| pkn22 (alr2502) encoding a putative Ser/Thr kinase in the cyanobacterium Anabaena sp PCC 7120 is induced by both iron starvation and oxidative stress and regulates the expression of isiA | |
| Xu, WL; Jeanjean, R; Liu, YD; Zhang, CC; Zhang, CC, CNRS, IBSM, Chim Bacterienne Lab, 31 Chemin Joseph Aiguier, F-13402 Marseille 20, France | |
| 2003 | |
| Source Publication | FEBS LETTERS
 |
| Volume | 553Issue:1-2Pages:179-182 |
| Abstract | In cyanobacteria, the isiA gene is required for cell adaptation to oxidative damage caused by the absence of iron. We show here that a putative Ser/Thr kinase gene, pkn22 (alr2052), is activated by iron deficiency and oxidative damage in Anabaena sp. PCC 7120. A pkn22 insertion mutant is unable to grow when iron is limiting. pkn22 regulates the expression of isiA (encoding CP43') but not of isiB (encoding flavodoxin) and psbC (CP43). Fluorescence measurement at 77 K reveals the absence of the typical signature of CP43' associated with photosystem I in the mutant under iron-limiting conditions. We propose that Pkn22 is required for the function of isiA/CP43' and constitutes a regulatory element necessary for stress response. (C) 2003 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved. |
| Keyword | Signal Transduction Iron Photosynthesis Protein Phosphorylation |
| Department | CNRS, IBSM, Chim Bacterienne Lab, F-13402 Marseille 20, France; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China; Huazhong Agr Univ, Key Lab Agromicrobiol, Wuhan 430070, Hubei, Peoples R China |
| Subject Area | Biochemistry & Molecular Biology ; Biophysics ; Cell Biology |
| Indexed By | SCI |
| WOS ID | WOS:000185877600034 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ihb.ac.cn/handle/152342/9634 |
| Collection | 期刊论文 |
| Corresponding Author | Zhang, CC, CNRS, IBSM, Chim Bacterienne Lab, 31 Chemin Joseph Aiguier, F-13402 Marseille 20, France |
| Recommended Citation GB/T 7714 | Xu, WL,Jeanjean, R,Liu, YD,et al. pkn22 (alr2502) encoding a putative Ser/Thr kinase in the cyanobacterium Anabaena sp PCC 7120 is induced by both iron starvation and oxidative stress and regulates the expression of isiA[J]. FEBS LETTERS,2003,553(1-2):179-182. |
| APA | Xu, WL,Jeanjean, R,Liu, YD,Zhang, CC,&Zhang, CC, CNRS, IBSM, Chim Bacterienne Lab, 31 Chemin Joseph Aiguier, F-13402 Marseille 20, France.(2003).pkn22 (alr2502) encoding a putative Ser/Thr kinase in the cyanobacterium Anabaena sp PCC 7120 is induced by both iron starvation and oxidative stress and regulates the expression of isiA.FEBS LETTERS,553(1-2),179-182. |
| MLA | Xu, WL,et al."pkn22 (alr2502) encoding a putative Ser/Thr kinase in the cyanobacterium Anabaena sp PCC 7120 is induced by both iron starvation and oxidative stress and regulates the expression of isiA".FEBS LETTERS 553.1-2(2003):179-182. |
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