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Redox-sensitive GFP in Arabidopsis thaliana is a quantitative biosensor for the redox potential of the cellular glutathione redox buffer.
- A. Meyer, T. Brach, R. Hell
- Biology, Environmental ScienceThe Plant journal : for cell and molecular…
- 1 December 2007
The results with roGFP2 as an artificial GRX target further suggest that redox-triggered changes of biologic processes might be linked directly to the glutathione redox potential via GRX as the mediator.
Plant Glutathione Peroxidases Are Functional Peroxiredoxins Distributed in Several Subcellular Compartments and Regulated during Biotic and Abiotic Stresses1[W]
The abundance of some Gpxs is modified in plants subjected to environmental constraints, generally increasing during fungal infection, water deficit, and metal stress, and decreasing during photooxidative stress, showing that Gpx proteins are involved in the response to both biotic and abiotic stress conditions.
The role of glutathione in photosynthetic organisms: emerging functions for glutaredoxins and glutathionylation.
The pathways involved in the synthesis, reduction, polymerization, and degradation of glutathione are described, as well as its distribution throughout the plant and its redox buffering capacities.
Reactive oxygen species generation and antioxidant systems in plant mitochondria
This review describes the various mitochondrial redox pathways for ROS control in plants with special emphasis on the poorly studied GRX and TRX systems and provides perspectives for future research in this area.
Chloroplast monothiol glutaredoxins as scaffold proteins for the assembly and delivery of [2Fe–2S] clusters
It is demonstrated that chloroplast CGFS Grxs have the potential to function as scaffold proteins for the assembly of [2Fe–2S] clusters that can be transferred intact to physiologically relevant acceptor proteins.
Thioredoxin links redox to the regulation of fundamental processes of plant mitochondria.
- Y. Balmer, W. Vensel, B. Buchanan
- BiologyProceedings of the National Academy of Sciences…
- 24 February 2004
The results support the view that Trx acts as a sensor and enables mitochondria to adjust key reactions in accord with prevailing redox state and suggest that, by sensing redox in chloroplasts and mitochondria, Trx enables the two organelles of photosynthetic tissues to communicate by means of a network of transportable metabolites.
The plant thioredoxin system
This review discusses the literature of plant thioredoxins with emphasis on recent findings in the field and based upon primary sequence analysis and subcellular localization, thiOREDoxins can be classified into different groups and subgroups.
Plant glutaredoxins: still mysterious reducing systems
- N. Rouhier, E. Gelhaye, J. Jacquot
- Biology, ChemistryCellular and Molecular Life Sciences CMLS
- 1 May 2004
Additional putative functions are proposed for plant glutaredoxins based on their targets in other organisms and in the light of the existence of hybrid proteins containing glutaredoxin modules in their N- or C-terminal part.
Oxidation-reduction properties of chloroplast thioredoxins, ferredoxin:thioredoxin reductase, and thioredoxin f-regulated enzymes.
Oxidation-reduction midpoint potentials were determined, as a function of pH, for the disulfide/dithiol couples of spinach and pea thioredoxins f and m, for FTR, and for pea FBPase, and the slope of the Em versus pH profile for PRK shows three regions, consistent with the presence of pKa values for the two regulatory cysteines in the region between pH 7.5 and 9.0.
Functional, structural, and spectroscopic characterization of a glutathione-ligated [2Fe–2S] cluster in poplar glutaredoxin C1
Analytical and spectroscopic studies of wild-type protein and site-directed variants and structural characterization of the holoprotein indicate that theholoprotein contains a subunit-bridging [2Fe–2S] cluster that is ligated by the catalytic cysteine of two glutaredoxins and the cysteines of three glutathiones.