Bacillus subtilis subsp. subtilis str. 168
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ABSTRACT:
OTHER RELATED OMICS DATASETS IN: PRD000439
PROVIDER: PRJNA138515 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Protein S-thiolation is a post-translational thiol-modification that controls redox-sensing transcription factors and protects active site cysteine residues against irreversible oxidation. In B. subtilis, the MarR-type repressor OhrR was shown to sense organic hydroperoxides via formation of mixed disulfides with the redox buffer bacillithiol (Cys-GlcN-Malate) termed as S-bacillithiolation. We have studied changes in the transcriptome and redox proteome caused by the strong oxidant hypochloric acid (NaOCl), the active component of house-hold bleach. The OhrR-controlled peroxiredoxin OhrA was most strongly up-regulated by NaOCl stress and conferred specific protection against NaOCl. Inactivation of the OhrR repressor was caused by S-bacillithiolation of the redox-sensing Cys15 residue in response to NaOCl. Two cobalamin-independent methionine synthases MetE and YxjG were identified as S-bacillithiolated at their essential active site cysteines resulting in hypochlorite-induced methionine limitation. In summary, our studies show that S-bacillithiolation of OhrR and the methionine synthases is the major mechanism in protection against hypochlorite stress in B. subtilis. The B. subtilis 168 wild type strain was grown in minimal medium to OD500 of 0.4 and harvested before and 10 minutes after exposure to 50 µM NaOCl. Microarray hybridizations were performed in triplicate using RNA isolated from independent cultures.
2011-07-04 | E-GEOD-27637 | biostudies-arrayexpress
Project description:Protein S-thiolation is a post-translational thiol-modification that controls redox-sensing transcription factors and protects active site cysteine residues against irreversible oxidation. In Bacillus subtilis the MarR-type repressor OhrR was shown to sense organic hydroperoxides via formation of mixed disulfides with the redox buffer bacillithiol (Cys-GlcN-Malate, BSH), termed as S-bacillithiolation. Here, we have studied changes in the transcriptome and redox proteome caused by the strong oxidant hypochloric acid in B. subtilis. The expression profile of NaOCl stress is indiciative of disulfide stess as shown by the induction of the thiol- and oxidative stress-specific Spx, CtsR and PerR regulons. Thiol redox proteomics identified only few cytoplasmic proteins with reversible thiol-oxidations in response to NaOCl stress that include GapA and MetE. Shotgun-LC-MS/MS analyses revealed that GapA, Spx and PerR are oxidized to intramolecular disulfides by NaOCl stress. Furthermore, we identified six S-bacillithiolated proteins in NaOCl-treated cells, including the OhrR repressor, two methionine synthases MetE and YxjG, the inorganic pyrophosphatase PpaC, the 3-D-phophoglycerate dehydrogenase SerA and the putative bacilliredoxin YphP. S-bacillithiolation of the OhrR repressor leads to up-regulation of the OhrA peroxiredoxin that confers together with BSH specific protection against NaOCl. S-bacillithiolation of MetE, YxjG, PpaC and SerA causes hypochlorite-induced methionine starvation as supported by the induction of the S-box regulon. The mechanism of S-glutathionylation of MetE has been described in Escherichia coli also leading to enzyme inactivation and methionine auxotrophy. In summary, our studies discover an important role of the BSH redox buffer in protection against hypochloric acid by S-bacillithiolation of the redox-sensing regulator OhrR and of four enzymes of the methionine biosynthesis pathway.
2011-07-04 | GSE27637 | GEO
Project description:Transcriptional response of Bacillus subtilis to moenomycin in wild-type 168.
2011-06-17 | GSE30001 | GEO
Project description:Identification of the specific WalR (YycF) binding regions on the B. subtilis chromosome during exponential and phosphate starvation growth phases. The data serves to extend the WalRK regulon in Bacillus subtilis and its role in cell wall metabolism, as well as implying a role in several other cellular processes.
2015-01-26 | GSE65272 | GEO
Project description:The gene expression of Bacillus subtilis 168 showed 3 major patterns including early expression, transition expression and late expression We monitored Bacillus subtilis gene expression by using microarray at differernt time points
2013-04-10 | GSE45933 | GEO
Project description:Transcriptional response of Bacillus subtilis to moenomycin in wild-type 168. Bacillus subtilis 168, WT (-MOE) vs. WT (+MOE). The experiment was conducted in triplicate using three independent total RNA preparations. Untreated samples were labeled with Alexa Fluor 555 and moenomycin treated samples were labeled with Alexa Fluor 647.
2011-06-17 | E-GEOD-30001 | biostudies-arrayexpress
Project description:The gene expression of Bacillus subtilis 168 showed 3 major patterns including early expression, transition expression and late expression We monitored Bacillus subtilis gene expression by using microarray at differernt time points Bacillus subtilis 168 was choosed as model for gram-positive to study gene expression at different stages
2013-04-10 | E-GEOD-45933 | biostudies-arrayexpress
Project description:Recent studies revealed the unsuspected complexity of the bacterial transcriptome but its systematic analysis across many diverse conditions remains a challenge. Here we report the condition-dependent transcriptome of the prototype strain B. subtilis 168 across 104 conditions reflecting the bacterium's life-styles. This data set composed of 269 tiling array hybridizations allowed to observe ~85% of the annotated CDSs expressed in the higher 30% in at least one hybridization and thus provide an excellent coverage of the transcriptome of this bacterium. In addition to the Genbank annotation 1583 new segments of the chromosome were identified as transcribed and have transcription levels reported in the data matrix. RNA samples prepared from B. subtilis 168 grown under 104 experimental conditions were reverse transcribed, labeled and hybridized to tiling arrays. Most hybridizations were performed in duplicate or triplicate using RNA isolated from independent cultures. All experiments were performed with strain BSB1 which is a tryptophan-prototrophic (trp+) derivative of the 168 trpC2 strain.
2012-03-07 | E-GEOD-27219 | biostudies-arrayexpress
Project description:Characterization of the putative genetic determinants of the VBNC state in a known spore-forming Gram-positive organism Bacillus subtilis 168. The VBNC state was induced under osmotic stress and aminoglycoside treatment. The transcriptome landscape of VBNC cells was compared to the viable, antibiotic sensitive B. subtilis cells and to the viable cells with no antibiotic treatment.
2022-07-02 | GSE207180 | GEO
Project description:Recent studies revealed the unsuspected complexity of the bacterial transcriptome but its systematic analysis across many diverse conditions remains a challenge. Here we report the condition-dependent transcriptome of the prototype strain B. subtilis 168 across 104 conditions reflecting the bacterium's life-styles. This data set composed of 269 tiling array hybridizations allowed to observe ~85% of the annotated CDSs expressed in the higher 30% in at least one hybridization and thus provide an excellent coverage of the transcriptome of this bacterium. In addition to the Genbank annotation 1583 new segments of the chromosome were identified as transcribed and have transcription levels reported in the data matrix.
2012-03-07 | GSE27219 | GEO