ArticleThe EMBO journal2008
The photosystem II-associated Cah3 in Chlamydomonas enhances the O2 evolution rate by proton removal.
Article in The EMBO journal, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.
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Who cites it
35 citing papers in PubMed.
- From proton microdomains to protein migration: hypothesis for ΔpH-controlled PSII relocation.Photosynthesis research · 2026Article
- Sensitivity of Photosystem II to Photoinhibition inInternational journal of molecular sciences · 2026Article
- Elucidating copper ion interactions with carbonic anhydrase: insights from fluorescence quenching and thermodynamic analysis.Photosynthetica · 2026Article
- Highly Active Carbonic Anhydrase of the Thylakoid Lumen ofPlants (Basel, Switzerland) · 2024Article
- CAH3 fromCells · 2024Review
- Solar energy conversion by photosystem II: principles and structures.Photosynthesis research · 2023Review
- Adapting from Low to High: An Update to COPlants (Basel, Switzerland) · 2023Review
- Action of 2,6-Dichloro-1,4-benzoquinone on the OCells · 2023Article
- α-CAs from Photosynthetic Organisms.International journal of molecular sciences · 2022Review
- Macromolecular conformational changes in photosystem II: interaction between structure and function.Biophysical reviews · 2022Review
- Advances in understanding the physiological role and locations of carbonic anhydrases in C3 plant cells.Protoplasma · 2021Review
- Water oxidation by photosystem II is the primary source of electrons for sustained HProceedings of the National Academy of Sciences of the United States of America · 2020Article
- Bicarbonate-Mediated COBiochemistry · 2020Article
- The Main Structural and Functional Characteristics of Photosystem-II-Enriched Membranes Isolated from Wild Type andLife (Basel, Switzerland) · 2020Article
- Elucidation and genetic intervention of COJournal of biosciences · 2020Article
- Vyacheslav (Slava) Klimov (1945-2017): A scientist par excellence, a great human being, a friend, and a Renaissance man.Photosynthesis research · 2018Article
- An Update on the Metabolic Roles of Carbonic Anhydrases in the Model Alga Chlamydomonas reinhardtii.Metabolites · 2018Review
- Cloning, Expression Analysis and Enzyme Activity Assays of the α-Carbonic Anhydrase Gene from Chlamydomonas sp. ICE-L.Molecular biotechnology · 2018Article
- Evolution of the Z-scheme of photosynthesis: a perspective.Photosynthesis research · 2017Review
- Evaluation of new Cu(II) complexes as a novel class of inhibitors against plant carbonic anhydrase, glutathione reductase, and photosynthetic activity in photosystem II.Photosynthesis research · 2017Article
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12 authors.
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Abstract
Water oxidation in photosystem II (PSII) is still insufficiently understood and is assumed to involve HCO(3)(-). A Chlamydomonas mutant lacking a carbonic anhydrase associated with the PSII donor side shows impaired O(2) evolution in the absence of HCO(3)(-). The O(2) evolution for saturating, continuous illumination (R(O2)) was slower than in the wild type, but was elevated by HCO(3)(-) and increased further by Cah3. The R(O2) limitation in the absence of Cah3/HCO(3)(-) was amplified by H(2)O/D(2)O exchange, but relieved by an amphiphilic proton carrier, suggesting a role of Cah3/HCO(3)(-) in proton translocation. Chlorophyll fluorescence indicates a Cah3/HCO(3)(-) effect at the donor side of PSII. Time-resolved delayed fluorescence and O(2)-release measurements suggest specific effects on proton-release steps but not on electron transfer. We propose that Cah3 promotes proton removal from the Mn complex by locally providing HCO(3)(-), which may function as proton carrier. Without Cah3, proton removal could become rate limiting during O(2) formation and thus, limit water oxidation under high light. Our results underlie the general importance of proton release at the donor side of PSII during water oxidation.
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