产品G5635监管中，请联系销售询价或购买 联系客户支持
推荐产品
1 of 4
此商品 | 88597 | H1009 | 18304 |
|---|---|---|---|
| grade for inorganic trace analysis, for ultratrace analysis | grade - | grade - | grade - |
| Quality Level 100 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| form liquid | form solution | form liquid | form - |
| storage temp. 2-8°C | storage temp. - | storage temp. 2-8°C | storage temp. 2-8°C |
| anion traces bromide (Br-): ≤10 μg/kg, fluoride (F-): ≤1000 μg/kg, phosphate (PO43-): ≤25 μg/kg, chloride (Cl-): ≤25 μg/kg, sulfate (SO42-): ≤50 μg/kg, nitrate (NO3-): ≤250 μg/kg | anion traces - | anion traces - | anion traces - |
一般描述
β-半乳糖苷酶是一个四聚体，由四个相同的亚基组成，每个亚基的分子量都为135,000。它是一种含巯基的酶，每个亚基含有19个半胱氨酸残基。[1]
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。
物理属性
四聚体的分子量为465 kDa（每个亚基116.3 kDa）
单位定义
在37 °C，pH 7.3条件下，一个单位每分钟可将1.0μmole邻硝基苯基β-D-半乳糖苷水解为邻硝基苯酚和D-半乳糖。
外形
含有Tris缓冲盐和氯化镁
底物
储存分类代码
11 - Combustible Solids
WGK
WGK 3
闪点(°F)
Not applicable
闪点(°C)
Not applicable
个人防护装备
Eyeshields, Gloves, type N95 (US)
法规信息
常规特殊物品
历史批次信息供参考:
分析证书(COA)
Lot/Batch Number
Alan Merk et al.
IUCrJ, 7(Pt 4), 639-643 (2020-07-23)
We report the determination of the structure of Escherichia coli β-galactosidase at a resolution of ∼1.8 Å using data collected on a 200 kV CRYO ARM microscope equipped with a K3 direct electron detector. The data were collected in a single 24 h
Assays for bacterial mucin-desulfating sulfatases.
A M Roberton et al.
Methods in molecular biology (Clifton, N.J.), 125, 417-426 (2000-05-23)
K Kato et al.
Journal of immunology (Baltimore, Md. : 1950), 116(6), 1554-1560 (1976-06-01)
1. A method for the conjugation of the Fab' fragment of rabbit IgG with beta-D-galactosidase from Escherichia coli is described. The method consists of two main steps: treatment of the Fab' fragments containing sulfhydryl groups with excess N,N'-o-phenylenedimaleimide, to introduce
Raimond B G Ravelli et al.
Nature communications, 11(1), 2563-2563 (2020-05-24)
The increasing demand for cryo-electron microscopy (cryo-EM) reveals drawbacks in current sample preparation protocols, such as sample waste and lack of reproducibility. Here, we present several technical developments that provide efficient sample preparation for cryo-EM studies. Pin printing substantially reduces
Toshiya Suzuki et al.
Plant physiology, 173(1), 183-205 (2016-11-12)
Pollen exine is essential for protection from the environment of the male gametes of seed-producing plants, but its assembly and composition remain poorly understood. We previously characterized Arabidopsis (Arabidopsis thaliana) mutants with abnormal pollen exine structure and morphology that we
商品
For use as a marker in SDS-PAGE; Albumin from chicken egg white, For use as a marker in SDS-PAGE; L-Lactic Dehydrogenase from rabbit muscle, Type XI, lyophilized powder, 600-1,200 units/mg protein
我们的科学家团队拥有各种研究领域经验，包括生命科学、材料科学、化学合成、色谱、分析及许多其他领域.
联系客户支持
