ArticlePhotosynthesis research2004
Early indications for manganese oxidation state changes during photosynthetic oxygen production: a personal account.
Article in Photosynthesis research, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed, 14 citations in OpenAlex.
- Thomas John Wydrzynski (8 July 1947-16 March 2018).Photosynthesis research · 2019Article
- The mystery of oxygen evolution: analysis of structure and function of photosystem II, the water-plastoquinone oxido-reductase.Photosynthesis research · 2005Review
- Discoveries in oxygenic photosynthesis (1727-2003): a perspective.Photosynthesis research · 2004Article
- Recollections of Thomas John Wydrzynski.Photosynthesis researchArticle
Corrections and comments
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Authors and funding
1 author at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
One of the major questions yet to be answered in photosynthesis research today is what is the chemical mechanism for the oxidation of water into molecular oxygen. It is well established that an inorganic cluster of four manganese ions and at least one calcium ion form the catalytic core. As the oxidation potential generated by the Photosystem II reaction center is accumulated over the four sequential steps needed to produce O(2), changes in the oxidation state of the catalytic manganese occur, though the formal oxidation states that are involved are still a matter of considerable debate. Much of what is currently known has come from direct measurements of the catalytic manganese using electron paramagnetic resonance (EPR) and X-ray spectroscopy. However, in the early attempts to attack this problem, the catalytic manganese was monitored indirectly by its paramagnetic effect on the nuclear magnetic resonance (NMR) relaxation rates of solvent water protons. In this contribution, a description of the proton relaxation rate phenomenon and its use to indicate manganese oxidation state changes during O(2) production is presented.
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Registered trials
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