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- PDB-6jo5: Structure of the green algal photosystem I supercomplex with ligh... -
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Open data
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Basic information
Entry | Database: PDB / ID: 6jo5 | ||||||||||||
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Title | Structure of the green algal photosystem I supercomplex with light-harvesting complex I | ||||||||||||
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![]() | PHOTOSYNTHESIS / photosystem membrane protein | ||||||||||||
Function / homology | ![]() photosynthesis, light harvesting / chloroplast thylakoid lumen / photosynthesis, light harvesting in photosystem I / photosystem I reaction center / photosystem I / photosystem I / photosystem II / chlorophyll binding / photosynthetic electron transport in photosystem I / chloroplast thylakoid membrane ...photosynthesis, light harvesting / chloroplast thylakoid lumen / photosynthesis, light harvesting in photosystem I / photosystem I reaction center / photosystem I / photosystem I / photosystem II / chlorophyll binding / photosynthetic electron transport in photosystem I / chloroplast thylakoid membrane / response to light stimulus / photosynthesis / 4 iron, 4 sulfur cluster binding / oxidoreductase activity / electron transfer activity / magnesium ion binding / metal ion binding Similarity search - Function | ||||||||||||
Biological species | ![]() ![]() | ||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.9 Å | ||||||||||||
![]() | Suga, M. / Miyazaki, N. / Takahashi, Y. | ||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Structure of the green algal photosystem I supercomplex with a decameric light-harvesting complex I. Authors: Michihiro Suga / Shin-Ichiro Ozawa / Kaori Yoshida-Motomura / Fusamichi Akita / Naoyuki Miyazaki / Yuichiro Takahashi / ![]() Abstract: In plants and green algae, the core of photosystem I (PSI) is surrounded by a peripheral antenna system consisting of light-harvesting complex I (LHCI). Here we report the cryo-electron ...In plants and green algae, the core of photosystem I (PSI) is surrounded by a peripheral antenna system consisting of light-harvesting complex I (LHCI). Here we report the cryo-electron microscopic structure of the PSI-LHCI supercomplex from the green alga Chlamydomonas reinhardtii. The structure reveals that eight Lhca proteins form two tetrameric LHCI belts attached to the PsaF side while the other two Lhca proteins form an additional Lhca2/Lhca9 heterodimer attached to the opposite side. The spatial arrangement of light-harvesting pigments reveals that Chlorophylls b are more abundant in the outer LHCI belt than in the inner LHCI belt and are absent from the core, thereby providing the downhill energy transfer pathways to the PSI core. PSI-LHCI is complexed with a plastocyanin on the patch of lysine residues of PsaF at the luminal side. The assembly provides a structural basis for understanding the mechanism of light-harvesting, excitation energy transfer of the PSI-LHCI supercomplex and electron transfer with plastocyanin. | ||||||||||||
History |
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Structure visualization
Movie |
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 1.1 MB | Display | ![]() |
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PDB format | ![]() | 1003.3 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 14.5 MB | Display | ![]() |
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Full document | ![]() | 15.8 MB | Display | |
Data in XML | ![]() | 304.1 KB | Display | |
Data in CIF | ![]() | 360.4 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 9853MC ![]() 9854C ![]() 9855C ![]() 9856C ![]() 6jo6C M: map data used to model this data C: citing same article ( |
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Similar structure data | |
EM raw data | ![]() Data size: 8.0 TB Data #1: Raw multiframe micrographs [micrographs - multiframe]) |
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Links
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Assembly
Deposited unit | ![]()
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1 |
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Components
-Photosystem I P700 chlorophyll a apoprotein ... , 2 types, 2 molecules AB
#1: Protein | Mass: 83239.203 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
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#2: Protein | Mass: 84947.195 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
-Photosystem I reaction center subunit ... , 8 types, 8 molecules DEFGIJKL
#4: Protein | Mass: 17732.496 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
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#5: Protein | Mass: 8135.226 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
#6: Protein | Mass: 17957.773 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
#7: Protein | Mass: 9828.936 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
#8: Protein | Mass: 10586.388 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
#9: Protein/peptide | Mass: 4750.509 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
#10: Protein | Mass: 8431.764 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
#11: Protein | Mass: 16120.512 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
-Chlorophyll a-b binding protein, ... , 9 types, 10 molecules 1Z37845629
#12: Protein | Mass: 20368.023 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() #13: Protein | | Mass: 29435.598 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() #14: Protein | | Mass: 23446.553 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() #15: Protein | | Mass: 23293.613 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() #16: Protein | | Mass: 25906.434 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() #17: Protein | | Mass: 25264.959 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() #18: Protein | | Mass: 25183.152 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() #19: Protein | | Mass: 24333.062 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() #20: Protein | | Mass: 20374.262 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
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-Protein / Sugars , 2 types, 2 molecules C![](data/chem/img/DGD.gif)
![](data/chem/img/DGD.gif)
#27: Sugar | ChemComp-DGD / |
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#3: Protein | Mass: 8869.325 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
-Non-polymers , 9 types, 312 molecules ![](data/chem/img/CL0.gif)
![](data/chem/img/CLA.gif)
![](data/chem/img/PQN.gif)
![](data/chem/img/LHG.gif)
![](data/chem/img/BCR.gif)
![](data/chem/img/SF4.gif)
![](data/chem/img/LMG.gif)
![](data/chem/img/CHL.gif)
![](data/chem/img/LUT.gif)
![](data/chem/img/CLA.gif)
![](data/chem/img/PQN.gif)
![](data/chem/img/LHG.gif)
![](data/chem/img/BCR.gif)
![](data/chem/img/SF4.gif)
![](data/chem/img/LMG.gif)
![](data/chem/img/CHL.gif)
![](data/chem/img/LUT.gif)
#21: Chemical | ChemComp-CL0 / | ||||||||||||||
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#22: Chemical | ChemComp-CLA / #23: Chemical | #24: Chemical | ChemComp-LHG / #25: Chemical | ChemComp-BCR / #26: Chemical | #28: Chemical | #29: Chemical | ChemComp-CHL / #30: Chemical | ChemComp-LUT / ( |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: Photosystem I - Light Harvesting Complex I supercomplex Type: COMPLEX / Entity ID: #1-#20 / Source: NATURAL |
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Molecular weight | Experimental value: NO |
Source (natural) | Organism: ![]() ![]() |
Source (recombinant) | Organism: ![]() ![]() |
Buffer solution | pH: 7.5 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
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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: ![]() |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 50 e/Å2 / Film or detector model: FEI FALCON III (4k x 4k) |
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Processing
Software | Name: PHENIX / Version: 1.13_2998: / Classification: refinement |
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CTF correction | Type: NONE |
3D reconstruction | Resolution: 2.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 338867 / Symmetry type: POINT |