High-resolution protein–protein interaction mapping using all-versus-all sequencing (AVA-Seq)

Simeon S. Andrews, Stephanie Ramadan, Nayra M. Al-Thani, Ikhlak Ahmed, Yasmin Ali Mohamoud, Joel Malek

Research output: Contribution to journalArticle

Abstract

Two-hybrid systems can be used for investigating protein–protein interactions and may provide important information about gene products with unknown function. Despite their success in mapping protein interactions, two-hybrid systems have remained mostly untouched by improvements in next-generation DNA sequencing. The two-hybrid systems rely on one-versus-all methods in which each bait is sequentially screened against an entire library. Here, we developed a screening method that joins both bait and prey as a convergent fusion into one bacterial plasmid vector that can then be amplified and paired-end sequencing by next-generation sequencing (NGS). Our method enables all-versus-all sequencing (AVA-Seq) and utilizes NGS to remove multiple bottlenecks of the two-hybrid system. AVA-Seq allows for high-resolution protein–protein interaction mapping of a small set of proteins and has the potential for lower-resolution mapping of entire proteomes. Features of the system include ORF selection to improve efficiency, high bacterial transformation efficiency, a convergent fusion vector to allow paired-end sequencing of interactors, and the use of protein fragments rather than full-length proteins to better resolve specific protein contact points. We demonstrate the system’s strengths and limitations on a set of proteins known to interact in humans and provide a framework for future large-scale projects.

Original languageEnglish
Pages (from-to)11549-11558
Number of pages10
JournalJournal of Biological Chemistry
Volume294
Issue number30
DOIs
Publication statusPublished - 1 Jan 2019

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Hybrid systems
Proteins
Protein Interaction Mapping
Bacterial Transformation
Fusion reactions
Proteome
DNA Sequence Analysis
Open Reading Frames
Point contacts
Libraries
Plasmids
Screening
Genes
DNA

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Cell Biology

Cite this

High-resolution protein–protein interaction mapping using all-versus-all sequencing (AVA-Seq). / Andrews, Simeon S.; Ramadan, Stephanie; Al-Thani, Nayra M.; Ahmed, Ikhlak; Ali Mohamoud, Yasmin; Malek, Joel.

In: Journal of Biological Chemistry, Vol. 294, No. 30, 01.01.2019, p. 11549-11558.

Research output: Contribution to journalArticle

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