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Related Experiment Videos

Counter-selectable marker for bacterial-based interaction trap systems.

Xiangdong Meng1, Robin M Smith, Astrid V Giesecke

  • 1University of Massachusetts Medical School, Worcester, MA 01605, USA.

Biotechniques
|March 11, 2006
PubMed
Summary
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Researchers adapted the yeast URA3/5-FOA counter-selection system for bacterial two-hybrid assays. This enables robust screening of protein interactions in bacteria, enhancing the bacterial two-hybrid system

Area of Science:

  • Molecular Biology
  • Biochemistry
  • Genetics

Background:

  • Counter-selectable markers are crucial for yeast two-hybrid systems to identify interacting proteins or compounds.
  • The URA3/5-FOA system is a well-established counter-selection method in yeast.

Purpose of the Study:

  • To adapt the yeast URA3/5-FOA counter-selection system for bacterial interaction trap experiments.
  • To develop robust reporter systems for bacterial two-hybrid assays.

Main Methods:

  • Development of two URA3 reporter systems for bacterial counter-selection: a single copy F' episome reporter and a co-cistronic HIS3-URA3 reporter vector.
  • Utilizing the HIS3-URA3 reporter for both positive and negative selections in bacterial strains.

Main Results:

Related Experiment Videos

  • Successful adaptation of the URA3/5-FOA system for bacterial counter-selection.
  • Demonstration of robust counter-selection using the developed reporter systems.
  • The HIS3-URA3 reporter proved versatile for both positive and negative selection strategies.

Conclusions:

  • The adapted URA3/5-FOA system enhances the utility of bacterial two-hybrid assays.
  • These reagents provide a valuable alternative to yeast-based two-hybrid systems for studying macromolecular interactions in bacteria.