pSV-β-Galactosidase哺乳动物表达载体

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载体订购信息

产品编号
GS-1967
产品名称
pSV-β-Galactosidase 哺乳动物表达载体
市场价格
询价
沟通洽谈

载体基本信息

载体名称:
pSV-β-Galactosidase
载体类型:
哺乳动物表达载体
克隆方法:
/
拷贝类型:
/
载体抗性:
Ampicillin (氨苄青霉素)
筛选标记:
/
载体大小:
6820 bp 点击查看完整序列
启动子:
/
测序引物5’:
/
测序引物3’:
/
报告基因:
/

载体图谱展示

载体图谱

载体说明

The pSV-β-Galactosidase Control Vector(a) is designed as a positive control vector for monitoring transfection efficiencies of mammalian cells. The SV40 early promoter and enhancer drive transcription of the bacterial lacZ gene, which in turn, is translated into the β-galactosidase enzyme. β-galactosidase is an excellent reporter enzyme (1,2), that can be assayed quickly and directly in cell extracts using spectrophotometric, fluorescent or chemiluminescent assays (3,4). This reporter enzyme is also widely used for in situ histochemical analysis using the substrate X-Gal (5).

The pSV-β-Galactosidase Control Vector can be co-transfected with your DNA of interest. For example, co-transfection with firefly luciferase gene vectors (pGL3 Vectors) provide cell extracts that can be assayed for both luciferase and β-galactosidase activities. In this manner, the pSV-β-Galactosidase Vector acts as an internal control for transient expression assays. A negative control extract, prepared from mock-transfected cells, should also be assayed for the presence of endogenous β-galactosidase activity in cultured cells (2). In addition, co-transfection with chloramphenicol acetyltransferse reporter gene vectors (pCAT?3 Vectors) permits assaying for both CAT and β-galactosidase activities.

The pSV-β-Galactosidase Vector is a modification of pRSV-βGAL (6) with SV40 and pUC18 sequences substituted for RSV and pBR322 sequences. The pSV-β- Galactosidase Vector will express β-galactosidase in E. coli due to the presence of the E. coli gpt promoter located upstream of the lacZ gene (1). Colonies of E. coli containing the pSV-β-Galactosidase Vector will appear blue when plated on media containing X-gal.

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