ArticleNature communications2024
Structure and distinct supramolecular organization of a PSII-ACPII dimer from a cryptophyte alga Chroomonas placoidea.
Article in Nature communications, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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12 citing papers in PubMed.
- Chirality distribution in the fifth ligand coordination of chlorophylls-c in photosynthetic pigment-protein complexes.Photosynthesis research · 2026Article
- pH-Dependent Vibrational Dynamics Drives Excited-State Quenching in the Phycobiliprotein Complex PC645.Journal of the American Chemical Society · 2026Article
- Structural interactions of TLP18.3 and Psb27-H1 to the luminal CP43 and rubredoxin-ENH1 to the stromal side of photosystem II in higher plants.The Journal of biological chemistry · 2026Article
- Cryo-EM structure of photosystem II supercomplex from a green microalga with extreme phototolerance.Nature communications · 2026Article
- Structural insights into a PSI-ACPI supercomplex from a cryptophyte alga Chroomonas placoidea.Photosynthesis research · 2025Article
- Architecture and energy transfer of coccolithophore photosystem I with a huge light-harvesting antenna system.Science advances · 2025Article
- Photosystem II: commonality and diversity with emphasis on the extrinsic subunits.Plant & cell physiology · 2025Review
- Structure of a photosystem II-FCPII supercomplex from a haptophyte reveals a distinct antenna organization.Nature communications · 2025Article
- Structural analysis of PSI-ACPI and PSII-ACPII supercomplexes from a cryptophyte algaFrontiers in plant science · 2025Article
- Structural insights into the assembly and energy transfer of haptophyte photosystem I-light-harvesting supercomplex.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Elucidating the Role ofInternational journal of molecular sciences · 2024Article
- Structural basis for the distinct core-antenna assembly of cryptophyte photosystem II.Nature communications · 2024Article
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10 authors.
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Abstract
Cryptophyte algae are an evolutionarily distinct and ecologically important group of photosynthetic unicellular eukaryotes. Photosystem II (PSII) of cryptophyte algae associates with alloxanthin chlorophyll a/c-binding proteins (ACPs) to act as the peripheral light-harvesting system, whose supramolecular organization is unknown. Here, we purify the PSII-ACPII supercomplex from a cryptophyte alga Chroomonas placoidea (C. placoidea), and analyze its structure at a resolution of 2.47 Å using cryo-electron microscopy. This structure reveals a dimeric organization of PSII-ACPII containing two PSII core monomers flanked by six symmetrically arranged ACPII subunits. The PSII core is conserved whereas the organization of ACPII subunits exhibits a distinct pattern, different from those observed so far in PSII of other algae and higher plants. Furthermore, we find a Chl a-binding antenna subunit, CCPII-S, which mediates interaction of ACPII with the PSII core. These results provide a structural basis for the assembly of antennas within the supercomplex and possible excitation energy transfer pathways in cryptophyte algal PSII, shedding light on the diversity of supramolecular organization of photosynthetic machinery.
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