ArticleThe New phytologist2017
Conservation of core complex subunits shaped the structure and function of photosystem I in the secondary endosymbiont alga Nannochloropsis gaditana.
Article in The New phytologist, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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18 citing papers in PubMed, 38 citations in OpenAlex.
- Thylakoids reorganization enables driving photosynthesis under far-red light in the microalga Nannochloropsis gaditana.The New phytologist · 2026Article
- Thriving across seawater depths: How blue light shapes a large PSI supercomplex and specific photosynthetic traits in the seagrass Posidonia oceanica.Plant communications · 2026Article
- Eustigmatophyte model of red-shifted chlorophyll a absorption in light-harvesting complexes.Communications biology · 2024Article
- Modulation of xanthophyll cycle impacts biomass productivity in the marine microalgaProceedings of the National Academy of Sciences of the United States of America · 2023Article
- Role of serine/threonine protein kinase STN7 in the formation of two distinct photosystem I supercomplexes in Physcomitrium patens.Plant physiology · 2022Article
- Role of an ancient light-harvesting protein of PSI in light absorption and photoprotection.Nature communications · 2021Article
- Development of New Antiproliferative Compound against Human Tumor Cells from the Marine MicroalgaeInternational journal of molecular sciences · 2020Article
- PSI of the Colonial AlgaPlant physiology · 2020Article
- Characterization of a Giant PSI Supercomplex in the Symbiotic Dinoflagellate Symbiodiniaceae.Plant physiology · 2020Article
- Composition, phosphorylation and dynamic organization of photosynthetic protein complexes in plant thylakoid membrane.Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology · 2020Review
- Physiological and evolutionary implications of tetrameric photosystem I in cyanobacteria.Nature plants · 2019Article
- Red-shifted light-harvesting system of freshwater eukaryotic alga Trachydiscus minutus (Eustigmatophyta, Stramenopila).Photosynthesis research · 2019Article
- Structure and function of photosystem I in Cyanidioschyzon merolae.Photosynthesis research · 2019Article
- Unique photosynthetic electron transport tuning and excitation distribution in heterokont algae.PloS one · 2019Article
- Advanced genetic tools enable synthetic biology in the oleaginous microalgae Nannochloropsis sp.Plant cell reports · 2018Review
- Unique organization of photosystem I-light-harvesting supercomplex revealed by cryo-EM from a red alga.Proceedings of the National Academy of Sciences of the United States of America · 2018Article
- Evidence of the supercomplex organization of photosystem II and light-harvesting complexes in Nannochloropsis granulata.Photosynthesis research · 2018Article
- Extensive gain and loss of photosystem I subunits in chromerid algae, photosynthetic relatives of apicomplexans.Scientific reports · 2017Article
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Authors and funding
11 authors at 4 institutions in 3 countries.
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Abstract
Photosystem I (PSI) is a pigment protein complex catalyzing the light-driven electron transport from plastocyanin to ferredoxin in oxygenic photosynthetic organisms. Several PSI subunits are highly conserved in cyanobacteria, algae and plants, whereas others are distributed differentially in the various organisms. Here we characterized the structural and functional properties of PSI purified from the heterokont alga Nannochloropsis gaditana, showing that it is organized as a supercomplex including a core complex and an outer antenna, as in plants and other eukaryotic algae. Differently from all known organisms, the N. gaditana PSI supercomplex contains five peripheral antenna proteins, identified by proteome analysis as type-R light-harvesting complexes (LHCr4-8). Two antenna subunits are bound in a conserved position, as in PSI in plants, whereas three additional antennae are associated with the core on the other side. This peculiar antenna association correlates with the presence of PsaF/J and the absence of PsaH, G and K in the N. gaditana genome and proteome. Excitation energy transfer in the supercomplex is highly efficient, leading to a very high trapping efficiency as observed in all other PSI eukaryotes, showing that although the supramolecular organization of PSI changed during evolution, fundamental functional properties such as trapping efficiency were maintained.
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