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MetabolomicsPlasmid-encoded toxin defence mediates mutualistic microbial interactions

Gut environments harbour dense microbial ecosystems in which plasmids are widely distributed. Plasmids facilitate the exchange of genetic material among microorganisms while enabling the transfer of a diverse array of accessory functions. However, their precise impact on microbial community compo...

2023-08-10 | MTBLS7248 | MetaboLights
MetabolomicsSeed Metabolome Analysis of a Transgenic Rice Line Expressing Cholera Toxin B-subunit
Rice (Oryza sativa L.) is a candidate crop for production of plant-based vaccines by genetic engineering technologies. MucoRice-CTB has been developed as a rice-seed-based vaccine against cholera by transgenic expression of modified cholera toxin B-subunit (CTB) under the RNA interference (RNAi)-med...
2017-08-30 | MTBLS437 | MetaboLights
MetabolomicsWe characterize the anti-phage function of a type IV TA system, ShosTA toxin-antitoxin system provides phage defense via DNA damage and repair
Widespread in bacteria and archaea, Toxin-antitoxin (TA) systems have been recently demonstrated to function in phage defense. Here we characterize the anti-phage function of a type IV TA system, ShosTA. Using structural and biochemical approaches, we show that ShosT couples phosphoribosyltransferas...
2025-02-17 | MTBLS11212 | MetaboLights
TranscriptomicsReceptors are affected by selection with each Bacillus thuringiensis israelensis Cry toxin but not with the full Bti mixture in Aedes aegypti
Bacillus thuringiensis israelensis (Bti) toxins are increasingly used for mosquito control, but little is known about the precise mode of action of each of these toxins, and how they interact to kill mosquito larvae. By using RNA sequencing, we investigated change in gene transcription level and pol...
ORGANISM(S): Aedes aegypti 
2019-05-16 | E-MTAB-7970 | biostudies-arrayexpress
TranscriptomicsRNA-seq for identifying toxin MazF and MqsR cleavage sites in toxin expression and subsequent recovery cultures of Escherichia coli (mRNA and ncRNA excluding rRNA)
Bacterial toxin-antitoxin systems are thought to help bacteria to reduce their metabolism in various stressful conditions. Many toxins of the bacterial toxin-antitoxin systems are ribonucleases. Such toxins have been mostly viewed as degraders of mRNA, however recently it was demonstrated that they ...
ORGANISM(S): Escherichia coli K-12 
2018-10-11 | E-MTAB-6993 | biostudies-arrayexpress
TranscriptomicsM. smegmatis vapBC::aphA-3 M-NM-^TvapBC mutant (JR121) harboring tetracycline inducible vector pMind containing the vapBC operon (pJR230) and the pMind vector containing the vapC toxin gene (pJR29)
Transcriptional profiling of M. smegmatis JR121 expressing VapC and VapBC grown in flasks on Hartmans de Bont medium supplemented with 0.2% glycerol Comparing transcriptional response of strain JR121 to conditional expression of VapC toxin compared with the expression of VapBC complex. Biological re...
ORGANISM(S): Mycobacterium smegmatis 
2012-06-14 | E-GEOD-29631 | biostudies-arrayexpress
TranscriptomicsTranscription profiling of human cells treated with Bacillus anthracis lethal toxin (LT)-intoxicated HUVECs monolayers
We have analyzed the variation of transcriptome of HUVECs intoxicated by the lethal toxin of Bacillus anthracis at 4 and 8 hours Experiment Overall Design: Three experimental conditions with two biological replicates for the control condition corresponding to untreated HUVEC monolayer. RNA were extr...
ORGANISM(S): Homo sapiens 
2010-01-29 | E-GEOD-12131 | biostudies-arrayexpress
TranscriptomicsTranscriptional responses of murine macrophages to the adenylate cyclase toxin of Bordetella pertussis
Three different recombinant forms of CyaA were used to investigate transcriptional responses of murine bone marrow-derived macrophages (BMDMs) using Affymetrix Mouse Genome Genechips. These forms were enzymically active, invasive CyaA, nonenzymically active, invasive CyaA (CyaA*) and non-enzymically...
ORGANISM(S): Mus musculus 
2013-09-22 | E-GEOD-51075 | biostudies-arrayexpress
ProteomicsIdentification of Unknown Biological Toxin Protein Using Mass Spectrometry: A Case Study on De Novo Sequencing of Ricin
Currently, the genomes of many toxin proteins remain unsequenced. Characterizing these toxin proteins and their active peptide segments is crucial for the development of detoxification agents and for discovering proteins with potential therapeutic applications. Existing methods for identifying and d...
ORGANISM(S): Ricinus communis 
2025-12-01 | PXD061213 | Pride
Unknown biological toxin protein Heuristic denovo protein sequencing Ricin toxin De novo sequencing Mass spectrometry 
TranscriptomicsTranscription profiling of human HeLa cells treated with major listerial toxin listeriolysin
Upon infection, pathogens reprogram host gene expression. In eukaryotic cells, genetic reprogramming is induced by the concerted activation/repression of transcription factors and various histone modifications that control DNA accessibility in chromatin. We report here that the bacterial pathogen, ...
ORGANISM(S): Homo sapiens 
2008-04-01 | E-MEXP-1078 | biostudies-arrayexpress
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