Thiol-based redox homeostasis and signalling

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Francisco J. Cejudo, Andreas J. Meyer, Jean-Philippe Reichheld, Nicolas Rouhier, Jose A. Traverso
Frontiers E-books, Sep 24, 2014 - Botany - 235 pages

In contrast to the situation in heterotrophic organisms, plant genomes code for a significantly larger number of oxidoreductases such as thioredoxins (TRXs) and glutaredoxins (GRXs). These proteins provide a biochemical mechanism that allows the rapid and reversible activation or deactivation of protein functions in response to changing environmental conditions, as oxidative conditions caused by excessive photosynthesis. Indeed, owing to the fact that cysteines are sensitive to oxidation, TRXs and GRXs play an essential role in controlling the redox state of protein thiol groups. These redox-dependent post-translational modifications have proven to be critical for many cellular functions constituting regulatory, signalling or protective mechanisms. 

The articles contained in this Research Topic provide timely overviews and new insights into thiol-dependent redox regulation mechanisms with a focus on TRX- and GRX-based reduction systems in plants. The different contexts discussed take into account physiological, developmental and environmental conditions.

 

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Contents

Thiolbased redox homeostasis and signaling
5
something old something new
8
a oneforall redoxsignaling system in plants
29
Overexpression of plastidial thioredoxins f and m differentially alters photosynthetic activity and response to oxidative stress in tobacco plants
39
a thioredoxinmediated metabolic switch?
52
Operation of transthylakoid thiolmetabolizing pathways in photosynthesis
61
balancing toxic and signaling activities of hydrogen peroxide
67
Thiolbased redox control of enzymes involved in the tetrapyrrole biosynthesis pathway in plants
73
Kinetic analysis of the interactions between plant thioredoxin and target proteins
129
redox posttranslational modifications and moonlighting properties
137
biochemical basis for the definition of two subclasses
155
Glutaredoxins are essential for stress adaptation in the cyanobacterium Synechocystis sp PCC 6803
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Utility of Synechocystis sp PCC 6803 glutaredoxin A as a platform to study highresolution mutagenesis of proteins
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how is glutathione oxidized in plants?
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A phenomics approach to the analysis of the influence of glutathione on leaf area and abiotic stress tolerance in arabidopsis thaliana
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Thiolbased redox signaling in the nitrogenfixing symbiosis
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Redoxdependent functional switching of plant proteins accompanying with their structural changes
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Overexpression of chloroplast nadphdependent thioredoxin reductase in arabidopsis enhances leaf growth and elucidates in vivo function of reductas...
91
Dissecting the integrative antioxidant and redox systems in plant mitochondria Effect of stress and Snitrosylation
109
new insights and perspectives
222
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