GEO DataSets

(Submitter supplied) Heterocysts, cells specialized for nitrogen fixation in certain filamentous cyanobacteria, appear singly in a nonrandom spacing pattern along the chain of vegetative cells. A two-stage, biased initiation and competitive resolution model has been proposed to explain the establishment of this spacing pattern. There is substantial evidence that competitive resolution of a subset of cells initiating differentiation occurs by interactions between a self enhancing activator, HetR, and a diffusible inhibitor PatS-5 (RGSGR). more...

Organism:

Nostoc punctiforme PCC 73102

Type:

Expression profiling by array

Platform:

GPL15966

48 Samples

Download data: XYS

(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) In order to analyze the responses of a heterocystous cyanobacterium to combined-nitrogen depletion/addition, we have used customized microarrays to identify genes potentially involved in heterocysts differentiation by comparing the responses in the control strain and a hetR mutant unable to differentiate heterocysts. RNA samples were isolated from cells growing in the presence of combined nitrogen (ammonium) or after 6, 8, 12 or 24 h of nitrogen deprivation. more...

Organism:

Nostoc sp. PCC 7120 = FACHB-418

Type:

Expression profiling by array

Platform:

GPL25601

20 Samples

Download data: TXT

(Submitter supplied) Here, we report the transcriptome of Anabaena sp. strain 7120, a cyanobacterium that forms specialized nitrogen-fixing cells called heterocysts. Our data suggests that cyanobacteria frequently have more complex transcripts than thought, with large 5' UTRs, numerous antisense transcripts, and multiple transcriptional start sites or processing sites.

Organism:

Nostoc sp. PCC 7120 = FACHB-418

Type:

Expression profiling by high throughput sequencing

Platform:

GPL11645

4 Samples

Download data: BAM