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- 文献和实验
- 技术资料
- 保存条件:
Powder:-20℃,2 years;Insolvent(母液):-20℃,6 months;-80℃,1 year
- 保质期:
Powder:-20℃,2 years;Insolvent(母液):-20℃,6 months;-80℃,1 year
- 英文名:
X-GAL
- 库存:
999
- 供应商:
北京索莱宝科技有限公司
- CAS号:
7240-90-6
- 规格:
100mg/50mg/250mg/25mg
| 规格: | 100mg | 产品价格: | ¥306.00 |
|---|---|---|---|
| 规格: | 50mg | 产品价格: | ¥240.00 |
| 规格: | 250mg | 产品价格: | ¥660.00 |
| 规格: | 25mg | 产品价格: | ¥150.00 |
X–gal是β–半乳糖苷酶(β–galactosidase)的底物,水解后呈蓝色。基于这个特点,pUC系列载体DNA(或其他带有lacZ基因载体DNA)以lacZ 缺失细胞为宿主进行转化时、或用M13噬菌体载体DNA进行转染时,如果在平板培养基中加入X–gal和IPTG,由于β–半乳糖苷酶的α–互补性,可以根据是否呈现白色菌落(或噬菌斑)而方便地挑选出基因重组体。

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文献和实验, transfect the DNA into mammalian cells, and then fix and stain a tissue with X-gal. The cells that turn blue must have the beta galactosidase enzyme, the product of the lac Z gene, which could only have been expressed from the donated promoter. Ergo
Materials Fixative 2% Paraformaldehyde (in PBS) Staining solution 5 mM potassium ferricyanide, 5 mM potassium ferrocyanide, 2 mM MgCI, 0.01% sodium deoxycholate 0.02% Nonidet P-40 (NP-40) in PBS. X-gal Stock 40 mg
Detection of -Galactosidase Activity: X-gal Staining
X-gal staining is a rapid and convenient histochemical technique used to detect reporter gene expression. A prerequisite is the creation or acquisition of transgenic reporter mouse lines, in which the bacterial LacZ gene has been knocked
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