Results 11 to 20 of about 18,233,686 (171)

Reassessing the Role of the Type II MqsRA Toxin-Antitoxin System in Stress Response and Biofilm Formation: mqsA Is Transcriptionally Uncoupled from mqsR

open access: yesmBio, 2019
Toxin-antitoxin (TA) systems are broadly distributed modules whose biological roles remain mostly unknown. The mqsRA system is a noncanonical TA system in which the toxin and antitoxins genes are organized in operon but with the particularity that the ...
Nathan Fraikin   +3 more
doaj   +2 more sources

The vapB-vapC operon of Acidovorax citrulli functions as a bona-fide toxin-antitoxin module [PDF]

open access: yesFrontiers in Microbiology, 2016
Toxin–antitoxin systems are commonly found on plasmids and chromosomes of bacteria and archaea. These systems appear as biscystronic genes encoding a stable toxin and a labile antitoxin, which protects the cells from the toxin’s activity. Under specific,
Reut eShavit   +4 more
doaj   +2 more sources

Toxin-Antitoxin Systems as Multilevel Interaction Systems

open access: yesToxins, 2014
Toxin-antitoxin (TA) systems are small genetic modules usually composed of a toxin and an antitoxin counteracting the activity of the toxic protein. These systems are widely spread in bacterial and archaeal genomes.
Nathalie Goeders, Laurence Van Melderen
doaj   +2 more sources

Characterization of HicAB toxin-antitoxin module of Sinorhizobium meliloti

open access: yesBMC Microbiology, 2019
Background Toxin-antitoxin (TA) systems are little genetic units generally composed of two genes encoding antitoxin and toxin. These systems are known to be involved in many functions that can lead to growth arrest and cell death.
Manon Thomet   +3 more
doaj   +2 more sources

Continuous Evolution System Based on Toxin-Antitoxin System Combined with Base Deaminase Accelerates the In Vivo Modification of Target Proteins. [PDF]

open access: yesAdv Sci (Weinh)
The promoted Escherichia coli‐assisted continuous evolution (PEACE) system operates through a stringent three step genetic circuit: target gene mutation via a deaminase–T7 RNA polymerase (T7 RNAP) fusion, coupling variant function to antitoxin expression, and growth based selection of surviving cells.
Zhang X   +10 more
europepmc   +2 more sources

Toxin-antitoxin cassettes identified by TA finder in investigated Salmonella strains with functional classification of candidate toxin and antitoxin proteins.

open access: yes, 2021
Toxin-antitoxin cassettes identified by TA finder in investigated Salmonella strains with functional classification of candidate toxin and antitoxin proteins.
Taruna Anand (828898)   +4 more
core   +1 more source

The coevolution of toxin and antitoxin genes drives the dynamics of bacterial addiction complexes and intragenomic conflict [PDF]

open access: yes, 2012
Bacterial genomes commonly contain 'addiction' gene complexes that code for both a toxin and a corresponding antitoxin. As long as both genes are expressed, cells carrying the complex can remain healthy.
Rankin, Daniel J.   +11 more
core   +1 more source

Crystal Structure of the Escherichia coli Fic Toxin-Like Protein in Complex with Its Cognate Antitoxin [PDF]

open access: yes, 2016
FIC domain proteins mediate post-translational modifications of target proteins, which typically results in their inactivation. Depending on the conservation of crucial active site residues, the FIC fold serves as structural scaffold for various ...
Stanger, Frédéric V.   +20 more
core   +2 more sources

The Bacillus cereus spoIIS programmed cell death system

open access: yesFrontiers in Microbiology, 2015
Programmed cell death in bacteria is generally associated with two¬ component toxin antitoxin systems. The SpoIIS toxin-antitoxin system, consisting of a membrane bound SpoIISA toxin and a small, cytosolic antitoxin SpoIISB, was originally identified in ...
Jana eMelnicakova   +3 more
doaj   +1 more source

An oxygen-sensitive toxin–antitoxin system

open access: yesNature Communications, 2016
Classical toxin–antitoxin systems in bacteria are based on silencing of a toxin by an antitoxin that, when inactivated, releases the toxin, resulting in a change in metabolism. Here, the authors characterize an oxygen-sensitive toxin–antitoxin system and
Oriol Marimon   +13 more
doaj   +1 more source

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