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- Title
A cold-induced thioredoxin h of rice, OsTrx23, negatively regulates kinase activities of OsMPK3 and OsMPK6 in vitro
- Authors
Xie, Guosheng; Kato, Hideki; Sasaki, Kentaro; Imai, Ryozo
- Abstract
Abstract: Cytosolic thioredoxins are small conserved proteins that are involved in cellular redox regulation. Here, we report that a major and cold-induced thioredoxin h of rice, OsTrx23, has an inhibitory activity on stress-activated mitogen-activated protein kinases (MAPKs), OsMPK3 and OsMPK6 in vitro. This inhibition effects were redox-dependent and did not involve stable physical interaction. The data suggested a novel mechanism for redox regulation of MAPKs in plants. Structured summary: MINT-7234362: MPK3 (uniprotkb:Q10N20) phosphorylates (MI:0217) MBP (uniprotkb:P02687) by protein kinase assay (MI:0424) MINT-7234435: MPK6 (uniprotkb:Q336X9) phosphorylates (MI:0217) MBP (uniprotkb:P02687) by protein kinase assay (MI:0424)
- Subjects
COLD therapy; THIOREDOXIN; CELLULAR control mechanisms; MITOGEN-activated protein kinases; RICE; OXIDATION-reduction reaction; PROTEIN kinases; BIOLOGICAL assay
- Publication
FEBS Letters, 2009, Vol 583, Issue 17, p2734
- ISSN
0014-5793
- Publication type
Article
- DOI
10.1016/j.febslet.2009.07.057