared from equine serum using ammonium sulfate fractionation and supplied as a lyophilized powder.

분석 메모

Protein determined by biuret

안전성 정보

• 픽토그램: GHS08
• 신호어: Danger
• 유해 및 위험 성명서: H334
• 예방조치 성명서: P261 - P284 - P501
• Hazard Classifications: Resp. Sens. 1
• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable
• 개인 보호 장비: Eyeshields, Gloves, type N95 (US)