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Related Experiment Videos

A gateway-compatible yeast one-hybrid system.

Bart Deplancke1, Denis Dupuy, Marc Vidal

  • 1Program in Gene Function and Expression, University of Massachusetts Medical School, Worcester, Massachusetts 01605, USA.

Genome Research
|October 19, 2004
PubMed
Summary
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A new Gateway-compatible yeast one-hybrid system rapidly identifies transcription factor (TF)-DNA interactions. This tool aids in deciphering gene regulation and understanding differential gene expression by mapping protein-DNA binding.

Area of Science:

  • Molecular Biology
  • Genetics
  • Bioinformatics

Background:

  • Microarrays generate gene expression data but do not reveal underlying transcription regulatory mechanisms.
  • Identifying transcription factor (TF)-DNA interactions is crucial for understanding differential gene expression.
  • TF binding to cis-regulatory elements in gene promoters controls transcription.

Purpose of the Study:

  • To develop a high-throughput method for identifying protein-DNA interactions.
  • To create a Gateway-compatible yeast one-hybrid (Y1H) system for large-scale TF-DNA interaction discovery.
  • To validate the Y1H system using known TF-promoter interactions and discover novel interactions.

Main Methods:

  • Development of a Gateway-compatible yeast one-hybrid (Y1H) system.

Related Experiment Videos

  • Utilizing small DNA elements and large gene promoters as DNA baits.
  • Screening using two complementary TF libraries against promoter baits.
  • Validation of identified interactions using luciferase reporter assays in mammalian cells.

    • Main Results:

    • The Y1H system successfully detected approximately 40% of previously reported TF-promoter interactions.
    • Novel potentially interacting TFs were identified for each tested promoter.
    • Several Y1H-identified interactions were recapitulated in mammalian cells via luciferase assays.

    Conclusions:

    • The Gateway-compatible Y1H system enables rapid, large-scale identification of protein-DNA interactions.
    • This Y1H system is a valuable tool for deciphering transcription regulatory networks.
    • The method facilitates a deeper understanding of gene regulation and differential gene expression.