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Proteomic identification of glyceraldehyde 3-phosphate dehydrogenase as an inhibitory target of hydrogen peroxide in Arabidopsis

Harrison, Judith; Hancock, John T.; Henson, Dan; Nyirenda, Mukanthu; Desikan, Radhika; Lewis, Mervyn; Neill, Steven; Hughes, Jenna


Judith Harrison

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John Hancock
Professor in Cell Signalling

Dan Henson

Mukanthu Nyirenda

Radhika Desikan

Mervyn Lewis

Jenna Hughes


Hydrogen peroxide (H2O2) is now recognised as a key signalling molecule in eukaryotes. In plants, H2O2 is involved in regulating stomatal closure, gravitropic responses, gene expression and programmed cell death. Although several kinases, such as oxidative signal-inducible 1 (OXI1) kinase and mitogen-activated protein kinases are known to be activated by exogenous H2O2, little is known about the proteins that directly react with H2O2. Here, we utilised a proteomic approach, using iodoacetamide-based fluorescence tagging of proteins in conjunction with mass spectrometric analysis, to identify several proteins that might be potential targets of H2O2 in the cytosolic fraction of Arabidopsis thaliana, the most prominent of which was cytosolic glyceraldehyde 3-phosphate dehydrogenase (cGAPDH; EC cGAPDH from Arabidopsis is inactivated by H2O2 in vitro, and this inhibition is reversible by the subsequent addition of reductants such as reduced glutathione (GSH). It has been suggested recently that Arabidopsis GAPDH has roles outside of its catalysis as part of glycolysis, while in other systems this includes that of mediating reactive oxygen species (ROS) signalling. Here, we suggest that cGAPDH in Arabidopsis might also have such a role in mediating ROS signalling in plants. © 2005 Elsevier SAS. All rights reserved.


Harrison, J., Hancock, J. T., Henson, D., Nyirenda, M., Desikan, R., Lewis, M., …Neill, S. (2005). Proteomic identification of glyceraldehyde 3-phosphate dehydrogenase as an inhibitory target of hydrogen peroxide in Arabidopsis. Plant Physiology and Biochemistry, 43(9), 828-835.

Journal Article Type Article
Publication Date Sep 1, 2005
Journal Plant Physiology and Biochemistry
Print ISSN 0981-9428
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 43
Issue 9
Pages 828-835
Keywords arabidopsis thaliana, glyceraldehyde 3-phosphate dehydrogenase, hydrogen peroxide, proteomics, reactive oxygen species signalling
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