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Items: 1 to 20 of 1242

1.

Exploring the Respective Contributions of DNA Polymerase Proofreading and Mismatch Repair in the Shaping of Spontaneous Mutation Rates.

(Submitter supplied) The spontaneous mutation rate is a crucial parameter in molecular evolution which is maintained very low. To better characterize how proofreading activity of the DNA polymerase and Mismatch repair (MMR) which are ubiquitous in all kingdoms of life shape a mutational landscape we built B. subtilis 168-derived strains allowing conditional inactivation of either one or both of these two error reparation mechanisms. more...
Organism:
Bacillus subtilis subsp. subtilis str. 168
Type:
Expression profiling by high throughput sequencing
Platform:
GPL30358
12 Samples
Download data: CSV
Series
Accession:
GSE239804
ID:
200239804
2.

YfmR is a translation factor that prevents ribosome stalling and cell death in the absence of EF-P

(Submitter supplied) Protein synthesis is performed by the ribosome and a host of highly conserved elongation factors. Elongation factor P (EF-P) prevents ribosome stalling at difficult-to-translate sequences, particularly polyproline tracts. In bacteria, phenotypes associated with efp deletion range from modest to lethal, suggesting that some species encode an additional translation factor that has similar function to EF-P. more...
Organism:
Bacillus subtilis subsp. subtilis str. 168
Type:
Other
Platform:
GPL23473
6 Samples
Download data: XLSX
Series
Accession:
GSE249203
ID:
200249203
3.

CRISPRi screen for a-amylase yield improvements in Bacillus subtilis

(Submitter supplied) Our study showed that optimizing ncRNA expression can increase or lower the yield of alpha-amylase enzyme production in Bacillus subtilis while revealing a range of potentially novel ncRNAs.
Organism:
Bacillus subtilis subsp. subtilis str. 168
Type:
Expression profiling by high throughput sequencing
Platform:
GPL21796
8 Samples
Download data: FNA, GFF, TSV
Series
Accession:
GSE179570
ID:
200179570
4.

Transcriptional profiling along lineages of Bacillus subtilis strains with increasingly reduced genomes.

(Submitter supplied) To investigate which cellular functions may be perturbed along the branches of a synthetic evolutionary tree obtained by incremental deletions of large genomic regions, we subjected six Bacillus subtilis strains to transcriptome profiling. These six strains are : MS (~3.98 Mbp), which is already a genome-reduced derivative of the B. subtilis 168 (~4.22 Mbp) and the root of our evolutionary tree; MGP254 (~2.73 Mbp), the farthest genome-reduced strain; MGP234 (~2.81 Mbp), another terminal leaf in our tree; MGP181 (~2.87 Mb) and MGP192 (~2.85 Mbp), two intermediate strains in the ancestor lineage common to MGP254 and MGP234; and finally MGP229 (2.82 Mbp), an intermedidate strain between MGP192 and MGP254 (i.e. more...
Organism:
Bacillus subtilis subsp. subtilis str. 168
Type:
Expression profiling by genome tiling array
Platform:
GPL15150
12 Samples
Download data: PAIR
Series
Accession:
GSE207089
ID:
200207089
5.

Elongation Factor P is important for sporulation initiation

(Submitter supplied) The universally conserved protein Elongation Factor P facilitates translation at amino acids that form peptide bonds with low efficiency, particularly poly-proline tracts. Despite its wide conservation, it is not essential in most bacteria and its physiological role remains unclear. Here, we show that EF-P affects the process of sporulation initiation in the bacterium Bacillus subtilis. We observe that lack of EF-P delays expression of sporulation-specific genes. more...
Organism:
Bacillus subtilis subsp. subtilis str. 168
Type:
Expression profiling by high throughput sequencing; Other
Platform:
GPL21344
4 Samples
Download data: WIG
Series
Accession:
GSE222121
ID:
200222121
6.

Magnesium modulates Bacillus subtilis cell division frequency

(Submitter supplied) By chance, we discovered a window of extracellular magnesium (Mg2+) availability that modulates Bacillus subtilis division frequency without affecting growth rate. In this window, cells grown with excess Mg2+ produce shorter cells than those grown in unsupplemented medium. The Mg2+-responsive adjustment in cell length occurs in both rich and minimal media and in domesticated and undomesticated strains. more...
Organism:
Bacillus subtilis subsp. subtilis str. 168
Type:
Expression profiling by high throughput sequencing
Platform:
GPL24119
6 Samples
Download data: TXT
Series
Accession:
GSE219221
ID:
200219221
7.

Comparison of Corynebacterium glutamicum wild type with C. glutamicum ChrS-Ala245fs

(Submitter supplied) In an evolutionary experiment on high hemin concentrations, a frameshift mutation in the ChrS gene was figured out to be striking in survival at high hemin concentrations (Ala245fs). Apart from high upregulation of heme exporter hrtB, microarrays should reveal further different controlled genes compared to the WT.
Organism:
Corynebacterium glutamicum; Bacillus subtilis subsp. subtilis str. 168; Gluconobacter oxydans 621H; Escherichia coli str. K-12 substr. MG1655; Pseudomonas putida KT2440
Type:
Expression profiling by array
Platform:
GPL32387
3 Samples
Download data: GPR
Series
Accession:
GSE206796
ID:
200206796
8.

Transcriptomic impact of PrsA over-expression during fed-batch Bacillus subtilis alpha-amylase fermentation

(Submitter supplied) The production of alpha-amylase (AMY) enzyme in Bacillus subtilis at a high rate leads to accumulation of unfolded AMY, which causes secretion stress. The over-expression of the PrsA chaperon aids the enzyme folding and thus reduces stress. Stress pathways are complex and intertwined in regulation of a variety of cellular mechanism; for instance, PrsA over-expression leads to reduced cell growth. To capture an overview over the impacted mechanisms, we analyze the transcriptomic changes during fed-batch AMY fermentation between a PrsA over-expressing strain and a control in a time-series RNA-seq experiment (n=3, 6 timepoints). more...
Organism:
Bacillus subtilis subsp. subtilis str. 168
Type:
Expression profiling by high throughput sequencing
Platform:
GPL30999
41 Samples
Download data: BED, FNA, GFF, TSV
Series
Accession:
GSE189556
ID:
200189556
9.

Transcriptional Response to Inducers for E. coli and B. subtilis

(Submitter supplied) Sequencing technologies, in particular RNASeq, have become critical tools in the design, build, test, learn cycle for synthetic biology. They provide a better understanding of synthetic designs and they help identify ways to improve and select designs. While this data is beneficial to design, its collection and analysis is a complex, multi-step process that has implications both on discovery and reproducibility of experiments. more...
Organism:
Escherichia coli str. K-12 substr. MG1655; Bacillus subtilis subsp. subtilis str. 168
Type:
Expression profiling by high throughput sequencing
Platforms:
GPL26592 GPL30358
1344 Samples
Download data: CSV
Series
Accession:
GSE206047
ID:
200206047
10.

Transcriptome analysis of miniBacillus PG10 and its parental strain B. subtilis 168

(Submitter supplied) miniBacillus PG10 lacks ~36% of dispensible genentic material and has been derived from B. subtilis 168 (Reuß et al. 2017; PMID: 27965289). We performed RNA-seq analysis on mid-to-late exponential cultures and stationary phase cultures that were grown in LB medium. We specifically analyzed differential gene expression levels of lipid metabolic genes to compare to the lipidomic profiles of the two strains.
Organism:
Bacillus subtilis subsp. subtilis str. 168
Type:
Expression profiling by high throughput sequencing
Platform:
GPL21796
12 Samples
Download data: WIG
Series
Accession:
GSE169409
ID:
200169409
11.

Temporal transcriptome analysis of Bacillus subtilis NDmed in the submerged biofilm model

(Submitter supplied) Investigation of the kinetics of whole genome gene expression level changes in Bacillus subtilis NDmed strain during formation of submerged biofilm and pellicle. The Bacillus subtilis NDmed strain analyzed in this study is able to form thick and highly structured submerged biofilms as described in Bridier et al., (2011) The Spatial Architecture of Bacillus subtilis Biofilms Deciphered Using a Surface-Associated Model and In Situ Imaging. more...
Organism:
Bacillus subtilis; Bacillus subtilis subsp. subtilis str. 168
Type:
Expression profiling by array
Platform:
GPL21981
7 Samples
Download data: TXT
Series
Accession:
GSE190460
ID:
200190460
12.

Transcriptomic analysis of wild-type and mutant strains of Bacillus subtilis 168

(Submitter supplied) The transcriptional profiling and global gene expression analysis revealed a higher globally gene expression level in BS-F91L or BS-Q150W strains with enhanced N6-methyladenosine deaminase activity. The differentially expressed genes categorized by GO, KEGG and COG analysis, highlighted the crucial roles of Bsu06560 in regulating N6-methyladenosine metabolism and further influenced a myriad of biological processes in multiple layers, including transcription, translation, metabolites regulations, and cellular signal transduction.
Organism:
Bacillus subtilis subsp. subtilis str. 168
Type:
Expression profiling by high throughput sequencing
Platform:
GPL30358
12 Samples
Download data: TXT
Series
Accession:
GSE179533
ID:
200179533
13.

RqcH and RqcP catalyze processive poly-alanine synthesis

(Submitter supplied) In the cell, stalled ribosomes are rescued through ribosome-associated protein quality-control (RQC) pathways. We demonstrate that RqcH is responsible for tRNAAla selection during RQC elongation, whereas RqcP lacks any tRNA specificity. The ribosomal protein uL11 is crucial for RqcH, but not RqcP, recruitment to the 50S subunit, and B. subtilis lacking uL11 are RQC-deficient. Through mutational mapping, we identify critical residues within RqcH and RqcP that are important for interaction with the P-site tRNA and/or the 50S subunit. more...
Organism:
Enterococcus faecalis; Bacillus subtilis subsp. subtilis str. 168
Type:
Non-coding RNA profiling by array
Platform:
GPL30116
19 Samples
Download data: TXT
Series
Accession:
GSE174254
ID:
200174254
14.

Comparison of Corynebacterium glutamicum ATCC 13032 + pAN6-cg1978 with ATCC 13032 + pAN6

(Submitter supplied) Investigation of the impact of an overexpression of cg1978 on gene expression under standard conditions (CGXII-Glucose)
Organism:
Escherichia coli; Corynebacterium glutamicum; Corynebacterium glutamicum ATCC 13032; Gluconobacter oxydans; Pseudomonas putida KT2440; Bacillus subtilis subsp. subtilis str. 168
Type:
Expression profiling by array
Platform:
GPL26911
3 Samples
Download data: GPR
Series
Accession:
GSE151224
ID:
200151224
15.

Translational activation by an alternative sigma factor in Bacillus subtilis

(Submitter supplied) Sigma factors are an important class of bacterial transcription factors that lend specificity to RNA polymerases by binding to distinct promoter elements for genes in their regulons. Here we show that activation of the general stress sigma factor, B, in Bacillus subtilis paradoxically leads to dramatic induction of translation for a subset of its regulon genes. These genes are translationally repressed when transcribed by the housekeeping sigma factor, A, owing to extended RNA secondary structures as determined in vivo using DMS-MaPseq. more...
Organism:
Bacillus subtilis subsp. subtilis str. 168
Type:
Other
Platform:
GPL23473
4 Samples
Download data: TXT
Series
Accession:
GSE168393
ID:
200168393
16.

Adaptation of Bacillus subtilis tat and S313 mutant cells to growth in Lysogeny Broth (LB) lacking NaCl

(Submitter supplied) In B. subtilis, the Tat secretion system is essential for effective growth in media lacking iron or NaCl, which is related to the Tat-dependent export of the heme peroxidase EfeB. In Lysogeny Broth (LB) without NaCl, tat mutant bacteria undergo cell lysis in the early exponential growth phase. Part of the population of mutant bacteria then adapts to the salt-deprived condition and resumes growth. The absence of sRNA S313, which has a predicted role in modulating the expression of the efeUOB operon, also leads to a lysis-recovery phenotype. more...
Organism:
Bacillus subtilis subsp. subtilis str. 168
Type:
Expression profiling by array
Platform:
GPL21669
15 Samples
Download data: TXT
Series
Accession:
GSE149595
ID:
200149595
17.

A global transcription study of the regulatory effects of potassium, glutamate and c-di-AMP in Bacillus subtilis

(Submitter supplied) Since c-di-AMP has been implicated in the interplay of potassium and glutamate homeostasis, we analysed, using strand-specific tiling arrays (tiling step of 22 nucleotides), global gene expression in the wild type strain B. subtilis 168 at low (0.1 mM) and high (5 mM) potassium concentrations and in the presence of ammonium and glutamate as the nitrogen source as well as in the c-di-AMP free strain (∆disA, ∆cdaA, ∆cdaS) GP2222 and its isogenic suppressor mutant GP2223 that is able to grow at 5 mM potassium. more...
Organism:
Bacillus subtilis subsp. subtilis str. 168
Type:
Expression profiling by array
Platform:
GPL21981
12 Samples
Download data: TXT
Series
Accession:
GSE156738
ID:
200156738
18.

Structural Basis for Bacterial Ribosome-Associated Quality Control by RqcH and RqcP

(Submitter supplied) In all branches of life, stalled translation intermediates are recognized and processed by ribosome-associated quality control (RQC) pathways. RQC begins with the splitting of stalled ribosomes, leaving an unfinished polypeptide still attached to the large subunit. Ancient and conserved NEMF family RQC proteins target these incomplete proteins for degradation by the addition of C-terminal "tails." How such tailing can occur without the regular suite of translational components is, however, unclear. more...
Organism:
Bacillus subtilis; Bacillus subtilis subsp. subtilis str. 168
Type:
Non-coding RNA profiling by array
Platform:
GPL28697
3 Samples
Download data: TXT
Series
Accession:
GSE152592
ID:
200152592
19.

Transcriptome analysis of G. oxydans 621H in response to L-arabinose

(Submitter supplied) DNA microarray analysis was performed to check whether the addition and/or oxidation of L-arabinose to the growth medium of G.oxydans 621H possibly affects short-term global gene expression.
Organism:
Escherichia coli; Corynebacterium glutamicum; Bacillus subtilis subsp. subtilis str. 168; Gluconobacter oxydans 621H; Gluconobacter oxydans; Pseudomonas putida KT2440
Type:
Expression profiling by array
Platform:
GPL28615
1 Sample
Download data: GPR
Series
Accession:
GSE151596
ID:
200151596
20.

Repurposing bioactive aporphine alkaloids as efflux pump inhibitors

(Submitter supplied) In the current study, RNA sequencing was used to investigate the synergistic effects of the berberine and roemerine on Bacillus subtilis cells.
Organism:
Bacillus subtilis subsp. subtilis str. 168
Type:
Expression profiling by high throughput sequencing
Platform:
GPL24119
2 Samples
Download data: TXT
Series
Accession:
GSE106296
ID:
200106296
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