Benzoic Acid-Inducible Gene Expression in Mycobacteria

Conditional expression is a powerful tool to investigate the role of bacterial genes. Here, we adapt the Pseudomonas putida-derived positively regulated XylS/Pm expression system to control inducible gene expression in Mycobacterium smegmatis and Mycobacterium tuberculosis, the causative agent of hu...

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Veröffentlicht in:PloS one 2015-09, Vol.10 (9), p.e0134544-e0134544
Hauptverfasser: Dragset, Marte S, Barczak, Amy K, Kannan, Nisha, Mærk, Mali, Flo, Trude H, Valla, Svein, Rubin, Eric J, Steigedal, Magnus
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container_end_page e0134544
container_issue 9
container_start_page e0134544
container_title PloS one
container_volume 10
creator Dragset, Marte S
Barczak, Amy K
Kannan, Nisha
Mærk, Mali
Flo, Trude H
Valla, Svein
Rubin, Eric J
Steigedal, Magnus
description Conditional expression is a powerful tool to investigate the role of bacterial genes. Here, we adapt the Pseudomonas putida-derived positively regulated XylS/Pm expression system to control inducible gene expression in Mycobacterium smegmatis and Mycobacterium tuberculosis, the causative agent of human tuberculosis. By making simple changes to a Gram-negative broad-host-range XylS/Pm-regulated gene expression vector, we prove that it is possible to adapt this well-studied expression system to non-Gram-negative species. With the benzoic acid-derived inducer m-toluate, we achieve a robust, time- and dose-dependent reversible induction of Pm-mediated expression in mycobacteria, with low background expression levels. XylS/Pm is thus an important addition to existing mycobacterial expression tools, especially when low basal expression is of particular importance.
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subjects Acids
Bacteria
Bacterial Proteins - biosynthesis
Bacterial Proteins - genetics
Benzoic acid
Benzoic Acid - pharmacology
Binding sites
Cancer
Drug dosages
Drug resistance
E coli
Escherichia coli
Gene expression
Gene Expression Regulation, Bacterial
Genetic aspects
Genetic Vectors
Gram-positive bacteria
Humans
Immunology
Infectious diseases
Inflammation
Medical research
Medicine
Mycobacteria
Mycobacterium smegmatis
Mycobacterium smegmatis - genetics
Mycobacterium smegmatis - pathogenicity
Mycobacterium tuberculosis
Mycobacterium tuberculosis - genetics
Mycobacterium tuberculosis - pathogenicity
Physiological aspects
Promoter Regions, Genetic
Pseudomonas putida
Pseudomonas putida - genetics
Public health
Science
Trans-Activators - biosynthesis
Trans-Activators - genetics
Tuberculosis
Tuberculosis - genetics
Tuberculosis - microbiology
title Benzoic Acid-Inducible Gene Expression in Mycobacteria
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