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Updated: Feb 1, 2026
12:05
RIBO-seq in Bacteria: a Sample Collection and Library Preparation Protocol for NGS Sequencing
Published on: August 7, 2021
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FASTBAC-Seq: Functional Analysis of Toxin-Antitoxin Systems in Bacteria by Deep Sequencing
Sara Masachis1, Nicolas J Tourasse1, Sandrine Chabas1
1ARNA Laboratory, INSERM U1212, CNRS UMR 5320, University of Bordeaux, Bordeaux, France.
Methods in Enzymology
|December 4, 2018
Summary
We developed FASTBAC-Seq, a new method to rapidly identify bacterial toxin-antitoxin (TA) system mutations. This approach accurately characterizes TA systems, like those in Helicobacter pylori, aiding gene regulation studies.
Area of Science:
- Microbiology
- Genomics
- Molecular Biology
Background:
- The increasing number of sequenced bacterial genomes reveals numerous novel toxin-antitoxin (TA) systems.
- Functional characterization of TA systems is difficult, often relying on overexpression vectors that can yield inaccurate in vivo data.
Purpose of the Study:
- To develop a novel, systematic approach for the functional analysis of bacterial TA systems.
- To apply this method to characterize a type I TA system in Helicobacter pylori.
Main Methods:
- FASTBAC-Seq (Functional AnalysiS of Toxin-Antitoxin Systems in BACteria by Deep Sequencing) combines phenotypic selection with next-generation sequencing.
- This method enables the identification of loss-of-function mutations in toxin genes with nucleotide resolution.
Main Results:
- FASTBAC-Seq was successfully applied to characterize a type I TA system (aapA/IsoA family) on the Helicobacter pylori chromosome.
- The study identified specific mutations affecting TA system function.
Conclusions:
- FASTBAC-Seq is a powerful tool for the rapid functional characterization of bacterial TA systems.
- This approach can reveal critical insights into bacterial gene expression regulation.
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