Escherichia coli
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA92623 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:We determined the global gene expression profiles of wildtype, dam, dam mutS, and mutS mutant E. coli strains. Keywords: Basal gene expression comparison
2005-07-14 | GSE2928 | GEO
Project description:We used Affymetrix microarrays to determine the cisplatin-induced gene expression changes in E. coli deficient in dam and mismatch repair (dam, dam mutS, and mutS mutant strains). E. coli deficient in dam are hypersensitive to cisplatin. However introducing an additional mutation in mismatch repair (i.e., a mutation in mutS or mutL) abrogates this sensitivity and essentially restores wildtype levels of resistance. Keywords: Drug-induced expression
2005-07-27 | GSE2999 | GEO
Project description:We used Affymetrix microarrays to determine the cisplatin-induced gene expression changes in E. coli deficient in dam and mismatch repair (dam, dam mutS, and mutS mutant strains). E. coli deficient in dam are hypersensitive to cisplatin. However introducing an additional mutation in mismatch repair (i.e., a mutation in mutS or mutL) abrogates this sensitivity and essentially restores wildtype levels of resistance. Experiment Overall Design: Overnight cultures were diluted 1000-fold and grown in Luria-Bertani (LB) medium until the cells reached exponential growth as determined by OD600. The exponentially growing cells were resuspended in M9 minimal medium at a cell density of 2 X 108 cells/ml in a volume of 15 ml and treated with 150 uM cisplatin for 2 hours at 37°C. Following treatment cultures were resuspended in 15 ml LB and allowed to recover for 90 minutes at 37°C. OD600 readings were taken after the recovery period, when RNA isolation began. Total RNA was isolated from cells by extraction using the MasterPure RNA Purification Kit (Epicentre Technologies) according to the manufactureâs protocol. The isolated total RNA was quantitated by absorption at 260 nm (typical yield from a 15 ml culture was 250-500 µg of total RNA), and the purity was determined by the ratio of absorption values at 260/280nm. RNA quality was determined by formaldehyde agarose gel electrophoresis (1.2% agarose in FA Buffer pH 7.0 (20mM 3-[N-morpholino]propanesulfonic acid, 5mM sodium acetate, 1mM ethylenadiaminetetraacetic acide (EDTA)) or by analysis on an Agilent 2100 Bioanalyzer. All samples visualized by gel electrophoresis or by the bioanalyzer electropherogram showed clear distinct bands correlating to 16S and 23S ribosomal RNA, indicating that no detectable RNA degradation occurred and that RNA integrity was maintained throughout the RNA isolation procedure.
2007-07-19 | E-GEOD-2999 | biostudies-arrayexpress
Project description:We determined the global gene expression profiles of wildtype, dam, dam mutS, and mutS mutant E. coli strains. Experiment Overall Design: Overnight cultures were diluted 1000-fold with fresh LB medium and cultured further. Log phase cultures were diluted to a cell density of 2 X 108 cells/ml in M9 salts and incubated at 37°C for two hours, after which they were resuspended in LB broth for 90 minutes. This treatment served as a mock treatment for cultures incubated with a chemical (cisplatin) in a parallel study (Robbins et al., unpublished results). Total RNA was isolated from cells by extraction using the MasterPure RNA Purification Kit (Epicentre Technologies) followed by DNAse digestion according to the manufacturerâs protocol. The isolated total RNA was quantitated by absorption at 260 nm (typical yield from a 15 ml culture was 250-500 µg of total RNA), and the purity was determined by the ratio of absorption values at 260/280nm. RNA quality was determined by formaldehyde agarose gel electrophoresis (1.2% agarose in FA Buffer pH 7.0 (20 mM 3-[N-morpholino]propanesulfonic acid, 5 mM sodium acetate, 1 mM ethylenadiaminetetraacetic acide (EDTA))) or by analysis on an Agilent 2100 Bioanalyzer. All samples visualized by gel electrophoresis or by the bioanalyzer electropherogram showed clear distinct bands correlating to 16S and 23S ribosomal RNA, indicating that no detectable RNA degradation occurred and that RNA integrity was maintained throughout the RNA isolation procedure. mRNA was enriched from total RNA as described in the Affymetrix GeneChip Expression Analysis Technical Manual for GeneChip E. coli Sense Genome Arrays.
2007-07-20 | E-GEOD-2928 | biostudies-arrayexpress
Project description:Escherichia coli mutant strains were prepared for metabolomics analysis.
2019-07-09 | ST001321 | MetabolomicsWorkbench
Project description:Expression profiles of wild-type and SgrR mutant E. coli strains under aMG and 2-DG-induced stress. Expression profiles of E. coli overexpressing SgrS sRNA.
2013-03-26 | GSE45443 | GEO
Project description:The goal of this study is to compare gene expression data for a well known model organism (Escherichia coli) using different technologies (NGS here, microarray from GSE48776). mRNA profiles of Wild Type and two Mutant Strains (ydcR (b1439) MUTANT and yjiR (b4340) MUTANT), growth in minimal medium, were generated by deep sequencing, in triplicate, using Illumina MiSeq.
2013-07-12 | E-GEOD-48829 | biostudies-arrayexpress
Project description:Sulfonamide resistance genes are associated with fitness costs in E. coli in vivo. We isolated three compensatory mutant strains carrying sul2 gene in vivo. Compensatory mechanism of sul2 gene in E. coli was explored by TMT-PRM technology.
2023-05-06 | PXD042036 | iProX
Project description:These E. coli strains were grown with various signaling molecules and the expression profiles were determined. Keywords: addition of quorum and host hormone signals
2007-09-20 | GSE7439 | GEO
Project description:Investigation of whole genome gene expression level changes in a Escherichia coli MG1655 K-12 ?fnr mutant, compared to the wild-type strain. The mutations engineered into this strain produce a strain lacking the FNR protein. WT strains were grown under aerobic and anaerobic growth conditions.
2013-06-20 | GSE41189 | GEO