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Links from GEO DataSets

Items: 9

1.

Expression profiling of P. stutzeri A1501 treated with 20mM ammonia shock for 10 min

(Submitter supplied) A whole genome DNA microarray was used to undertake a global transcriptional analysis of nitrogen fixation and ammonium repression in Pseudomonas stutzeri A1501. The aim of this study was to identify the genes that are up-regulated under nitrogen fixation conditions and rapidly down-regulated as soon as 10 min after ammonia shock. The expression changed genes may be the candidate genes for the ammonia signal transmission or be involved in the nitrogen regulatory mechanism.
Organism:
Stutzerimonas stutzeri A1501
Type:
Expression profiling by array
Platform:
GPL4677
6 Samples
Download data: GPR
Series
Accession:
GSE14775
ID:
200014775
2.

Microarray was used to study the gene expression of P. stutzeri A1501 under different growth conditions

(Submitter supplied) Nitrogen fixation is a highly energy-demanding process and highly regulated at multiple levels. The two major signals that regulate nitrogen fixation in most diazotrophs are oxygen and ammonia. In order to study the complex regulated mechanism and to highlight the complete nitrogen fixing system in genome level, here we present the transcriptional profiles of the nitrogen fixation genes of P.stutzeri A1501 in different growth conditions with a genome-wide DNA microarray. more...
Organism:
Stutzerimonas stutzeri A1501
Type:
Expression profiling by array
Platform:
GPL4677
6 Samples
Download data: GPR
Series
Accession:
GSE6572
ID:
200006572
3.

Transcriptional Analysis of an Ammonium-Excreting Strain of Azotobacter vinelandii Deregulated for Nitrogen Fixation

(Submitter supplied) The transcriptional differences found during stationary-phase ammonium accumulation show a strong contrast between the deregulated (nifL disrupted) and wild-type strain, and to what was reported for the wild-type strain under exponential growth related to key processes involved in driving the process of nitrogen fixation in A. vinelandii. These results further illuminate a number of additional genes associated with siderophore synthesis, molybdate transfer and electron transfer that are likely associated with biological nitrogen fixation.
Organism:
Azotobacter vinelandii
Type:
Expression profiling by high throughput sequencing
Platform:
GPL23257
15 Samples
Download data: TXT
Series
Accession:
GSE97402
ID:
200097402
4.

Transcriptional profile of Escherichia coli K12 strain DH10B harboring A1501 nitrogen fixation island (NFI) under nitrogen fixation conditions

(Submitter supplied) A1501 NFI is a genomic island derived from Pseudomonas stutzeri A1501. To study the molecular interactions of the P. stutzeri nif genes with the E. coli genome during nitrogen fixation, the NIF of A1501 was transferred into E. coli and comparative transcriptomics analyses were performed between nitrogen fixation conditions and nitrogen excess conditions.
Organism:
Escherichia coli; Escherichia coli str. K-12 substr. DH10B
Type:
Expression profiling by array
Platform:
GPL3154
6 Samples
Download data: CEL
Series
Accession:
GSE37780
ID:
200037780
5.

The transcriptome of Klebsiella oxytoca M5a1 during onset of nitrogen fixation

(Submitter supplied) Purpose: Klebsiella oxytoca M5a1 (previously Klebsiella pneumonia M5a1) is a principle model organism for free-living biological nitrogen fixation. This strain has been used for decades in the characterisation of nitrogenase function and the genetic regulation of nitrogen fixation physiology. Currently it represents a key model for synthetic biology and biotechnology approaches. This project involves a multi-omics approach to modelling nitrogen physiology in Klebsiella oxytoca M5a1, in order to inform rational genetic engineering for improved nitrogen fixation activity. more...
Organism:
Klebsiella oxytoca
Type:
Expression profiling by high throughput sequencing
Platform:
GPL29593
3 Samples
Download data: XLS
Series
Accession:
GSE164668
ID:
200164668
6.

Redirection of metabolism for biological hydrogen production

(Submitter supplied) Photosynthetic microbes can produce the clean-burning fuel hydrogen using one of nature’s most plentiful resources, sunlight 1,2. Anoxygenic photosynthetic bacteria generate hydrogen and ammonia during a process known as biological nitrogen fixation. This reaction is catalyzed by the enzyme nitrogenase and consumes nitrogen gas, ATP and electrons 3. One bacterium, Rhodopseudomonas palustris, has a remarkable ability to obtain electrons from green plant-derived material 4,5 and to efficiently absorb both high and low intensity light energy to form ATP 6. more...
Organism:
Rhodopseudomonas palustris
Type:
Expression profiling by array
Platform:
GPL3954
14 Samples
Download data: CEL, EXP
Series
Accession:
GSE5194
ID:
200005194
7.

Differential expression of rice root genes upon Rhodotorula treatment

(Submitter supplied) The experiments were performed to understand the molecular basis of plant growth promotion in rice by Rhodotorula mucilaginosa JGTA-S1, an endophytic yeast from Typha angustifolia.
Organism:
Oryza sativa
Type:
Expression profiling by array
Platform:
GPL19566
6 Samples
Download data: CEL
Series
Accession:
GSE99075
ID:
200099075
8.

How post-translational modification of nitrogenase is circumvented in Rhodopseudomonas palustris strains that produce hydrogen gas constitutively

(Submitter supplied) Characterization of post-translational modification of nitrogenase in Rhodopseudomonas palustris strains that produce hydrogen gas constitutively.
Organism:
Rhodopseudomonas palustris
Type:
Expression profiling by array
Platforms:
GPL2697 GPL3954
22 Samples
Download data: CEL, TXT
Series
Accession:
GSE32292
ID:
200032292
9.

A hybrid nitrogenase with regulatory elasticity in Azotobacter vinelandii

(Submitter supplied) Biological nitrogen fixation, the microbial reduction of atmospheric nitrogen to bioavailable ammonia, represents both a major limitation on biological productivity and a highly desirable engineering target for synthetic biology. However, the engineering of nitrogen fixation requires an integrated understanding of how the gene regulatory dynamics of host diazotrophs respond across sequence-function space of its central catalytic metalloenzyme, nitrogenase. more...
Organism:
Azotobacter vinelandii DJ
Type:
Expression profiling by high throughput sequencing
Platform:
GPL33461
6 Samples
Download data: TXT
Series
Accession:
GSE234075
ID:
200234075
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