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231224s2013 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/ert172
|2 doi
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|a DE-627
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|e rakwb
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|a eng
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|a Correa-Aragunde, Natalia
|e verfasserin
|4 aut
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|a Auxin induces redox regulation of ascorbate peroxidase 1 activity by S-nitrosylation/denitrosylation balance resulting in changes of root growth pattern in Arabidopsis
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|c 2013
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 22.10.2013
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|a Date Revised 09.01.2024
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|a published: Print
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|a Citation Status MEDLINE
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|a S-Nitrosylation of Cys residues is one of the molecular mechanisms driven by nitric oxide (NO) for regulating biological functions of key proteins. While the studies on S-nitrosylation of Cys residues have served for identifying SNO proteomes, the physiological relevance of protein S-nitrosylation/denitrosylation remains poorly understood. In this study, it is shown that auxin influences the balance of S-nitrosylated/denitrosylated proteins in roots of Arabidopsis seedlings. 2D-PAGE allowed the identification of ascorbate peroxidase 1 (APX1) as target of auxin-induced denitrosylation in roots. Auxin causes APX1 denitrosylation and partial inhibition of APX1 activity in Arabidopsis roots. In agreement, the S-nitrosylated form of recombinant APX1 expressed in Escherichia coli is more active than the denitrosylated form. Consistently, Arabidopsis apx1 mutants have increased H₂O₂ accumulation in roots, shorter roots, and less sensitivity to auxin than the wild type. It is postulated that an auxin-regulated counterbalance of APX1 S-nitrosylation/denitrosylation contributes to a fine-tuned control of root development and determination of root architecture
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Arabidopsis
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|a S-nitrosylation
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|a ascorbate peroxidase 1
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|a auxin
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|a nitric oxide
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|a root.
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|a Arabidopsis Proteins
|2 NLM
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|a Indoleacetic Acids
|2 NLM
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|a Ascorbate Peroxidases
|2 NLM
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| 650 |
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|a EC 1.11.1.11
|2 NLM
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| 700 |
1 |
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|a Foresi, Noelia
|e verfasserin
|4 aut
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| 700 |
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|a Delledonne, Massimo
|e verfasserin
|4 aut
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| 700 |
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|a Lamattina, Lorenzo
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 64(2013), 11 vom: 26. Aug., Seite 3339-49
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
1 |
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|g volume:64
|g year:2013
|g number:11
|g day:26
|g month:08
|g pages:3339-49
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|u http://dx.doi.org/10.1093/jxb/ert172
|3 Volltext
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