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E. coli Expression Systems

V30302 - Standard Cloning Vector pBR322


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pBR322 is an ampicillin and tetracycline resistant, general purpose cloning vector. Several inactivating cloning sites are present in the antibiotic resistance genes, which, if a reading frame shift occurs, will give rise to AmpR/TcS or AmpS/TcR transformants. This vector comes ready-to-use for enzymatic reactions and transformations.


  • Reading frame shift gives AmpR and TcS transformants
  • Resistant to ampicillin and tetracycline
  • Origin = ColE1


  • pBR322 Vector DNA, 25 µg