ArticleJournal of bacteriology2007
Coordinated high-light response of genes encoding subunits of photosystem I is achieved by AT-rich upstream sequences in the cyanobacterium Synechocystis sp. strain PCC 6803.
Article in Journal of bacteriology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 17 citations in OpenAlex.
- Expanding the toolbox forSynthetic biology (Oxford, England) · 2018Article
- Translating Divergent Environmental Stresses into a Common Proteome Response through the Histidine Kinase 33 (Hik33) in a Model Cyanobacterium.Molecular & cellular proteomics : MCP · 2017Article
- Wide-dynamic-range promoters engineered for cyanobacteria.Journal of biological engineering · 2013Article
- Acclimation to high-light conditions in cyanobacteria: from gene expression to physiological responses.Journal of plant research · 2012Review
- Application of synthetic biology in cyanobacteria and algae.Frontiers in microbiology · 2012Article
- Role of multiple HLR1 sequences in the regulation of the dual promoters of the psaAB genes in Synechocystis sp. PCC 6803.Journal of bacteriology · 2010Article
- Comparative genomics reveals 104 candidate structured RNAs from bacteria, archaea, and their metagenomes.Genome biology · 2010Article
- Simultaneous inactivation of sigma factors B and D interferes with light acclimation of the cyanobacterium Synechocystis sp. strain PCC 6803.Journal of bacteriology · 2009Article
- The response regulator RpaB binds to the upstream element of photosystem I genes to work for positive regulation under low-light conditions in Synechocystis sp. Strain PCC 6803.Journal of bacteriology · 2009Article
- Role of sigma factors in controlling global gene expression in light/dark transitions in the cyanobacterium Synechocystis sp. strain PCC 6803.Journal of bacteriology · 2007Article
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2 authors at 1 institution in 1 country.
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Abstract
Genes encoding subunits of photosystem I (PSI genes) in the cyanobacterium Synechocystis sp. strain PCC 6803 are actively transcribed under low-light conditions, whereas their transcription is coordinately and rapidly down-regulated upon the shift to high-light conditions. In order to identify the molecular mechanism of the coordinated high-light response, we searched for common light-responsive elements in the promoter region of PSI genes. First, the precise architecture of the psaD promoter was determined and compared with the previously identified structure of the psaAB promoter. One of two promoters of the psaAB genes (P1) and of the psaD gene (P2) possessed an AT-rich light-responsive element located just upstream of the basal promoter region. These sequences enhanced the basal promoter activity under low-light conditions, and their activity was transiently suppressed upon the shift to high-light conditions. Subsequent analysis of psaC, psaE, psaK1, and psaLI promoters revealed that their light response was also achieved by AT-rich sequences located at the -70 to -46 region. These results clearly show that AT-rich upstream elements are responsible for the coordinated high-light response of PSI genes dispersed throughout Synechocystis genome.
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