Assignment of the mu(4)-O5 atom in catalytic center for water oxidation in photosystem II
文献类型：期刊论文
| 作者 | Wang YaNan; Zhang ChunXi; Wang Luan; Zhao JingQuan |
| 刊名 | CHINESE SCIENCE BULLETIN
 |
| 出版日期 | 2013-09-01 |
| 卷号 | 58期号:26页码:3213-3216 |
| 关键词 | Photosystem Ii Mn-cluster Water Oxidation Mn-complex Dft Calculation |
| ISSN号 | 1001-6538 |
| DOI | 10.1007/s11434-013-5973-1 |
| 英文摘要 | The detailed structure of catalytic center of water oxidation, Mn4Ca-cluster, in photosystem II (PSII) has been reported recently. However, due to the radiation damage induced by X-ray and the complexity of the Mn4Ca-cluster, the assignment of the mu(4)-O5 atom coordinated by three Mn and one Ca2+ ions is still lack of essential evidences. In this article, we synthesized one Mn complex containing two mu(4)-O atoms. It is found that the lengths of all mu(4)-O-Mn bonds in this Mn complex are in the range of 1.89-2.10 , which are significantly shorter than 2.40-2.61 distance of mu(4)-O5-Mn bonds in Mn4Ca-cluster observed in the crystal structure of PSII. In addition, DFT calculations have been carried out on the Mn4Ca-cluster. It is found that the O atom of mu(4)-O or mu(4)-OH always trends to deviate from the center position of four metal ions, resulting in unequal bond lengths of four mu(4)-O-M (M=Mn or Ca), which is obviously different with larger and nearly equal distances between mu(4)-O and four metal ions observed in the crystal structure. Based on these results, we suggest that the mu(4)-atom in Mn4Ca-cluster of PSII is unlikely to be a mu(4)-O, mu(4)-OH or mu(4)-OH2, and its assignment is still an open question. |
| 语种 | 英语 |
| WOS记录号 | WOS:000323741500008 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/54787]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhang ChunXi |
| 作者单位 | Chinese Acad Sci, Inst Chem, Lab Photochem, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang YaNan,Zhang ChunXi,Wang Luan,et al. Assignment of the mu(4)-O5 atom in catalytic center for water oxidation in photosystem II[J]. CHINESE SCIENCE BULLETIN,2013,58(26):3213-3216. |
| APA | Wang YaNan,Zhang ChunXi,Wang Luan,&Zhao JingQuan.(2013).Assignment of the mu(4)-O5 atom in catalytic center for water oxidation in photosystem II.CHINESE SCIENCE BULLETIN,58(26),3213-3216. |
| MLA | Wang YaNan,et al."Assignment of the mu(4)-O5 atom in catalytic center for water oxidation in photosystem II".CHINESE SCIENCE BULLETIN 58.26(2013):3213-3216. |
入库方式： OAI收割
来源：化学研究所
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