A new family of conditional replicating plasmids and their cognate Escherichia coli host strains

Research in Microbiology
Chiho Matsumoto-MashimoDidier Mazel

Abstract

We constructed a family of conditionally replicating plasmids, the pTX1 family, which are based on the IncPalpha oriV origin of replication that is dependent on the trfA-encoded protein. We constructed several Escherichia coli derivatives expressing trfA from different chromosomal loci, which can be transduced by phage P1 to any E. coli strain. The pTX1 plasmids also carry the oriTRP4 origin of transfer, and can be conjugated to E. coli, Vibrio cholerae and likely to a broad range of bacteria from the commonly used donor strains SM10 and S17-1, which sustain replication of the plasmids through the trfA gene carried by their integrated RP4. If TrfA is not provided in trans, these plasmids behave as suicide vectors. As such they can be used as a platform for a variety of applications such as those developed on the popular conditionally replicating plasmids carrying the oriVR6Kgamma origin of replication that is controlled by the Pi protein. Their ability to be used as efficient suicide vectors for gene disruption in V. cholerae has been demonstrated.

References

Sep 25, 1978·Journal of Molecular Biology·R Kolter, D R Helinski
Jun 1, 2000·Proceedings of the National Academy of Sciences of the United States of America·K A Datsenko, B L Wanner
Nov 10, 2000·Nucleic Acids Research·M K ChaverocheC d'Enfert
Feb 24, 2001·Proceedings of the National Academy of Sciences of the United States of America·D A Rowe-MagnusD Mazel
Apr 16, 2002·Molecular Microbiology·Dean A Rowe-MagnusDidier Mazel

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Citations

Oct 7, 2008·Applied and Environmental Microbiology·Johan BinesseFrédérique Le Roux
Sep 17, 2013·PloS One·Jodie C ScottMargaret J Duncan
Jul 22, 2008·Research in Microbiology·Ana BabicDidier Mazel
Mar 21, 2007·Molecular Microbiology·Silvia SzekeresDean A Rowe-Magnus
Jun 29, 2012·Nucleic Acids Research·Céline LootDidier Mazel
Oct 18, 2019·Journal of Food Protection·Kai-Ming TsoHin-Chung Wong

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