Plasmids containing the same origin of replication are useful tools to perform biotechnological studies in Pseudomonas putida U and in E. coli DH10B

Authors Affiliation(s)

  • Departamento de Biología Molecular, Facultades de Veterinaria y de Biología, Universidad de León, León 24071, ESPAÑA

Can J Biotech, Volume 1, Issue 1, Pages 38-43, DOI:

Received: Feb 03, 2017; Revised: Mar 24, 2017; Accepted: Mar 27, 2017


Plasmids containing the same origin of replication (pBBR1MCS-2 KmR and pBBR1MCS-3 TcR) have been used to express simultaneous and independently different proteins in P. putida U and in E. coli. Thus, when P. putida was transformed with different genetic constructions made in the same plasmid (pBBR1MCS-3 TcR), or with plasmids containing the same replication origin but with different antibiotic resistant genes (KmR and TcR), they co-existed inside the same microbe. Furthermore, when E. coli DH10B was transformed with the plasmids recovered from the recombinant P. putida U, we noticed that all the bacteria isolated from single colonies are resistant to Km and Tc, suggesting that these plasmids were also present in E. coli. This observation facilitates the genetic manipulation of these strains (i.e. avoiding the use of different plasmids in double or multiple complementation experiments), and could be an interesting tool to approach many metabolic and biotechnological studies.


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