ArticleNature plants2023
Cryo-EM structure of a plant photosystem II supercomplex with light-harvesting protein Lhcb8 and α-tocopherol.
Article in Nature plants, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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17 citing papers in PubMed.
- Optimization of thylakoid solubilization for PSII-LHCII supercomplex isolation from shade-adapted Fittonia albivenis.Photosynthesis research · 2026Article
- Estimation of chloroplast macromolecular complex copy numbers and subunit stoichiometries during the Chlamydomonas reinhardtii cell cycle.The Plant journal : for cell and molecular biology · 2026Article
- Article
- Asymmetric Connectivity Between Redox-Active Tyrosines and Reaction-Center Chlorophylls in Photosystem II.Plants (Basel, Switzerland) · 2026Article
- Higher-order structural organization of mitochondrial metabolism.The Journal of biological chemistry · 2026Review
- Chloroplasts as ingredients for food: a review.Food & function · 2026Review
- The structure of intact and active Photosystem II from Arabidopsis thaliana at 2.44 Å resolution.The New phytologist · 2026Article
- The MsZFP1-MsWRKY40-MsWRKY41 module efficiently regulates LHCII biogenesis via ABA-dependent manner in alfalfa.Science advances · 2026Article
- Cryo-EM structure of photosystem II supercomplex from a green microalga with extreme phototolerance.Nature communications · 2026Article
- Photosystem II: commonality and diversity with emphasis on the extrinsic subunits.Plant & cell physiology · 2025Review
- A stress-induced paralog of Lhcb4 controls the photosystem II functional architecture in Arabidopsis thaliana.Nature communications · 2025Article
- Lighting the way: Compelling open questions in photosynthesis research.The Plant cell · 2024Article
- Structural basis for an early stage of the photosystem II repair cycle in Chlamydomonas reinhardtii.Nature communications · 2024Article
- Structure of cryptophyte photosystem II-light-harvesting antennae supercomplex.Nature communications · 2024Article
- Structure of native photosystem II assembly intermediate fromFrontiers in plant science · 2023Article
- Photosystem II supercomplexes lacking light-harvesting antenna protein LHCB5 and their organization in the thylakoid membrane.Physiologia plantarumArticle
- Light-Harvesting Protein LHCB4 Is Important for Stable Dimeric Organization of Photosystem II.Physiologia plantarumArticle
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13 authors.
Funding
Abstract
The heart of oxygenic photosynthesis is the water-splitting photosystem II (PSII), which forms supercomplexes with a variable amount of peripheral trimeric light-harvesting complexes (LHCII). Our knowledge of the structure of green plant PSII supercomplex is based on findings obtained from several representatives of green algae and flowering plants; however, data from a non-flowering plant are currently missing. Here we report a cryo-electron microscopy structure of PSII supercomplex from spruce, a representative of non-flowering land plants, at 2.8 Å resolution. Compared with flowering plants, PSII supercomplex in spruce contains an additional Ycf12 subunit, Lhcb4 protein is replaced by Lhcb8, and trimeric LHCII is present as a homotrimer of Lhcb1. Unexpectedly, we have found α-tocopherol (α-Toc)/α-tocopherolquinone (α-TQ) at the boundary between the LHCII trimer and the inner antenna CP43. The molecule of α-Toc/α-TQ is located close to chlorophyll a614 of one of the Lhcb1 proteins and its chromanol/quinone head is exposed to the thylakoid lumen. The position of α-Toc in PSII supercomplex makes it an ideal candidate for the sensor of excessive light, as α-Toc can be oxidized to α-TQ by high-light-induced singlet oxygen at low lumenal pH. The molecule of α-TQ appears to shift slightly into the PSII supercomplex, which could trigger important structure-functional modifications in PSII supercomplex. Inspection of the previously reported cryo-electron microscopy maps of PSII supercomplexes indicates that α-Toc/α-TQ can be present at the same site also in PSII supercomplexes from flowering plants, but its identification in the previous studies has been hindered by insufficient resolution.
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