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Two-hybrid reporter vectors for gap repair cloning
Jennifer I Semple1, Graham Prime, Lise J Wallis
1MRC Rosalind Franklin Centre for Genomics Research, Cambridge, UK.
Biotechniques
|July 16, 2005
Summary
New yeast two-hybrid vectors streamline protein interaction discovery. These vectors use gap repair cloning and a color-based reporter system for efficient identification of protein interactions.
Area of Science:
- Molecular Biology
- Biochemistry
- Genetics
Background:
- Protein-protein interactions are crucial for cellular functions.
- The yeast two-hybrid (Y2H) system is a powerful tool for identifying these interactions.
- Existing Y2H methods can be labor-intensive and require specialized cloning techniques.
Purpose of the Study:
- To develop novel vectors for yeast two-hybrid analysis that simplify insert detection.
- To create a more efficient method for constructing Y2H bait and prey plasmids.
- To facilitate high-throughput screening of protein interactions.
Main Methods:
- Development of recombination cloning vectors incorporating GAL4 activation and binding domains.
- Utilizing gap repair cloning for insert integration into Y2H vectors.
- Employing an ADE2 reporter gene for color-based screening of positive clones (red colonies indicate insert presence, white colonies indicate empty vectors).
- Validation using known interacting proteins and subsequent library screens with mouse Mad212 and human Mccd1.
Main Results:
- Successfully developed and validated Y2H vectors that enable insert presence detection via colony color.
- Demonstrated the utility of these vectors in identifying known protein interactions.
- Identified putative novel interactions for mouse Mad212 and human Mccd1 through library screening.
Conclusions:
- The developed vectors offer a streamlined and efficient approach to yeast two-hybrid bait and prey construction.
- This method facilitates high-throughput screening, accelerating the discovery of protein interactions.
- These tools are valuable for researchers requiring large numbers of Y2H constructs.
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