GEO DataSets

(Submitter supplied) Comparison of gene expression of WT Synechocystis cells with cells overexpressing the sRNA PsrR1 in order to detect direct targets of the sRNA PsrR1.

Organism:

Synechocystis sp. PCC 6803

Type:

Expression profiling by array

Platform:

GPL15867

10 Samples

Download data: TXT

(Submitter supplied) Small proteins are an underinvestigated class of gene products in all domains of life. Here we describe the role of NsiR6/NblD, a cysteine-rich 66 amino acid small protein in the acclimation response of cyanobacteria to nitrogen starvation. Phycobilisomes, the macromolecular pigment-protein complexes for photosynthetic light harvesting, are rapidly degraded upon shift to low nitrogen. Deletion of nblD in Synechocystis sp. more...

Organism:

Synechocystis sp. PCC 6803

Type:

Expression profiling by array

Platform:

GPL23938

8 Samples

Download data: TXT

(Submitter supplied) Functional analysis of engineered carbon limitation in the ∆ndhD3/ndhD4/cmpA/sbtA (= ∆4) Synechocystis mutant reveals a global phenocopy of wild type acclimation to low CO2 and multi-layered Ci-regulation.

Organism:

Synechocystis sp. PCC 6803

Type:

Expression profiling by array

Platform:

GPL15867

12 Samples

Download data: TXT

(Submitter supplied) Iron is an essential cofactor in many metabolic reactions. Mechanisms controlling iron homeostasis need to respond to changes in extracellular conditions, but must also keep the concentration of intracellular iron under strict control, as free ferrous iron (Fe2+) can lead to the generation of reactive oxygen species. Due to its role as redox carrier in photosynthesis, the iron quota in cyanobacteria is about 10 times higher than in model enterobacteria, but the molecular details how such high quota is tightly regulated have remained obscure. more...

Organism:

Synechocystis sp. PCC 6803

Type:

Expression profiling by array

Platform:

GPL15867

12 Samples

Download data: TXT

(Submitter supplied) We compared transcriptomic changes, 5'-triphosphorylated (TSS) and 5'-monophosphorylated (PSS) RNA ends of a thermo-sensitive and a wild-typic RNase E mutant strain of the cyanobacterium Synechocystis sp. PCC6803 (rne(Ts) and rne(WT)) before and after a heat shock. Analysis of changing 5'-monophosphorylated ends revealed RNase E depedent processing sites on a transcriptome-wide level.

Organism:

Synechocystis sp. PCC 6803

Type:

Expression profiling by high throughput sequencing

Platform:

GPL22923

12 Samples

Download data: CSV, GFF

(Submitter supplied) The acquisition and assimilation of inorganic carbon (Ci) represents the largest flux of inorganic matter in photosynthetic organisms, and, hence it is tightly controlled. We studied the Ci-dependent transcriptional and metabolic regulation in the Synechocystis sp. PCC 6803 wild type compared to a DndhR mutant that is defective in the main transcriptional repressor for Ci acquisition genes, NdhR (CcmR). more...

Organism:

Synechocystis sp. PCC 6803

Type:

Expression profiling by array

Platform:

GPL15867

13 Samples

Download data: TXT

(Submitter supplied) The gene ssr3341 was previously suggested to encode an orthologue of the RNA chaperone Hfq in Synechocystis sp. strain PCC 6803. When a phototactic strain of this cyanobacterium was insertionally inactivated at ssr3341, the mutants were not transformable, and were rendered non-phototactic compared to the wild type. The loss of motility was complemented by re-introduction of the wild-type gene, correlated with the re-establishment of type IV pili on the cell surface. more...

Organism:

Synechocystis sp. PCC 6803

Type:

Expression profiling by array

Platform:

GPL6546

8 Samples

Download data: TXT

(Submitter supplied) The NDH1 complex fulfils numerous tasks in the cyanobacterial cell such as respiration, cyclic electron flow, and inorganic carbon concentration. Despite the immense progress in our understanding of structure/function relation of the cyanobacterial NDH1 complex, the subunits catalysing the NAD(P)H docking and oxidation are still missing. The gene sml0013 of Synechocystis 6803 encodes for a small protein of unknown function for that homologs exist in all completely known cyanobacterial genomes. more...

Organism:

Synechocystis sp. PCC 6803

Type:

Expression profiling by array

Platform:

GPL15867

8 Samples

Download data: TXT

(Submitter supplied) The unicellular cyanobacterium Synechocystis sp. PCC 6803 is a model system for studying biochemistry, genetics and molecular biology of photobiological processes. Despite its importance in basic and applied research, the genome-wide picture of transcriptional regulation in this bacterium is limited. Characteristic transcriptional responses to changes in the growth environment are expected to provide a scaffold for describing the Synechocystis transcriptional regulatory network as well as efficient means for functional annotation of genes in the genome. more...

Organism:

Synechocystis sp. PCC 6803

Type:

Expression profiling by array

Dataset:

GDS3745

Platform:

GPL7016

27 Samples

Download data: GPR

Analysis of cyanobacterium cultures grown under sulfur starvation conditions for up to 72 hrs. During S limitation, production of hydrogen, a clean and sustainable energy carrier, increases substantially. Results provide insight into gene expression changes during the transition to S starvation.

Organism:

Synechocystis sp. PCC 6803

Type:

Expression profiling by array, log2 ratio, 3 stress, 11 time sets

Platform:

GPL7016

Series:

GSE11970

27 Samples

Download data: GPR

(Submitter supplied) In order to identify possible RNAs regulated by small RNA NsiR3 we have analyzed the responses to nitrogen removal in a mutant lacking nsiR3 (ΔnsiR3). RNA samples were isolated from cells growing in the presence of combined nitrogen (ammonium) or after 8 h of nitrogen deprivation.

Organism:

Nostoc sp. PCC 7120 = FACHB-418

Type:

Expression profiling by array

Platform:

GPL25601

4 Samples

Download data: TXT

(Submitter supplied) The model cyanobacterium Synechocystis sp. PCC 6803 was used for a systematic survey of differential expression with a focus on antisense (as)RNAs and non-coding (nc)RNAs. A microarray was constucted with on average 5 probes for each transcript known thus far, including ncRNAs and asRNAs. The resulting 20,431 individual probes are duplicated on the array (Agilent 4x44k custom array) representing a technical replicate. more...

Organism:

Synechocystis sp. PCC 6803

Type:

Expression profiling by array; Non-coding RNA profiling by array

Dataset:

GDS3744

Platform:

GPL8567

12 Samples

Download data: TXT

(Submitter supplied) The model cyanobacterium Synechocystis sp. PCC 6803 was used for a systematic survey on the number and types of antisense (as)RNAs. A tiled microarray was constructed with probes for both strands of the genes or intergenic spacers with candidate transcripts predicted by an algorithm and an equally sized and distributed control set. The resulting 102,739 individual probes cover an accumulated length of 1,441,146 nt or about 40% of the total chromosome sequence of Synechocystis 6803. more...

Organism:

Synechocystis sp. PCC 6803

Type:

Expression profiling by genome tiling array; Non-coding RNA profiling by genome tiling array

Platform:

GPL8071

4 Samples

Download data: TXT

Analysis of cyanobacterium cultures subjected to various stressful growth conditions: CO2 depletion, dark, and high light. Results provide insight into molecular mechanisms, including antisense (as)RNAs and non-coding (nc)RNAs, underlying cyanobacteria adaptation to various stresses.

Organism:

Synechocystis sp. PCC 6803

Type:

Expression profiling by array, count, 4 stress sets

Platform:

GPL8567

Series:

GSE16162

12 Samples

Download data: TXT

(Submitter supplied) RNA samples from cells collected at twenty four time points in 48-hours diurnal cycles were analyzed, and they compared between each other for transcriptional profiles of global genes

Organism:

Synechocystis sp. PCC 6803

Type:

Expression profiling by array

Platform:

GPL21668

24 Samples

Download data: TXT

(Submitter supplied) Carbohydrate metabolism is a tightly regulated process in photosynthetic organisms. The ability to utilize glucose for growth and to regulate storage carbohydrate (i.e. glycogen) metabolisms requires a number of regulatory elements. In the cyanobacterium Synechocystis sp. PCC 6803, the photomixotrophic growth protein A (PmgA), a putative serine/threonine kinase, is involved in governing these abilities; however its downstream regulatory elements are not well studied. more...

Organism:

Synechocystis sp. PCC 6803

Type:

Expression profiling by array

Platform:

GPL15867

5 Samples

Download data: TXT

(Submitter supplied) DEAD-box RNA-helicases catalyze the correct folding of structured RNAs and the formation of RNP complexes. The cyanobacterium Synechocystis sp. PCC 6803 encodes a single DEAD-box RNA helicase, CrhR (Slr0083) whose inactivation has severe effects on cellular physiology and morphology, particularly under cold stress. In order to identify potential RNA targets of CrhR, custom microarrays containing sequences corresponding to non-coding small RNAs (UTRs, ncRNAs, asRNAs, iRNAs) and all mRNAs were constructed. more...

Organism:

Synechocystis sp. PCC 6803

Type:

Expression profiling by array

Platform:

GPL18796

12 Samples

Download data: TXT