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MEXi mammalian expression system from IBA

The MEXi system offers all essential components for efficient protein expression in mammalian cells:

  • It comprises a perfectly matched HEK293E cell line, cell culture media and expression vectors to provide high protein yields without further optimization
  • Transient expression for time and cost efficient protein production
  • Efficient nuclear import and extrachromosomal replication due to vector encoded EBV origin of replication (oriP) and EBNA-1 provided by MEXi-293E cells
  • Multiple expression vectors with different features
  • Optimized for Twin-Strep-tag®/Strep-Tactin® system for highly pure proteins
  • IP free system with attractive prices


  • Purification of GOI (e.g. on immobilized Strep-Tactin®XT binding a Twin-Strep-tag® fusion protein)