XANES OF MANGANESE IN PHOTOSYSTEM II

光系统 II 中锰的 X 元素

• 批准号: 6658652
• 负责人: MELVIN P KLEIN
• 金额: $ 14.32万
• 依托单位: STANFORD UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-03-01 至 2003-02-28
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6658652
• 关键词: biomaterials; biomedical resource; plants; proteins; spectrometry; structural biology

We intend to acquire more detailed information on the actual redox states of the Mn-cluster of Photosystem II, in the different S-states, by way of Mn K-edge XANES. The two sets of XANES data on flash-induced changes in the OEC presently available (performed by two different groups, on two different kinds of preparations) do not agree with each other in some essential aspects of the involvement of Mn oxidation in the various S-state transitions. It is our specific aim to perform XANES experiments on the different types of samples, but under otherwise identical conditions, by a collaborative effort with the other group. This should enable us to settle the existing discrepancy on the involvement of Mn-redox chemistry in the different S-state transitions, which will be essential for understanding the mechanism of photosynthetic water oxidation.

我们打算获得关于实际氧化还原的更详细的信息