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Items: 1 to 20 of 25964

1.

Functional CRISPR-Cas9 knockout screening of the genetic determinants of human fibroblast migration propensity

(Submitter supplied) Directional cell migration plays a central role in a wide range of physiological and pathological conditions, such as inflammation and cancer. Steps involved in cell migration include cell polarization, formation of membrane protrusions at the cell front side and adhesion disassembly at the rear side, and a general cytoskeletal rearrangement. However, there are cell-specific and context-specific molecular events acting in the process. more...
Organism:
Escherichia coli; Homo sapiens
Type:
Other
Platforms:
GPL11154 GPL14548
11 Samples
Download data: TXT
Series
Accession:
GSE266226
ID:
200266226
2.

Adenine effect on Enterohemorraghic E.coli

(Submitter supplied) Previous experiments have shown that E. feacalis increases EHEC virulence by secreting adenine, this RNAseq aims to understand the molecular mechanism underlaying adenine role on EHEC
Organism:
Escherichia coli
Type:
Expression profiling by high throughput sequencing
Platform:
GPL25368
20 Samples
Download data: TXT
Series
Accession:
GSE244178
ID:
200244178
3.

TnpB homologs exapted from transposons are RNA-guided transcription factors

(Submitter supplied) Transposon-encoded tnpB and iscB genes encode RNA-guided DNA nucleases that promote their own selfish spread through targeted DNA cleavage and homologous recombination. These widespread gene families were repeatedly domesticated over evolutionary timescales, leading to the emergence of diverse CRISPR-associated nucleases including Cas9 and Cas12. We set out to test the hypothesis that TnpB nucleases may have also been repurposed for novel, unexpected functions other than CRISPR-Cas. more...
Organism:
Enterobacter cloacae; Escherichia coli; Enterobacter sp. BIDMC93
Type:
Genome binding/occupancy profiling by high throughput sequencing; Expression profiling by high throughput sequencing; Other
4 related Platforms
51 Samples
Download data: BED, BW, XLSX
Series
Accession:
GSE245749
ID:
200245749
4.

Robust Host Engineering: Enhancing Escherichia coli´s Abiotic Stress Resistance through Ornithine Lipid Membrane Modification

(Submitter supplied) Transcriptome analysis revealed that strains had differentially expressed stress and membrane-related genes compared to the control strain
Organism:
Escherichia coli
Type:
Expression profiling by high throughput sequencing
Platform:
GPL25368
8 Samples
Download data: TXT, XLSX
Series
Accession:
GSE233657
ID:
200233657
5.

Motility-activating mutations upstream of flhDC reduce acid shock survival of Escherichia coli

(Submitter supplied) Many neutralophilic bacterial species try to evade acid stress with an escape strategy, which is reflected in the increased expression of genes coding for flagellar components. Extremely acid-tolerant bacteria, such as Escherichia coli, survive the strong acid stress, e.g. in the stomach of vertebrates. Recently, we were able to show that the induction of motility genes in E. coli is strictly dependent on the degree of acid stress, i.e. more...
Organism:
Escherichia coli str. K-12 substr. MG1655; Escherichia coli BW25113
Type:
Expression profiling by high throughput sequencing
Platforms:
GPL32899 GPL34252
12 Samples
Download data: XLSX
Series
Accession:
GSE260455
ID:
200260455
6.

A new reagent for in vivo structure probing of RNA G and U residues that improves RNA structure prediction alone and combined with DMS

(Submitter supplied) A key to understanding the roles of RNA in regulating gene expression is knowing their structures in vivo. One way to obtain this information is through probing structures of RNA with chemicals. To probe RNA structure directly in cells, membrane-permeable reagents that modify the Watson-Crick (WC) face of unpaired nucleotides can be used. While dimethyl sulfate (DMS) has led to substantial insight into RNA structure, it has limited nucleotide specificity in vivo, with WC face reactivity only at Adenine (A) and Cytosine (C) at neutral pH. more...
Organism:
Escherichia coli
Type:
Other
Platform:
GPL32081
33 Samples
Download data: TXT
Series
Accession:
GSE254895
ID:
200254895
7.

A cell-free pipeline for recreating methylation patterns radically enhances DNA transformation in bacteria

(Submitter supplied) The bacterial world offers diverse strains for understanding medical and environmental processes and for engineering synthetic-biology chasses. However, genetically manipulating these strains has faced a long-standing bottleneck: how to efficiently transform DNA. Here we report IMPRINT, a generalized, rapid and scalable approach to overcome DNA restriction, a prominent barrier to transformation. IMPRINT utilizes cell-free systems to express DNA methyltransferases from the bacterial host’s restriction-modification systems. more...
Organism:
Escherichia coli; Bifidobacterium breve
Type:
Other
Platforms:
GPL25368 GPL33564
7 Samples
Download data: TSV
Series
Accession:
GSE240651
ID:
200240651
8.

RpoS acts as a global repressor of virulence gene expression in Escherichia coli O104:H4 and enteroaggregative E. coli

(Submitter supplied) In 2011, in Germany, Escherichia coli O104:H4 caused the enterohemorrhagic E. coli (EHEC) outbreak with the highest incidence rate of hemolytic uremic syndrome. This pathogen carries an exceptionally potent combination of EHEC- and enteroaggregative E. coli (EAEC)-specific virulence factors. Here, we identified an E. coli O104:H4 isolate that carried a single nucleotide polymorphism (SNP) in the start codon (ATG>ATA) of rpoS, encoding the alternative sigma factor S. more...
Organism:
Escherichia coli
Type:
Expression profiling by high throughput sequencing
Platform:
GPL21222
12 Samples
Download data: CSV
Series
Accession:
GSE243699
ID:
200243699
9.

The modification landscape of P. aeruginosa tRNAs

(Submitter supplied) RNA modifications have a substantial impact on tRNA function. While modifications in the anticodon loop play an important role in translational fidelity, modifications in the tRNA core influence tRNA structural stability. In bacteria, tRNA modifications play important roles in the stress response and expression of virulence factors. While tRNA modifications are well characterized in a few model organisms, our knowledge of tRNA modifications in human pathogens, such as Pseudomonas aeruginosa is lacking. more...
Organism:
Pseudomonas aeruginosa PA14; Escherichia coli BW25113
Type:
Non-coding RNA profiling by high throughput sequencing; Expression profiling by high throughput sequencing
Platforms:
GPL25344 GPL33546 GPL30881
27 Samples
Download data: CSV, FA, TXT
Series
Accession:
GSE236676
ID:
200236676
10.

Dual Barcode is Essential for the Specificity of DSB Repair Capture

(Submitter supplied) We discovered that PCR-mediated template switching poses a significant challenge in ensemble tagged PCR, particularly in the template sequences with high similarities, which we successfully addressed by introducing a dual barcode. Template switching presents in repair sequencing (repair seq) and severely interfere the interpretation of the association between repair outcomes and the sgRNA in the vicinity. more...
Organism:
Homo sapiens; Escherichia coli
Type:
Other
Platforms:
GPL15520 GPL16085 GPL25368
30 Samples
Download data: TXT
Series
Accession:
GSE253191
ID:
200253191
11.

Bacterial Stress Bodies – Ancestral Condensates Regulating RNA Turnover and Protein Translation

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.
Organism:
Escherichia coli str. K-12 substr. MG1655; Escherichia coli K-12
Type:
Expression profiling by high throughput sequencing; Other
Platforms:
GPL30519 GPL33080
102 Samples
Download data: BEDGRAPH
Series
Accession:
GSE241322
ID:
200241322
12.

Bacterial Stress Bodies – Ancestral Condensates Regulating RNA Turnover and Protein Translation III

(Submitter supplied) How biomolecules condense to organize subcellular processes is of fundamental significance. Nitrogen-starved Escherichia coli form a single condensate, which we termed Bacterial Stress Body (BSB). Its formation is triggered by long polyphosphate chains, which scaffold the RNA chaperone Hfq into high molecular weight complexes with distinct sequence-specific RNA and DNA binding properties. We show that polyP is crucial for the stabilization of select RNAs, the sequestration of translation- and RNA metabolism-associated proteins that likely stall protein synthesis, and the specific nucleoid-associated localization of BSBs. more...
Organism:
Escherichia coli str. K-12 substr. MG1655
Type:
Other
Platform:
GPL33080
42 Samples
Download data: CSV
Series
Accession:
GSE241321
ID:
200241321
13.

Bacterial Stress Bodies – Ancestral Condensates Regulating RNA Turnover and Protein Translation II

(Submitter supplied) How biomolecules condense to organize subcellular processes is of fundamental significance. Nitrogen-starved Escherichia coli form a single condensate, which we termed Bacterial Stress Body (BSB). Its formation is triggered by long polyphosphate chains, which scaffold the RNA chaperone Hfq into high molecular weight complexes with distinct sequence-specific RNA and DNA binding properties. We show that polyP is crucial for the stabilization of select RNAs, the sequestration of translation- and RNA metabolism-associated proteins that likely stall protein synthesis, and the specific nucleoid-associated localization of BSBs. more...
Organism:
Escherichia coli str. K-12 substr. MG1655
Type:
Expression profiling by high throughput sequencing
Platform:
GPL33080
56 Samples
Download data: CSV
Series
Accession:
GSE241319
ID:
200241319
14.

Bacterial Stress Bodies – Ancestral Condensates Regulating RNA Turnover and Protein Translation I

(Submitter supplied) How biomolecules condense to organize subcellular processes is of fundamental significance. Nitrogen-starved Escherichia coli form a single condensate, which we termed Bacterial Stress Body (BSB). Its formation is triggered by long polyphosphate chains, which scaffold the RNA chaperone Hfq into high molecular weight complexes with distinct sequence-specific RNA and DNA binding properties. We show that polyP is crucial for the stabilization of select RNAs, the sequestration of translation- and RNA metabolism-associated proteins that likely stall protein synthesis, and the specific nucleoid-associated localization of BSBs. more...
Organism:
Escherichia coli K-12
Type:
Other
Platform:
GPL30519
4 Samples
Download data: BEDGRAPH
Series
Accession:
GSE241317
ID:
200241317
15.

Deep sequencing and fitness calculation for plasmids carrying the CREATE cassette from the enriched tolerant strains under different pressures by using Illumina protocol

(Submitter supplied) We report using global regulator libraries based on the CRISPR-enabled trackable genome engineering (CREATE) method to engineer tolerance against multiple inhibitors in Escherichia coli. Deep mutagenesis libraries were rationally designed, constructed, and screened to target 34,340 mutations across 23 global regulators.These libraries were divided into G1, G2, G3, G4 and G5 sub-groups according to different gene functions (such as active sites, DNA binding sites, and predicted functional sites) . more...
Organism:
Escherichia coli str. K-12 substr. MG1655
Type:
Other
Platform:
GPL21117
5 Samples
Download data: TXT
Series
Accession:
GSE200448
ID:
200200448
16.

Metabolism of L-arabinose converges with virulence regulation to promote enteric pathogen fitness

(Submitter supplied) Role of L-arabinose on gene expression in E. coli O157:H7 TUV93-0 where CTRL samples were grown in the absence of L-arabinose and ARA samples were grown in the presence of L-arabinose.
Organism:
Escherichia coli O157:H7
Type:
Expression profiling by high throughput sequencing
Platform:
GPL34321
6 Samples
Download data: TXT
Series
Accession:
GSE262155
ID:
200262155
17.

ENVIRONMENT MODULATES PROTEIN HETEROGENEITY THROUGH TRANSCRIPTIONAL AND TRANSLATIONAL STOP CODON RECODING

(Submitter supplied) In order to systematically assess the frequency and origin of stop codon recoding events, we designed a library of reporters. We introduced premature stop codons into mScarlet that enabled high-throughput quantification of protein synthesis termination errors in E. coli using fluorescent microscopy. We found that under stress conditions, stop codon recoding may occur with a rate as high as 80%, depending on the nucleotide context, suggesting that evolution frequently samples stop codon recoding events. more...
Organism:
Escherichia coli str. K-12 substr. MG1655
Type:
Other
Platform:
GPL33229
13 Samples
Download data: BAM
Series
Accession:
GSE226936
ID:
200226936
18.

SOS Genes Are Rapidly Induced While Mutagenesis Is Temporally Regulated by Changes in Protein Activation and Nucleotide Pools After a Sub-lethal Dose of Ciprofloxacin in Escherichia coli

(Submitter supplied) The DNA damage inducible SOS response in bacteria serves to increase survival of the species. The SOS response first initiates error-free repair which is followed by error-prone repair. Here, we have employed a multi-omics approach to elucidate the temporal coordination of the SOS response using transcriptomics, signalomics, and metabolomics. Escherichia coli was grown in batch cultivation in bioreactors to ensure highly controlled conditions. more...
Organism:
Escherichia coli str. K-12 substr. MG1655
Type:
Expression profiling by high throughput sequencing
Platform:
GPL21117
42 Samples
Download data: CSV
Series
Accession:
GSE249682
ID:
200249682
19.

Impact of Multiple Antimicrobial Exposures on the Transfer Efficiency of Multidrug Resistance Plasmids in Salmonella enteric

(Submitter supplied) Antimicrobial exposure can potentially lead to increased antimicrobial resistance plasmid transfer. RNA sequencing data was collected from conjugal pairs of Salmonella enterica and Escherichia coli exposed or not exposed to tetracycline over a time course to determine differences in transcript numbers associated with conjugation and tetracycline exposure. The samples were sequenced on the Illumina HiSeq X10 platform with the 150-bp paired-end kit. more...
Organism:
Salmonella enterica; Escherichia coli J53
Type:
Expression profiling by high throughput sequencing
Platform:
GPL34283
24 Samples
Download data: XLSX
Series
Accession:
GSE261094
ID:
200261094
20.

A bioinformatic pipeline for analysis of M.EcoGII methylation footprint PacBio long-read sequence data

(Submitter supplied) Recent studies have combined DNA methyltransferase footprinting of genomic DNA in nuclei with long-read sequencing, resulting in detailed chromatin maps for multi-kilobase stretches of genomic DNA from one cell. Nucleosome footprints and nucleosome-depleted regions can be identified, yielding unprecedented information concerning their degree of correlation within the same cell. The enzyme of choice is M.EcoGII, which methylates adenines in any sequence context, potentially resulting in very high resolution. more...
Organism:
Saccharomyces cerevisiae; Escherichia coli
Type:
Other
Platforms:
GPL32099 GPL29643
12 Samples
Download data: BAM, BED, BIGWIG
Series
Accession:
GSE243114
ID:
200243114
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