ArticleThe Journal of biological chemistry2016
Novel Features of Eukaryotic Photosystem II Revealed by Its Crystal Structure Analysis from a Red Alga.
Article in The Journal of biological chemistry, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.
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50 citing papers in PubMed, 122 citations in OpenAlex.
- Pathogen effector tactics to suppress plant endomembrane system.Frontiers in plant science · 2026Review
- Structural insights into a PSI-ACPI supercomplex from a cryptophyte alga Chroomonas placoidea.Photosynthesis research · 2025Article
- Photosystem II: commonality and diversity with emphasis on the extrinsic subunits.Plant & cell physiology · 2025Review
- The Photosynthetic Complexes of Thylakoid Membranes of Photoautotrophs and a Quartet of Their Polar Lipids.International journal of molecular sciences · 2025Review
- Structure of a photosystem II-FCPII supercomplex from a haptophyte reveals a distinct antenna organization.Nature communications · 2025Article
- The structural basis for light harvesting in organisms producing phycobiliproteins.The Plant cell · 2024Review
- Structure of cryptophyte photosystem II-light-harvesting antennae supercomplex.Nature communications · 2024Article
- Structure and distinct supramolecular organization of a PSII-ACPII dimer from a cryptophyte alga Chroomonas placoidea.Nature communications · 2024Article
- Evolutionary diversity of proton and water channels on the oxidizing side of photosystem II and their relevance to function.Photosynthesis research · 2023Review
- Structure of a diatom photosystem II supercomplex containing a member of Lhcx family and dimeric FCPII.Science advances · 2023Article
- Solar energy conversion by photosystem II: principles and structures.Photosynthesis research · 2023Review
- Article
- Structure ofeLife · 2023Article
- Phycobilisomes and Phycobiliproteins in the Pigment Apparatus of Oxygenic Photosynthetics: From Cyanobacteria to Tertiary Endosymbiosis.International journal of molecular sciences · 2023Review
- Iron Deficiency Promotes the Lack of Photosynthetic CytochromeInternational journal of molecular sciences · 2022Article
- Binding and functions of the two chloride ions in the oxygen-evolving center of photosystem II.Photosynthesis research · 2022Review
- Macromolecular conformational changes in photosystem II: interaction between structure and function.Biophysical reviews · 2022Review
- Comparison of PsbQ and Psb27 in photosystem II provides insight into their roles.Photosynthesis research · 2022Article
- High-resolution cryo-electron microscopy structure of photosystem II from the mesophilic cyanobacterium,Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- The PsbJ protein is required for photosystem II activity in centers lacking the PsbO and PsbV lumenal subunits.Photosynthesis research · 2022Article
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Authors and funding
15 authors at 7 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Photosystem II (PSII) catalyzes light-induced water splitting, leading to the evolution of molecular oxygen indispensible for life on the earth. The crystal structure of PSII from cyanobacteria has been solved at an atomic level, but the structure of eukaryotic PSII has not been analyzed. Because eukaryotic PSII possesses additional subunits not found in cyanobacterial PSII, it is important to solve the structure of eukaryotic PSII to elucidate their detailed functions, as well as evolutionary relationships. Here we report the structure of PSII from a red alga Cyanidium caldarium at 2.76 Å resolution, which revealed the structure and interaction sites of PsbQ', a unique, fourth extrinsic protein required for stabilizing the oxygen-evolving complex in the lumenal surface of PSII. The PsbQ' subunit was found to be located underneath CP43 in the vicinity of PsbV, and its structure is characterized by a bundle of four up-down helices arranged in a similar way to those of cyanobacterial and higher plant PsbQ, although helices I and II of PsbQ' were kinked relative to its higher plant counterpart because of its interactions with CP43. Furthermore, two novel transmembrane helices were found in the red algal PSII that are not present in cyanobacterial PSII; one of these helices may correspond to PsbW found only in eukaryotic PSII. The present results represent the first crystal structure of PSII from eukaryotic oxygenic organisms, which were discussed in comparison with the structure of cyanobacterial PSII.
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