Highly efficient photoactivation of Mn-depleted photosystem II by imidazole-liganded manganese complexes
文献类型：期刊论文
| 作者 | Liu, B; Shen, PP; Shi, W; Song, YG; Li, W; Nie, Z; Liu, Y |
| 刊名 | JOURNAL OF BIOLOGICAL INORGANIC CHEMISTRY
 |
| 出版日期 | 2006-07-01 |
| 卷号 | 11期号:5页码:626-632 |
| 关键词 | Manganese Complex Oxygen-evolving Complex Hydrogen-bonding Network Photoactivation Photosystem Ii |
| ISSN号 | 0949-8257 |
| DOI | 10.1007/s00775-006-0111-z |
| 英文摘要 | The oxygen-evolving complex (OEC) of Mn-depleted photosystem II (PSII) can be reconstituted in the presence of exogenous Mn or a Mn complex under weak illumination, a process called photoactivation. Synthetic Mn complexes could provide a powerful system to analyze the assembly of the OEC. In this work, four mononuclear Mn complexes, [(terpy)(2)Mn-II(OOCH3)]center dot 2H(2)O (where terpy is 2,2':6',2"-terpyridine), Mn-II(bzimpy)(2), Mn-II(bp)(2)(CH3CH2OH)(2) [where bzimpy is 2,6-bis(2-benzimidazol-2-yl)pyridine] and [Mn-III(HL)(L)(py)(CH3OH)]CH3OH (where py is pyridine) were used in photoactivation experiments. Measurements of the photoreduction of 2,6-dichorophenolindophenol and oxygen evolution demonstrate that photoactivation is more efficient when Mn complexes are used instead of MnCl2 in reconstructed PSII preparations. The most efficient recoveries of oxygen evolution and electron transport activities are obtained from a complex, [Mn-III(HL)(L)(py)(CH3OH)]CH3OH, that contains both imidazole and phenol groups. Its recovery of the rate of oxygen evolution is as high as 79% even in the absence of the 33-kDa peptide. The imidazole ligands of the Mn complex probably accelerate P-680(center dot+) reduction and consequently facilitate the process of photoactivation. Also, the strong intermolecular hydrogen bond probably facilitates interaction with the Mn-depleted PSII via reorganization of the hydrogen-bonding network, and therefore promotes the recovery of oxygen evolution and electron transport activities. |
| 语种 | 英语 |
| WOS记录号 | WOS:000238499000009 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/59033]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Liu, Y |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, State Key Lab Struct Chem Unstable & Stable Speci, Ctr Mol Sci, Beijing 100080, Peoples R China 2.Nanjing Univ, State Key Lab Pharmaceut & Biotechnol, Dept Biochem, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, B,Shen, PP,Shi, W,et al. Highly efficient photoactivation of Mn-depleted photosystem II by imidazole-liganded manganese complexes[J]. JOURNAL OF BIOLOGICAL INORGANIC CHEMISTRY,2006,11(5):626-632. |
| APA | Liu, B.,Shen, PP.,Shi, W.,Song, YG.,Li, W.,...&Liu, Y.(2006).Highly efficient photoactivation of Mn-depleted photosystem II by imidazole-liganded manganese complexes.JOURNAL OF BIOLOGICAL INORGANIC CHEMISTRY,11(5),626-632. |
| MLA | Liu, B,et al."Highly efficient photoactivation of Mn-depleted photosystem II by imidazole-liganded manganese complexes".JOURNAL OF BIOLOGICAL INORGANIC CHEMISTRY 11.5(2006):626-632. |
入库方式： OAI收割
来源：化学研究所
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