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Regulated mammalian expression system

Fornecedor: Promega

C9461 C9451
PROMC9461EA 0 EUR
PROMC9461 PROMC9451
Regulated mammalian expression system
Expressão de proteínas Protein Expression Systems

Regulated mammalian expression system is based on a novel on/off switch that relies on the rapid and sensitive modulation by coumarin-related compounds of a chimeric transactivator protein.


  • Low basel levels
  • Robust and rapid induction
  • Down regulation of gene expression in mammalian cells
  • Novobiocin switches off the expression


The system features low basal levels, robust and rapid induction, and down regulation of gene expression in mammalian cells. Nanomolar concentrations of the antibiotic coumermycin promote homodimerisation of a chimeric transactivator that then binds to lambda operator sequences for a protein of interest. Protein expression levels can be regulated by adjusting the coumermycin concentration. The expression can be promptly switched off by adding novobiocin, which acts as an antagonist by dissociating the dimerized transactivator protein.


The protein coding region of interest is cloned into either the pF12A RM Flexi® vector or pF12K RM Flexi vector. These vectors incorporate regulatory promoter sequences upstream of the protein-region and are compatible with the Flexi Vector System. The pReg neo Vector is designed to express a chimeric transactivator protein that interacts with the regulatory promoter region in the pF12A and pF12K RM Flexi Vectors in response to coumermycin and novobiocin. Components should be stored at –20 °C.


Informações de encomenda: The system includes 20 µg pF12A RM Flexi Vector (A, B, C, D, E) 20 µg pF12K RM Flexi Vector (A, B, C, D, E), and 20 µg pReg neo Vector (B, C, D). Individual vectors are available separately.

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