计算溶液所需的质量、体积或浓度。
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在色谱分析、有机合成和交叉偶联反应领域已被 1 篇同行评审文献引用。
催化糖苷的水解反应。苦杏仁酶(Emulsin)最初指的是甜杏仁的提取物,至今仍是 β- 葡萄糖苷酶的历史性原型。目前已发现该酶的多种其他来源。苦杏仁酶还具有显著的 D - 半乳糖苷酶活性,关于其是否为一种酶具有两种活性存在争议,因为抑制剂对两种活性的影响并不平行,这表明可能存在两种独立的酶。此外,有报道称杏仁苦杏仁酶中还含有 D - 甘露糖苷酶。
形态:浅黄色至黄棕色粉末。
溶解度:在水中呈无色至浅黄色,澄清至微浊。
溶解度浓度:1.90-2.10mg/ml。
测定方法:β- 葡萄糖苷酶水解水杨苷生成水杨醇和 β-D - 葡萄糖,通过己糖激酶 / 葡萄糖 - 6 - 磷酸脱氢酶系统测定葡萄糖的生成速率。在特定条件下(37°C、pH 5.0),1 个单位的酶活力定义为每分钟释放 1 微摩尔葡萄糖的酶量。
特异性:据报道,该酶的底物包括 β- 葡萄糖苷和 β- 半乳糖苷。
抑制剂:氯化汞(HgCl₂)、其他重金属离子、巯基结合化合物以及多元醇。
重要声明:本产品仅供研究用途,不得用于人类治疗或诊断应用。
毒性与危害: 所有产品仅限经过实验室操作培训的专业人员处理。
Catalyzes the hydrolysis of glucosides. Emulsin originally was the term applied to the extract of sweet almonds. It remains as the historical prototype of β-glucosidase. Many other sources of the enzyme have been described. Emulsin also shows significant D-galactosidase activity and there is some question as to whether or not it is one enzyme with two activities, because non-parallel response to inhibitors points to two separate enzymes. D-mannosidase has also been reported in almond emulsin.
Form: Supplied as a light yellow to yellow tan powder.
Solubility: Colorless to light yellow, clear to slightly hazy in water.
Solubility Concentration:1.90-2.10mg/ml
Assay Method: Salicin is hydrolyzed by b-glucosidase to yield saligenen and b-D-glucose. The rate of formation of glucose is measured in a hexokinase/glucose-6-phosphate dehydrogenase system. One unit releases one micromole of glucose per minute at 37°C and pH 5.0 under the specified conditions.
Specificity: b-glucosides and b-galactosides are reportedly substrates for the enzyme.
Inhibitors: HgCl₂, other heavy metal ions, sulfhydryl-binding compounds and polyols.
Important Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
Toxicity and Hazards: All products should be handled by qualified personnel only, trained in laboratory procedures.
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| 批号(Lot Number) | 证书类型 | 货号 |
|---|---|---|
| 分析证书 | G755204 | |
| 分析证书 | G755204 |
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