6YAC image
Entry Detail
PDB ID:
6YAC
EMDB ID:
Keywords:
Title:
Plant PSI-ferredoxin supercomplex
Biological Source:
Source Organism:
PDB Version:
Deposition Date:
2020-03-12
Release Date:
2020-09-30
Method Details:
Experimental Method:
Resolution:
2.50 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Lhca1
Chain IDs:M (auth: 1)
Chain Length:193
Number of Molecules:1
Biological Source:Pisum sativum
Polymer Type:polypeptide(L)
Description:Chlorophyll a-b binding protein, chloroplastic
Chain IDs:N (auth: 2)
Chain Length:208
Number of Molecules:1
Biological Source:Pisum sativum
Polymer Type:polypeptide(L)
Description:Chlorophyll a-b binding protein 3, chloroplastic
Chain IDs:O (auth: 3)
Chain Length:221
Number of Molecules:1
Biological Source:Pisum sativum
Polymer Type:polypeptide(L)
Description:Chlorophyll a-b binding protein P4, chloroplastic
Chain IDs:P (auth: 4)
Chain Length:198
Number of Molecules:1
Biological Source:Pisum sativum
Polymer Type:polypeptide(L)
Description:Photosystem I P700 chlorophyll a apoprotein A1
Chain IDs:A
Chain Length:743
Number of Molecules:1
Biological Source:Pisum sativum
Polymer Type:polypeptide(L)
Description:Photosystem I P700 chlorophyll a apoprotein A2
Chain IDs:B
Chain Length:733
Number of Molecules:1
Biological Source:Pisum sativum
Polymer Type:polypeptide(L)
Description:Photosystem I iron-sulfur center
Chain IDs:C
Chain Length:80
Number of Molecules:1
Biological Source:Pisum sativum
Polymer Type:polypeptide(L)
Description:PsaD
Chain IDs:D
Chain Length:143
Number of Molecules:1
Biological Source:Pisum sativum
Polymer Type:polypeptide(L)
Description:PsaE
Chain IDs:E
Chain Length:66
Number of Molecules:1
Biological Source:Pisum sativum
Polymer Type:polypeptide(L)
Description:PsaF
Chain IDs:F
Chain Length:154
Number of Molecules:1
Biological Source:Pisum sativum
Polymer Type:polypeptide(L)
Description:PsaG
Chain IDs:G
Chain Length:97
Number of Molecules:1
Biological Source:Pisum sativum
Polymer Type:polypeptide(L)
Description:PsaH
Chain IDs:H
Chain Length:88
Number of Molecules:1
Biological Source:Pisum sativum
Polymer Type:polypeptide(L)
Description:Photosystem I reaction center subunit VIII
Chain IDs:I
Chain Length:31
Number of Molecules:1
Biological Source:Pisum sativum
Polymer Type:polypeptide(L)
Description:Photosystem I reaction center subunit IX
Chain IDs:J
Chain Length:42
Number of Molecules:1
Biological Source:Pisum sativum
Polymer Type:polypeptide(L)
Description:Photosystem I reaction center subunit X psaK
Chain IDs:K
Chain Length:81
Number of Molecules:1
Biological Source:Pisum sativum
Polymer Type:polypeptide(L)
Description:PsaL
Chain IDs:L
Chain Length:157
Number of Molecules:1
Biological Source:Pisum sativum
Polymer Type:polypeptide(L)
Description:Ferredoxin-1, chloroplastic
Chain IDs:Q (auth: N)
Chain Length:97
Number of Molecules:1
Biological Source:Pisum sativum
Primary Citation
The structure of a triple complex of plant photosystem I with ferredoxin and plastocyanin.
Nat.Plants 6 1300 1305 (2020)
PMID: 33020607 DOI: 10.1038/s41477-020-00779-9

Abstact

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.

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Primary Citation of related structures