ArticlePhotosynthesis research
Effects of methanol on the Si-state transitions in photosynthetic water-splitting.
Article in Photosynthesis research. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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13 citing papers in PubMed, 27 citations in OpenAlex.
- The structure of intact and active Photosystem II from Arabidopsis thaliana at 2.44 Å resolution.The New phytologist · 2026Article
- Ammonia Binding to the Oxygen-Evolving Complex Probed by High-Energy Resolution Fluorescence Detected X-Ray Absorption Spectroscopy.The journal of physical chemistry. B · 2025Article
- Comprehensive Evaluation of Models for Ammonia Binding to the Oxygen Evolving Complex of Photosystem II.The journal of physical chemistry. B · 2024Article
- Impact of energy limitations on function and resilience in long-wavelength Photosystem II.eLife · 2022Article
- The exchange of the fast substrate water in the SChemical science · 2021Article
- Five-coordinate MnProceedings of the National Academy of Sciences of the United States of America · 2019Article
- Interaction of methanol with the oxygen-evolving complex: atomistic models, channel identification, species dependence, and mechanistic implications.Chemical science · 2016Article
- Metal oxidation states in biological water splitting.Chemical science · 2015Article
- Crystal structure and functional characterization of photosystem II-associated carbonic anhydrase CAH3 in Chlamydomonas reinhardtii.Plant physiology · 2015Article
- Pulse electron paramagnetic resonance studies of the interaction of methanol with the S2 state of the Mn4O5Ca cluster of photosystem II.Biochemistry · 2014Article
- Efficiency of photosynthetic water oxidation at ambient and depleted levels of inorganic carbon.Photosynthesis research · 2013Article
- Is Mn-Bound Substrate Water Protonated in the S(2) State of Photosystem II?Applied magnetic resonance · 2010Article
- Probing tyrosine Z oxidation in Photosystem II core complex isolated from spinach by EPR at liquid helium temperatures.Photosynthesis research · 2009Article
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Authors and funding
4 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
From a chemical point of view methanol is one of the closest analogues of water. Consistent with this idea EPR spectroscopy studies have shown that methanol binds at-or at least very close to-the Mn(4)O(x)Ca cluster of photosystem II (PSII). In contrast, Clark-type oxygen rate measurements demonstrate that the O(2) evolving activity of PSII is surprisingly unaffected by methanol concentrations of up to 10%. Here we study for the first time in detail the effect of methanol on photosynthetic water-splitting by employing a Joliot-type bare platinum electrode. We demonstrate a linear dependence of the miss parameter for S( i ) state advancement on the methanol concentrations in the range of 0-10% (v/v). This finding is consistent with the idea that methanol binds in PSII with similar affinity as water to one or both substrate binding sites at the Mn(4)O(x)Ca cluster. The possibility is discussed that the two substrate water molecules bind at different stages of the cycle, one during the S(4) --> S(0) and the other during the S(2) --> S(3) transition.
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