β-Galactosidase from Escherichia coli
商品编号：
S0500
备注：
国外库存，货期2-4周，具体详情请联系销售人员。
详细介绍
l 基本信息 |
产品名称 | β-Galactosidase from Escherichia coli |
一般描述 | β-Galactosidase is a tetramer consisting of
four equal subunits of 135,000 each. It is a sulfhydryl containing enzyme, with 19 cysteine residues per subunit. |
别 称 | β-D-Galactoside galactohydrolase, Lactase |
含 量 | Grade VIII, ≥500units/mg protein; Protein, ≥60% biuret |
CAS
NO. | 9031-11-2 | MDL
number | MFCD00130623 |
适用范围 | 生物试剂 |
l 理化信息 |
外 观 | 冻干粉 |
物理形态 | Contains Tris buffer salts and magnesium chloride |
l 生物学信息 |
生物活性/药理作用 | β-galactosidase cleaves lactose into its monosaccharide components, glucose and galactose. It also catalyses the transglycosylation of glucose into allolactose, the inducer of β-galactosidase, in a feedback loop. |
应 用 | β-Galactosidase is conjugated to an antibody which specifically recognizes a target molecule (enzyme immunoassay or EIA). β-Galactosidase is also used as a reporter enzyme to monitor the level of gene of a promoter.It may be used as a positive control protein with anti-β-galactosidase antibodies. |
有效单位定义 | One unit will hydrolyze 1.0μmole of o-nitrophenyl β-D-galactoside to o-nitrophenol and D-galactose per min at pH7.3 at 37°C. |
l 存储 |
存储温度 | -20°C |
l 注意事项及免责声明 |
本产品仅用于实验研究，不得作为药物使用，不得用于家用或其它用途。 |
l 参考文献 |
1. http://www.drugbank.ca 2. https://ncit.nci.nih.gov 3. https://www.ncbi.nlm.nih.gov |
