+Open data
-Basic information
Entry | Database: PDB / ID: 6ijj | |||||||||||||||||||||||||||||||||
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Title | Photosystem I of Chlamydomonas reinhardtii | |||||||||||||||||||||||||||||||||
Components |
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Keywords | MEMBRANE PROTEIN / Photosystem / Antenna / green alga | |||||||||||||||||||||||||||||||||
Function / homology | Function and homology information chloroplast thylakoid lumen / photosynthesis, light harvesting / photosynthesis, light harvesting in photosystem I / photosystem I reaction center / photosystem I / photosynthetic electron transport in photosystem I / photosystem I / photosystem II / chloroplast thylakoid membrane / chlorophyll binding ...chloroplast thylakoid lumen / photosynthesis, light harvesting / photosynthesis, light harvesting in photosystem I / photosystem I reaction center / photosystem I / photosynthetic electron transport in photosystem I / photosystem I / photosystem II / chloroplast thylakoid membrane / chlorophyll binding / response to light stimulus / membrane => GO:0016020 / photosynthesis / 4 iron, 4 sulfur cluster binding / electron transfer activity / oxidoreductase activity / magnesium ion binding / metal ion binding Similarity search - Function | |||||||||||||||||||||||||||||||||
Biological species | Chlamydomonas reinhardtii (plant) | |||||||||||||||||||||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.89 Å | |||||||||||||||||||||||||||||||||
Authors | Pan, X. / Ma, J. / Su, X. / Liu, Z. / Zhang, X. / Li, M. | |||||||||||||||||||||||||||||||||
Funding support | China, 10items
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Citation | Journal: Nat Plants / Year: 2019 Title: Antenna arrangement and energy transfer pathways of a green algal photosystem-I-LHCI supercomplex. Authors: Xiaodong Su / Jun Ma / Xiaowei Pan / Xuelin Zhao / Wenrui Chang / Zhenfeng Liu / Xinzheng Zhang / Mei Li / Abstract: During oxygenic photosynthesis, photosystems I and II (PSI and PSII) are essential for light-driven electron transport. Excitation energy transfer in PSI occurs extremely quickly, making it an ...During oxygenic photosynthesis, photosystems I and II (PSI and PSII) are essential for light-driven electron transport. Excitation energy transfer in PSI occurs extremely quickly, making it an efficient energy converter. In the alga Chlamydomonas reinhardtii (Cr), multiple units of light-harvesting complex I (LHCI) bind to the PSI core and function as peripheral antennae, forming a PSI-LHCI supercomplex. CrPSI-LHCI shows significantly larger antennae compared with plant PSI-LHCI while maintaining highly efficient energy transfer from LHCI to PSI. Here, we report structures of CrPSI-LHCI, solved by cryo-electron microscopy, revealing that up to ten LHCIs are associated with the PSI core. The structures provide detailed information about antenna organization and pigment arrangement within the supercomplexes. Highly populated and closely associated chlorophylls in the antennae explain the high efficiency of light harvesting and excitation energy transfer in CrPSI-LHCI. | |||||||||||||||||||||||||||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 6ijj.cif.gz | 1 MB | Display | PDBx/mmCIF format |
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PDB format | pdb6ijj.ent.gz | 912.4 KB | Display | PDB format |
PDBx/mmJSON format | 6ijj.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 6ijj_validation.pdf.gz | 15.6 MB | Display | wwPDB validaton report |
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Full document | 6ijj_full_validation.pdf.gz | 16.1 MB | Display | |
Data in XML | 6ijj_validation.xml.gz | 227.4 KB | Display | |
Data in CIF | 6ijj_validation.cif.gz | 274.7 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/ij/6ijj ftp://data.pdbj.org/pub/pdb/validation_reports/ij/6ijj | HTTPS FTP |
-Related structure data
Related structure data | 9678MC 9680C 6ijoC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
-Protein , 16 types, 17 molecules ABCDEFIKL1a345678
#1: Protein | Mass: 83239.203 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Chlamydomonas reinhardtii (plant) / References: UniProt: P12154*PLUS | ||||||||||||
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#2: Protein | Mass: 82184.266 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Chlamydomonas reinhardtii (plant) / References: UniProt: P09144*PLUS | ||||||||||||
#3: Protein | Mass: 8869.325 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Chlamydomonas reinhardtii (plant) / References: UniProt: Q00914*PLUS | ||||||||||||
#4: Protein | Mass: 21372.887 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Chlamydomonas reinhardtii (plant) / References: UniProt: Q39615*PLUS | ||||||||||||
#5: Protein | Mass: 16221.703 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Chlamydomonas reinhardtii (plant) / References: UniProt: P12352*PLUS | ||||||||||||
#6: Protein | Mass: 24088.936 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Chlamydomonas reinhardtii (plant) / References: UniProt: P12356*PLUS | ||||||||||||
#7: Protein | Mass: 10586.388 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Chlamydomonas reinhardtii (plant) / References: UniProt: A8IFG7*PLUS | ||||||||||||
#9: Protein | Mass: 16412.221 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Chlamydomonas reinhardtii (plant) / References: UniProt: P14225*PLUS | ||||||||||||
#10: Protein | Mass: 27203.562 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Chlamydomonas reinhardtii (plant) / References: UniProt: A8IL32*PLUS | ||||||||||||
#11: Protein | Mass: 26135.863 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Chlamydomonas reinhardtii (plant) / References: UniProt: Q05093*PLUS #12: Protein | | Mass: 32629.486 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Chlamydomonas reinhardtii (plant) / References: UniProt: A8JF10*PLUS #13: Protein | | Mass: 31462.010 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Chlamydomonas reinhardtii (plant) / References: UniProt: A8I000*PLUS #14: Protein | | Mass: 30151.650 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Chlamydomonas reinhardtii (plant) / References: UniProt: Q75VY8*PLUS #15: Protein | | Mass: 35122.043 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Chlamydomonas reinhardtii (plant) / References: UniProt: Q75VY6*PLUS #16: Protein | | Mass: 26248.869 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Chlamydomonas reinhardtii (plant) / References: UniProt: Q84Y02*PLUS #17: Protein | | Mass: 29178.635 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Chlamydomonas reinhardtii (plant) / References: UniProt: Q75VY7*PLUS |
-Protein/peptide , 1 types, 1 molecules J
#8: Protein/peptide | Mass: 4750.509 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Chlamydomonas reinhardtii (plant) / References: UniProt: P59777*PLUS |
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-Sugars , 2 types, 9 molecules
#23: Sugar | ChemComp-LMU / #25: Sugar | |
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-Non-polymers , 9 types, 290 molecules
#18: Chemical | ChemComp-CLA / #19: Chemical | #20: Chemical | ChemComp-LHG / #21: Chemical | ChemComp-BCR / #22: Chemical | #24: Chemical | ChemComp-LMG / #26: Chemical | ChemComp-LUT / ( #27: Chemical | ChemComp-XAT / ( #28: Chemical | |
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-Details
Has protein modification | Y |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component | Name: Chlamydomonas reinhardtii PSI with eight light harvesting antennae Type: COMPLEX / Entity ID: #1-#17 / Source: NATURAL |
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Source (natural) | Organism: Chlamydomonas reinhardtii (plant) |
Buffer solution | pH: 7.5 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
-Electron microscopy imaging
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 60 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
-Processing
Software | Name: PHENIX / Version: 1.12_2829: / Classification: refinement | ||||||||||||||||||||||||
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3D reconstruction | Resolution: 2.89 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 58955 / Symmetry type: POINT | ||||||||||||||||||||||||
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