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Open data
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Basic information
Entry | Database: PDB / ID: 6yac | |||||||||
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Title | Plant PSI-ferredoxin supercomplex | |||||||||
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![]() | PHOTOSYNTHESIS / Membrane complex / photosystem I / ferredoxin / light harvesting / excitation transfer | |||||||||
Function / homology | ![]() plastoglobule / 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 ...plastoglobule / 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 / chloroplast / 2 iron, 2 sulfur cluster binding / 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: 2.5 Å | |||||||||
![]() | Caspy, I. / Nelson, N. / Shkolnisky, Y. / Klaiman, D. / Sheinker, A. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: The structure of a triple complex of plant photosystem I with ferredoxin and plastocyanin. Authors: Ido Caspy / Anna Borovikova-Sheinker / Daniel Klaiman / Yoel Shkolnisky / Nathan Nelson / ![]() Abstract: The ability of photosynthetic organisms to use sunlight as a sole source of energy is endowed by two large membrane complexes-photosystem I (PSI) and photosystem II (PSII). PSI and PSII are the ...The ability of photosynthetic organisms to use sunlight as a sole source of energy is endowed by two large membrane complexes-photosystem I (PSI) and photosystem II (PSII). PSI and PSII are the fundamental components of oxygenic photosynthesis, providing oxygen, food and an energy source for most living organisms on Earth. Currently, high-resolution crystal structures of these complexes from various organisms are available. The crystal structures of megadalton complexes have revealed excitation transfer and electron-transport pathways within the various complexes. PSI is defined as plastocyanin-ferredoxin oxidoreductase but a high-resolution structure of the entire triple supercomplex is not available. Here, using a new cryo-electron microscopy technique, we solve the structure of native plant PSI in complex with its electron donor plastocyanin and the electron acceptor ferredoxin. We reveal all of the contact sites and the modes of interaction between the interacting electron carriers and PSI. | |||||||||
History |
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 887.3 KB | Display | ![]() |
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PDB format | ![]() | 787 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 13.3 MB | Display | ![]() |
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Full document | ![]() | 14 MB | Display | |
Data in XML | ![]() | 237.2 KB | Display | |
Data in CIF | ![]() | 287.7 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 10746MC ![]() 6yezC M: map data used to model this data C: citing same article ( |
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Similar structure data |
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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: 82571.484 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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#2: Protein | Mass: 82381.734 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-Protein , 10 types, 10 molecules CDEFGHL12N
#3: Protein | Mass: 8860.276 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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#4: Protein | Mass: 16041.408 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#5: Protein | Mass: 7479.422 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#6: Protein | Mass: 17137.857 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#7: Protein | Mass: 10678.027 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#8: Protein | Mass: 9491.742 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#12: Protein | Mass: 16564.977 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#13: Protein | Mass: 21335.439 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#14: Protein | Mass: 22845.812 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#17: Protein | Mass: 10359.312 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-Photosystem I reaction center subunit ... , 3 types, 3 molecules IJK
#9: Protein/peptide | Mass: 3409.198 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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#10: Protein/peptide | Mass: 4767.609 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#11: Protein | Mass: 8135.471 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-Chlorophyll a-b binding protein ... , 2 types, 2 molecules 34
#15: Protein | Mass: 24139.521 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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#16: Protein | Mass: 21994.029 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-Sugars , 2 types, 14 molecules ![](data/chem/img/LMT.gif)
![](data/chem/img/DGD.gif)
![](data/chem/img/DGD.gif)
#24: Sugar | ChemComp-LMT / #27: Sugar | ChemComp-DGD / |
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-Non-polymers , 14 types, 285 molecules ![](data/chem/img/CL0.gif)
![](data/chem/img/CLA.gif)
![](data/chem/img/PQN.gif)
![](data/chem/img/SF4.gif)
![](data/chem/img/BCR.gif)
![](data/chem/img/LHG.gif)
![](data/chem/img/LMG.gif)
![](data/chem/img/CA.gif)
![](data/chem/img/LUT.gif)
![](data/chem/img/CHL.gif)
![](data/chem/img/XAT.gif)
![](data/chem/img/C7Z.gif)
![](data/chem/img/FES.gif)
![](data/chem/img/HOH.gif)
![](data/chem/img/CLA.gif)
![](data/chem/img/PQN.gif)
![](data/chem/img/SF4.gif)
![](data/chem/img/BCR.gif)
![](data/chem/img/LHG.gif)
![](data/chem/img/LMG.gif)
![](data/chem/img/CA.gif)
![](data/chem/img/LUT.gif)
![](data/chem/img/CHL.gif)
![](data/chem/img/XAT.gif)
![](data/chem/img/C7Z.gif)
![](data/chem/img/FES.gif)
![](data/chem/img/HOH.gif)
#18: Chemical | ChemComp-CL0 / | ||||||||||||||||||||||||
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#19: Chemical | ChemComp-CLA / #20: Chemical | #21: Chemical | #22: Chemical | ChemComp-BCR / #23: Chemical | ChemComp-LHG / #25: Chemical | ChemComp-LMG / #26: Chemical | #28: Chemical | ChemComp-LUT / ( #29: Chemical | ChemComp-CHL / #30: Chemical | #31: Chemical | ChemComp-C7Z / ( | #32: Chemical | ChemComp-FES / | #33: Water | ChemComp-HOH / | |
-Details
Has ligand of interest | N |
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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 |
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Sample preparation
Component | Name: Pea Photosystem I in complex with Ferredoxin / Type: COMPLEX / Entity ID: #1-#17 / Source: NATURAL |
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Molecular weight | Value: 0.66 MDa / Experimental value: NO |
Source (natural) | Organism: ![]() ![]() |
Buffer solution | pH: 8 |
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 / Nominal defocus max: 3000 nm / Nominal defocus min: 900 nm |
Specimen holder | Cryogen: NITROGEN |
Image recording | Electron dose: 1.075 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 3669 |
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Processing
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EM software |
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CTF correction | Type: NONE | ||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 1776870 | ||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 2.5 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 269657 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: AB INITIO MODEL / Space: REAL | ||||||||||||||||||||||||||||||||||||
Atomic model building |
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Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 48.74 Å2 | ||||||||||||||||||||||||||||||||||||
Refine LS restraints |
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