Complex: Triple complex of photosystem I bound to ferredoxin and plastocyanin
Protein or peptide: x 14 types
Protein or peptide: x 4 types
Ligand: x 18 types
Function / homology
Function and homology information
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 / copper ion binding / magnesium ion binding / metal ion binding Similarity search - Function
Photosystem I PsaH, reaction centre subunit VI / Photosystem I reaction centre subunit VI / 4Fe-4S dicluster domain / Plastocyanin / Photosystem I reaction center subunit psaK, plant / Photosystem I reaction center subunit V/PsaK, plant / Photosystem I PsaG/PsaK domain, chloroplastic / Ferredoxin [2Fe-2S], plant / Photosystem I reaction centre subunit PsaK superfamily / Blue (type 1) copper protein, plastocyanin-type ...Photosystem I PsaH, reaction centre subunit VI / Photosystem I reaction centre subunit VI / 4Fe-4S dicluster domain / Plastocyanin / Photosystem I reaction center subunit psaK, plant / Photosystem I reaction center subunit V/PsaK, plant / Photosystem I PsaG/PsaK domain, chloroplastic / Ferredoxin [2Fe-2S], plant / Photosystem I reaction centre subunit PsaK superfamily / Blue (type 1) copper protein, plastocyanin-type / Photosystem I reaction center subunit V/PsaK / Photosystem I psaG / psaK / Photosystem I PsaL, reaction centre subunit XI / Photosystem I, reaction centre subunit XI / Photosystem I PsaL, reaction centre subunit XI superfamily / Photosystem I reaction centre subunit XI / Photosystem I reaction centre subunit VIII / Photosystem I reaction centre subunit VIII / Photosystem I reaction centre subunit VIII superfamily / Photosystem I PsaF, reaction centre subunit III / Photosystem I PsaF, reaction centre subunit III superfamily / Photosystem I reaction centre subunit III / Chlorophyll A-B binding protein, plant and chromista / Photosystem I PsaD / Chlorophyll A-B binding protein / Photosystem I, reaction centre subunit PsaD superfamily / Chlorophyll A-B binding protein / PsaD / Photosystem I PsaJ, reaction centre subunit IX / Photosystem I PsaJ, reaction centre subunit IX superfamily / Photosystem I reaction centre subunit IX / PsaJ / Photosystem I PsaE, reaction centre subunit IV / Photosystem I reaction centre subunit IV / PsaE / Photosystem I protein PsaC / Photosystem I PsaA / Photosystem I PsaB / Photosystem I PsaA/PsaB, conserved site / Photosystem I psaA and psaB proteins signature. / Photosystem I PsaA/PsaB / Photosystem I PsaA/PsaB superfamily / Photosystem I psaA/psaB protein / Electron transport accessory-like domain superfamily / 2Fe-2S ferredoxin, iron-sulphur binding site / 2Fe-2S ferredoxin-type iron-sulfur binding region signature. / Blue (type 1) copper domain / Copper binding proteins, plastocyanin/azurin family / Blue (type 1) copper protein, binding site / Type-1 copper (blue) proteins signature. / 2Fe-2S iron-sulfur cluster binding domain / Beta-grasp domain superfamily / 2Fe-2S ferredoxin-type iron-sulfur binding domain profile. / 2Fe-2S ferredoxin-type iron-sulfur binding domain / 2Fe-2S ferredoxin-like superfamily / 4Fe-4S ferredoxin, iron-sulphur binding, conserved site / 4Fe-4S ferredoxin-type iron-sulfur binding region signature. / 4Fe-4S ferredoxin-type iron-sulfur binding domain profile. / 4Fe-4S ferredoxin-type, iron-sulphur binding domain / Cupredoxin Similarity search - Domain/homology
Photosystem I P700 chlorophyll a apoprotein A1 / Photosystem I P700 chlorophyll a apoprotein A2 / Photosystem I reaction center subunit VI / Photosystem I reaction center subunit III / Photosystem I reaction center subunit IX / Photosystem I reaction center subunit IV / Photosystem I reaction center subunit II, chloroplastic / PSI subunit V / PSI-K / Ferredoxin-1, chloroplastic ...Photosystem I P700 chlorophyll a apoprotein A1 / Photosystem I P700 chlorophyll a apoprotein A2 / Photosystem I reaction center subunit VI / Photosystem I reaction center subunit III / Photosystem I reaction center subunit IX / Photosystem I reaction center subunit IV / Photosystem I reaction center subunit II, chloroplastic / PSI subunit V / PSI-K / Ferredoxin-1, chloroplastic / Photosystem I iron-sulfur center / Plastocyanin, chloroplastic / Photosystem I reaction center subunit VIII / Chlorophyll a-b binding protein 3, chloroplastic / Chlorophyll a-b binding protein, chloroplastic / Chlorophyll a-b binding protein P4, chloroplastic Similarity search - Component
Biological species
Pisum sativum (garden pea) / Garden pea (garden pea) / Pea (garden pea)
Method
single particle reconstruction / cryo EM / Resolution: 2.7 Å
German-Israeli Foundation for Research and Development
1483
Israel
Citation
Journal: Nat Plants / Year: 2020 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
Deposition
Mar 25, 2020
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Header (metadata) release
Sep 30, 2020
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Map release
Sep 30, 2020
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Update
Jul 7, 2021
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Current status
Jul 7, 2021
Processing site: PDBe / Status: Released
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Structure visualization
Movie
Surface view with section colored by density value
Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Number real images: 11622 / Average exposure time: 1.4 sec. / Average electron dose: 47.05 e/Å2
Electron beam
Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
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