pTargeT Mammalian Expression Vector System

Varenummer: A1410
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The pTARGET Mammalian Expression Vector System is a convenient system for cloning PCR products and for expressing cloned PCR products in mammalian cells. The vector is prepared by digestion with EcoRV followed by addition of a 3' terminal thymidine to each end. These single 3'-T overhangs at the insertion site greatly improve the efficiency of ligation of a PCR product into the plasmid in two ways. First, the overhangs prevent recircularization of the vector; second, they provide a compatible overhang for PCR products generated by thermostable polymerases that add a single deoxyadenosine, in a template-independent fashion, to the 3'-ends of amplified fragments. The pTARGET Vector also contains a modified coding sequence of the alpha-peptide of beta-galactosidase, which allows recombinants to be selected using blue/white screening. The pTARGET Vector carries the human cytomegalovirus (CMV) immediate-early enhancer/promoter region to promote constitutive expression of cloned DNA inserts in mammalian cells. This vector also contains the neomycin phosphotransferase gene, a selectable marker for mammalian cells. The pTARGET Vector can be used for transient expression or stable expression by selecting transfected cells with the antibiotic G-418.|

Simple PCR Cloning: "T" overhangs permit direct ligation of PCR products generated by thermostable enzymes such as Taq DNA polymerase.
Strong, Constitutive Expression: The CMV enhancer/promoter region allows strong, constitutive expression in many cell types. In transgenic mice, expression of the chloramphenicol acetyltransferase (CAT) gene under the regulation of the CMV enhancer/promoter was observed in 24 of the 28 tissues examined. The vector is maintained as an episome in cells expressing the SV40 large T antigen, leading to even higher levels of expression.
Blue/White Screening: Allows easy identification of recombinant clones. A single digest removes the insert DNA.
Stable Transfectants: Select for stable transfectants using the neomycin phosphotransferase gene.

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Store competent cells at -70°C; store all other components at -20°C or -70°C.|

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Claudia Emmanuel 951 51 950
Monica Laukas 404 40 960

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