ArticleJournal of bacteriology2008
Redox-state dynamics of ubiquinone-10 imply cooperative regulation of photosynthetic membrane expression in Rhodospirillum rubrum.
Article in Journal of bacteriology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed.
- Exploring Rhodospirillum rubrum response to high doses of carbon monoxide under light and dark conditions.Applied microbiology and biotechnology · 2024Article
- Aerobic-anaerobic transition boosts poly(3-hydroxybutyrate-co-3-hydroxyvalerate) synthesis in Rhodospirillum rubrum: the key role of carbon dioxide.Microbial cell factories · 2023Article
- RegAB Homolog of Burkholderia pseudomallei is the Master Regulator of Redox Control and involved in Virulence.PLoS pathogens · 2021Article
- Investigation of candidate genes involved in the rhodoquinone biosynthetic pathway in Rhodospirillum rubrum.PloS one · 2019Article
- Energy shifts induce membrane sequestration of DraG in Rhodospirillum rubrum independent of the ammonium transporters and diazotrophic conditions.FEMS microbiology letters · 2018Article
- Electrochemically active bacteria sense electrode potentials for regulating catabolic pathways.Nature communications · 2018Article
- The RegA regulon exhibits variability in response to altered growth conditions and differs markedly betweenMicrobial genomics · 2016Article
- Article
- Identification of chromatophore membrane protein complexes formed under different nitrogen availability conditions in Rhodospirillum rubrum.Journal of proteome research · 2011Article
- A glutathione redox effect on photosynthetic membrane expression in Rhodospirillum rubrum.Journal of bacteriology · 2011Article
- Regulation and Function of Versatile Aerobic and Anaerobic Respiratory Metabolism in Pseudomonas aeruginosa.Frontiers in microbiology · 2011Article
- Article
- The ArcBA two-component system of Escherichia coli is regulated by the redox state of both the ubiquinone and the menaquinone pool.Journal of bacteriology · 2010Article
- Kinetics of in vivo bacteriochlorophyll fluorescence yield and the state of photosynthetic apparatus of purple bacteria.Photosynthesis research · 2009Article
- The photosynthetic apparatus and its regulation in the aerobic gammaproteobacterium Congregibacter litoralis gen. nov., sp. nov.PloS one · 2009Article
Corrections and comments
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Authors and funding
2 authors.
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Abstract
It is now well established that, for photosynthetic bacteria, the aerobic-to-microaerophilic transition activates the membrane-bound sensor kinase RegB, which subsequently phosphorylates the transcriptional activator RegA, thereby inducing elevated levels of intracellular photosynthetic membranes. The mechanism of RegB activation--in particular, the role of ubiquinone-10--is controversial at present. One problem here is that very limited quantitative in vivo data for the response of the ubiquinone redox state to different cultivation conditions exist. Here, we utilize Rhodospirillum rubrum to study the correlation of the quinone redox state to the expression level of photosynthetic membranes and determine an effective response function directly. Our results show that changes in the photosynthetic membrane levels between 50 and 95% of that maximally attainable are associated with only a twofold change in the ubiquinol/ubiquinone ratio and are not necessarily proportional to the total levels of either quinone or [NAD(+) + NADH]. There is no correlation between the redox potentials of the quinone and pyridine nucleotide pools. Hill function analysis of the photosynthetic membrane induction in response to the quinone redox state suggests that the induction process is highly cooperative. Our results are probably generally applicable to quinone redox regulation in bacteria.
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