ArticleJournal of bacteriology1996
Regulation by cyanate of the genes involved in carbon and nitrogen assimilation in the cyanobacterium Synechococcus sp. strain PCC 7942.
Article in Journal of bacteriology, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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Who cites it
19 citing papers in PubMed, 47 citations in OpenAlex.
- Structural mechanism of Escherichia coli cyanase.Acta crystallographica. Section D, Structural biology · 2023Article
- The genomes of Vischeria oleaginous microalgae shed light on the molecular basis of hyper-accumulation of lipids.BMC biology · 2023Article
- Horizontal gene transfer provides insights into the deep evolutionary history and biology ofFood and waterborne parasitology · 2022Article
- Survivability of Wild-Type and Genetically EngineeredApplied biosafety : journal of the American Biological Safety Association · 2020Article
- Cultivation and Transcriptional Analysis of a CanonicalFrontiers in microbiology · 2019Article
- Functional expression of an oxygen-labile nitrogenase in an oxygenic photosynthetic organism.Scientific reports · 2018Article
- A New Perspective on Microbes Formerly Known as Nitrite-Oxidizing Bacteria.Trends in microbiology · 2016Review
- NO3-/NO2- assimilation in halophilic archaea: physiological analysis, nasA and nasD expressions.Extremophiles : life under extreme conditions · 2009Article
- Nitrite transport activity of the ABC-type cyanate transporter of the cyanobacterium Synechococcus elongatus.Journal of bacteriology · 2009Article
- Characterization of the Pseudomonas pseudoalcaligenes CECT5344 Cyanase, an enzyme that is not essential for cyanide assimilation.Applied and environmental microbiology · 2008Article
- A novel gene (narM) required for expression of nitrate reductase activity in the cyanobacterium Synechococcus elongatus strain PCC7942.Journal of bacteriology · 2004Article
- Transcriptional activation of NtcA-dependent promoters of Synechococcus sp. PCC 7942 by 2-oxoglutarate in vitro.Proceedings of the National Academy of Sciences of the United States of America · 2002Article
- Nitrogen control in cyanobacteria.Journal of bacteriology · 2001Review
- Nitrite-specific active transport system of the cyanobacterium Synechococcus sp. strain PCC 7942.Journal of bacteriology · 1998Article
- cis-acting sequences required for NtcB-dependent, nitrite-responsive positive regulation of the nitrate assimilation operon in the cyanobacterium Synechococcus sp. strain PCC 7942.Journal of bacteriology · 1998Article
- Identification and nitrogen regulation of the cyanase gene from the cyanobacteria Synechocystis sp. strain PCC 6803 and Synechococcus sp. strain PCC 7942.Journal of bacteriology · 1997Article
- Involvement of NtcB, a LysR family transcription factor, in nitrite activation of the nitrate assimilation operon in the cyanobacterium Synechococcus sp. strain PCC 7942.Journal of bacteriology · 1997Article
- Positive regulation by nitrite of the nitrate assimilation operon in the cyanobacteria Synechococcus sp. strain PCC 7942 and Plectonema boryanum.Journal of bacteriology · 1996Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A mutant (M45) of the cyanobacterium Synechococcus sp. strain PCC 7942, which is defective in active transport of nitrate, was used for the studies of the nitrogen regulation of the genes involved in nitrate and CO2 assimilation. In a medium containing 30 mM nitrate as the nitrogen source, M45 grew under constant stress of nitrogen deficiency and accumulated a five-times-larger amount of the transcript of nirA, the gene for nitrite reductase, compared with nitrate-grown wild-type cells. By contrast, the level of the transcript of rbcL, the gene for the large subunit of ribulose-1,5-bisphosphate carboxylase/oxygenase, was 40% of the wild-type level. Addition of ammonium to the culture of M45 abolished the accumulation of the nirA transcript and stimulated the accumulation of the rbcL transcript, showing that ammonium repressed and activated the transcription of nirA and rbcL, respectively. Glutamine, the initial product of ammonium fixation, also showed negative and positive effects on nirA and rbcL, respectively. One of the metabolites of glutamine, carbamoylphosphate, and its decomposition product, cyanate, were found to repress nirA and also to markedly activate rbcL. Cyanate negatively regulated another ammonium-repressible gene, glnA, but had no effect on the psbAI and rps1 genes. The effects of cyanate were not ascribable to the ammonium and CO, resulting from its decomposition. These findings suggested that cyanate may act as a regulator of the ammonium-responsive genes involved in carbon and nitrogen assimilation in the cyanobacterium.
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