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β 半乳糖苷酶 来源于大肠杆菌
β-Galactosidase from Escherichia coli
产品价格查看更多规格...
| 产品编号 | 包装单位 | 单价(元) | 国内现货 | 国外库存 | 询价单 |
| 3411463 | 1 MG | 3120 | 2-5天 | 4-6周 | |
| 3411463 | 25 MG | 4430 | 2-5天 | 4-6周 | |
| 3411463 | 5 MG | 5910 | 2-5天 | 4-6周 |
产品别名
9031-11-2
β 半乳糖苷酶 来源于大肠杆菌
β-Galactosidase from Escherichia coli
Lactase
β-
乳糖酶
β-
基本信息
| Enzyme Commission (EC) Number【酶学委员会(EC)编号】 | 3.2.1.23 ( BRENDA | IUBMB ) |
| EC number【EC 号】 | 232-864-1 |
| MDL number | MFCD00130623 |
| NACRES | NA.54 |
| Quality【质量】 | lyophilized |
| Application【应用】 | Aqueous solution may be used directly for derivatization without previous dialysis or gel permeation chromatography. |
| Biochem/physiol Actions【生化/生理作用】 | β-半乳糖苷酶可将乳糖切割成单糖成分(葡萄糖和半乳糖)。它还在反馈环中催化葡萄糖转糖基化为β-半乳糖苷酶的诱导物 - 异乳糖。 |
| Physical properties【物理属性】 | 四聚体的分子量为465 kDa(每个亚基116.3 kDa) |
| Unit Definition【单位定义】 | 1 U corresponds to the amount of enzyme which hydrolyzes 1 μmol 2-nitrophenyl-β-D-galactopyranoside (Cat. No. 73660) per minute at pH 7.8 and 37 ℃ |
| Other Notes【其他说明】 | Used in a highly sensitive enzyme-linked immunoassay of human IgG with 4-methylumbelliferyl-β-D-galactoside (Catalog No. 69590); Evaluation of β-D-galactosidase (E. coli) and horse radish peroxidase as labels by sandwich enzyme immunoassay technique; Enzyme immunoassay of thyrptropin releasing hormone (TRH); Preparation of enzyme-antibody conjugates |
产品性质
| form【形式】 | powder |
| Quality Level【质量水平】 | 100 |
| Specific Activity | ~140 U/mg |
| mol wt【分子量】 | Mr ~135000 |
| contains【包含】 | phosphate buffer as stabilizer sucrose as stabilizer |
| technique(s) | enzyme immunoassay: suitable |
| shipped in【运输】 | wet ice |
| storage temp.【储存温度】 | −20℃ |
| packaging【包装】 | Bottomless glass bottle. Contents are inside inserted fused cone. |
安全信息
| Storage Class Code【储存分类代码】 | 13 - Non Combustible Solids |
| WGK | WGK 3 |
| Personal Protective Equipment【个人防护装备】 | Eyeshields, Gloves, type N95 (US) |
