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Genome-wide Mapping of Protein-DNA Interactions with ChEC-seq in Saccharomyces cerevisiae
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High-resolution protein-protein interaction mapping using all-versus-all sequencing (AVA-Seq).

Simeon S Andrews1, Stephanie Schaefer-Ramadan1, Nayra M Al-Thani1

  • 1Department of Genetic Medicine, Weill Cornell Medicine in Qatar, Doha 24144, Qatar.

The Journal of Biological Chemistry
|June 12, 2019
PubMed
Summary

We developed AVA-Seq, a novel method using next-generation sequencing (NGS) to map protein-protein interactions more efficiently. This technique overcomes limitations of traditional two-hybrid systems for comprehensive proteome-wide interaction studies.

Keywords:
Helicobacter pylorifunctional genomicsinteractomemolecular geneticsnext generation sequencingprotein-protein interactionstructure-functiontwo-hybrid

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Area of Science:

  • Molecular Biology
  • Genomics
  • Biochemistry

Background:

  • Two-hybrid systems are crucial for studying protein-protein interactions and gene function.
  • Traditional two-hybrid methods are inefficient and have not fully integrated next-generation sequencing (NGS) advancements.
  • Current methods often employ one-versus-all screening, limiting throughput.

Purpose of the Study:

  • To develop an improved screening method for protein-protein interactions.
  • To leverage next-generation sequencing (NGS) for high-throughput interaction mapping.
  • To overcome bottlenecks in traditional two-hybrid systems.

Main Methods:

  • Developed a convergent fusion vector for simultaneous bait and prey amplification.
  • Implemented all-versus-all sequencing (AVA-Seq) using paired-end NGS.
  • Utilized open reading frame (ORF) selection and protein fragments for enhanced resolution.

Main Results:

  • AVA-Seq enables efficient, high-resolution mapping of protein-protein interactions.
  • The method integrates NGS to streamline the screening process.
  • Demonstrated system capabilities and limitations using known human protein interactions.

Conclusions:

  • AVA-Seq offers a powerful, scalable approach for protein interaction discovery.
  • This method has potential for both focused interaction mapping and large-scale proteome studies.
  • Provides a framework for future advancements in high-throughput interactomics.