P22-Based Challenge Phage Constructs to Study DNA-Protein Interactions between the $\sigma$54-Dependent Promoter, dctA, and Its Transcriptional Regulators

  • Kim, Euhgbin (Department of Biology and Institute of Bioscience and Biotechnology, Yonsei University ) ;
  • Kim, Daeyou (Department of Genetic Engineering , Youngdong University) ;
  • Lee, Joon-Haeng (Department of Ophthalmology and The institute of Vision Research, Yonsei University College of Medicine )
  • Published : 2000.09.01

Abstract

A challenge phage system was used to study the DNA-protein interaction between C4-dicarboxylic acid transport protein D(DCTD) or $\sigma$54, and a $\sigma$54 -dependent promoter, dctAp. R. meliloti dctA promoter regulatory region replaced the Omnt site on the phage. S. typhimurium strains overproducing either DCTD or $\sigma$54 directed this challenge phage towards lysogency, indicating that DCTD or E$\sigma$54 recognized the dctA promoter on the phage and repressed transcription of the ant gene. These challenge phage constructs will be useful for examining interactions between DCTD(or $\sigma$54) and the dctA promoter region.

Keywords

References

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