GEO DataSets

Analysis of the facultative photosynthetic anaerobe Rhodobacter sphaeroides at various time points during the transition from anaerobic-light to aerobic-dark growth conditions. Results provide insight into molecular mechanisms underlying the transition from one homeostatic state to another.

Organism:

Rhodobacter sphaeroides 2.4.1

Type:

Expression profiling by array, count, 2 growth protocol, 6 time sets

Platform:

GPL162

Series:

GSE12269

24 Samples

Download data: CEL

(Submitter supplied) we performed time series microarray analyses to investigate transcriptome dynamics during the transition from anaerobic photosynthesis to aerobic respiration. Published on J. Bacteriol., 190 (1), 286-299, 2008. Major changes in gene expression profiles occurred in the initial 15 min after the shift from anaerobic-light to aerobic-dark conditions, with changes continuing to occur up to 4 hours postshift. more...

Organism:

Cereibacter sphaeroides 2.4.1

Type:

Expression profiling by array

Dataset:

GDS3296

Platform:

GPL162

24 Samples

Download data: CEL

(Submitter supplied) Transcriptome profiling of Rhodobacter sphaeroides cells (WT and delta-oxyR mutant) grown in semiaerobic conditions, 7 and 30 min after addition of H2O2 up to 1 mM Keywords: time series

Organism:

Cereibacter sphaeroides 2.4.1; Cereibacter sphaeroides

Type:

Expression profiling by array

Dataset:

GDS1908

Platform:

GPL162

15 Samples

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Expression profiling of oxyR deletion mutant and wild type cells following treatment with 1 mM hydrogen peroxide. OxyR is a transcription factor that senses oxidative stress. Results provide insight into the mechanisms involved in oxidative stress tolerance.

Organism:

Rhodobacter sphaeroides; Rhodobacter sphaeroides 2.4.1

Type:

Expression profiling by array, count, 2 genotype/variation, 3 time sets

Platform:

GPL162

Series:

GSE2829

15 Samples

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(Submitter supplied) Transcriptional profiling of R. sphaeroides pRKPcrZ compared to control R. sphaeroides pRK4352 under low oxygen conditions. In this study we compared the transcriptome of a PcrZ over-expression strain to a control strain. PcrZ is the first small non-coding RNA, which is involved in the complex regulatory network of photosynthesis gene regulation in Rhodobacter sphaeroides. It counteracts the formation of photosynthetic complexes in a redox dependent manner.

Organism:

Cereibacter sphaeroides; Cereibacter sphaeroides 2.4.1

Type:

Expression profiling by array

Platform:

GPL15457

2 Samples

Download data: TXT

(Submitter supplied) mRNA levels were measured in Rhodobacter sphaeroides 2.4.1 at 20% O2 and 0.5% O2, Rhodobacter sphaeroides 2.4.1 App11 (AppA-null), Rhodobacter sphaeroides 2.4.1 (pPNs) and PpsR mutant PPS2-4. The mRNA samples were prepared from cultures supplied with 20% O2, 1% CO2, and 79% N2, and grown in the dark to an OD of 0.18. The mRNA levels for each strain was measured three times. Keywords: repeat sample

Organism:

Cereibacter sphaeroides; Cereibacter sphaeroides 2.4.1

Type:

Expression profiling by array

Dataset:

GDS1709

Platform:

GPL162

15 Samples

Download data: CEL

Analysis of PpsR overexpressing and mutant strains grown at normal 20% oxygen. Expression examined in wild type cells at 0.5% oxygen. PpsR represses the transcription of a subset of biosynthetic genes in photosystem (PS) formation. Results suggest that PpsR is a master regulator of PS development.

Organism:

Rhodobacter sphaeroides; Rhodobacter sphaeroides 2.4.1

Type:

Expression profiling by array, count, 4 genotype/variation, 2 growth protocol, 3 other sets

Platform:

GPL162

Series:

GSE1515

15 Samples

Download data: CEL

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Cereibacter sphaeroides 2.4.1

Type:

Expression profiling by array

Platforms:

GPL14782 GPL14796

7 Samples

Download data: GPR, TXT

(Submitter supplied) Transcriptional profiling of R. sphaeroides delta-cryB compared to control R. sphaeroides 2.4.1 under blue light, semiaerobic conditions.

Organism:

Cereibacter sphaeroides 2.4.1

Type:

Expression profiling by array

Platform:

GPL14796

2 Samples

Download data: TXT

(Submitter supplied) Transcriptional profiling of R. sphaeroides delta-CryB comparing to control R. sphaeroides 2.4.1 under microaerobic conditions

Organism:

Cereibacter sphaeroides 2.4.1

Type:

Expression profiling by array

Platform:

GPL14782

3 Samples

Download data: GPR

(Submitter supplied) Transcriptional profiling of R. sphaeroides delta-cryB compared to control R. sphaeroides 2.4.1 under photo-oxidative stress, aerobic conditions.

Organism:

Cereibacter sphaeroides 2.4.1

Type:

Expression profiling by array

Platform:

GPL14796

2 Samples

Download data: TXT

(Submitter supplied) aerobic, semiaerobic (3% O2),photosynthetic and DMSO growth conditions, 2.4.1 strain. Growth and RNA isolation were done independently in 2 laboratories (Laramie and Houston). Genechip sample preparation - in Laramie. Keywords: ordered

Organism:

Cereibacter sphaeroides; Cereibacter sphaeroides 2.4.1

Type:

Expression profiling by array

Dataset:

GDS290

Platform:

GPL162

27 Samples

Download data: CEL

Expression profiles of wild-type anoxygenic phototrophic proteobacterium grown under 0%, 3% and 30% oxygen tensions, and relationship to production of the photosystem.

Organism:

Rhodobacter sphaeroides; Rhodobacter sphaeroides 2.4.1

Type:

Expression profiling by array, count, 3 dose sets

Platform:

GPL162

Series:

GSE532

6 Samples

Download data: CEL

(Submitter supplied) In previous studies we identified the small RNA-binding protein CcaF1 that is involved in sRNA maturation and RNA turnover in Rhodobacter sphaeroides under microaerobic growth conditions (Grützner et al., 2021, Nucleic Acids Res. 49(6), doi: 10.1093/nar/gkab146). In this study we analysed the the small RNA-binding protein CcaF1 under phototrophic growth condtions to identify new RNA binding partners.

Organism:

Cereibacter sphaeroides

Type:

Other

Platform:

GPL33350

4 Samples

Download data: WIG

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Cereibacter sphaeroides 2.4.1

Type:

Expression profiling by array

Platform:

GPL14796

4 Samples

Download data: TXT

(Submitter supplied) Transcriptional profiling of R. sphaeroides Δirr compared to control R. sphaeroides 2.4.1 under microaerobic conditions.

Organism:

Cereibacter sphaeroides 2.4.1

Type:

Expression profiling by array

Platform:

GPL14796

2 Samples

Download data: TXT

(Submitter supplied) Transcriptional profiling of R. sphaeroides Δirr under iron limitation (-Fe) compared to control R. sphaeroides Δirr under normal growth conditions (+Fe).

Organism:

Cereibacter sphaeroides 2.4.1

Type:

Expression profiling by array

Platform:

GPL14796

2 Samples

Download data: TXT

(Submitter supplied) Zymomonas mobilis ZM4 produces near theoretical yields of ethanol with high specific productivity and recombinant strains are able to ferment both C-5 and C-6 sugars. However, the genetic and physiological basis of the ZM4 response to various industrially-relevant stresses is poorly understood. In this study, the dynamics of ZM4 oxygen stress responses were elucidated by characterizing the transcriptomic and metabolomic profiles of aerobic and anaerobic fermentations using whole-genome microarray analysis and gas chromatography-mass spectrometry. more...

Organism:

Zymomonas mobilis

Type:

Expression profiling by array

Platform:

GPL6431

24 Samples

Download data: TXT

(Submitter supplied) The expression of genes involved in photosystem development in Rhodobacter sphaeroides is dependent upon three major regulatory networks: FnrL, the PrrBA two-component system and the AppA-PpsR pathway. A PrrA- mutant strain of R. sphaeroides is unable to develop under photosynthetic conditions, but when combined with a ppsR mutation, is able to resume growth. In an effort to better characterize the ppsR regulon and to unravel the relationship between the PrrBA and the AppA-PpsR networks, we compared transcriptome profiles from the wild type, PrrA- and PrrA-PpsR- strains under a permissive, common, growth condition: anaerobic-dark-DMSO. more...

Organism:

Cereibacter sphaeroides 2.4.1

Type:

Expression profiling by array

Platform:

GPL162

3 Samples

Download data: CEL

(Submitter supplied) DNA microarray analysis was employed to investigate the transcriptome response to nitrosative stress in a non-denitrifying facultative photosynthetic bacterium Rhodobacter sphaeroides 2.4.1. We focused on the role played by a nitric oxide-response transcriptional regulator NnrR in the response. The transcriptome profiles of R. sphaeroides 2.4.1 and its nnrR mutant before and after exposure to nitrosating agents S-nitrosoglutathione (GSNO) or sodium nitroprusside (SNP) under semiaerobic conditions were analyzed.

Organism:

Cereibacter sphaeroides 2.4.1

Type:

Expression profiling by array

Platform:

GPL162

12 Samples

Download data: CEL