› 7dr0

Electron Microscopy
3.3Å resolution

Structure of Wild-type PSI monomer1 from Cyanophora paradoxa

Released:
DOI: 10.2210/pdb7dr0/pdb
PDB entry 7dr0 coloured by chain, front view.
PDB entry 7dr0 coloured by chain, side view.
PDB entry 7dr0 coloured by chain, top view.
Source organism: Cyanophora paradoxa
Primary publication:
Structural insights into an evolutionary turning-point of photosystem I from prokaryotes to eukaryotes
Kato K, Nagao R, Ueno Y, Yokono M, Suzuki T, Jiang TY, Dohmae N, Akita F, Akimoto S, Miyazaki N, Shen JR
Biorxiv (2022)
Related structures: EMD-30820

Function and Biology Details

Reaction catalysed: 
Reduced plastocyanin + oxidized ferredoxin + light = oxidized plastocyanin + reduced ferredoxin
Biochemical function:
Biological process:
Cellular component:
Sequence domains:

Structure analysis Details

Assembly composition:
hetero undecamer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-151923 (preferred)
Entry contents:
11 distinct polypeptide molecules
Macromolecules (11 distinct):
Photosystem I P700 chlorophyll a apoprotein A1 Chain: A
Molecule details ›
Chain: A
Length: 752 amino acids
Theoretical weight: 83.4 KDa
Source organism: Cyanophora paradoxa
UniProt:
  • Canonical: P48112 (Residues: 1-752; Coverage: 100%)
Gene name: psaA
Sequence domains: Photosystem I psaA/psaB protein
Photosystem I P700 chlorophyll a apoprotein A2 Chain: B
Molecule details ›
Chain: B
Length: 737 amino acids
Theoretical weight: 82.32 KDa
Source organism: Cyanophora paradoxa
UniProt:
  • Canonical: P48113 (Residues: 1-737; Coverage: 100%)
Gene name: psaB
Sequence domains: Photosystem I psaA/psaB protein
Photosystem I iron-sulfur center Chain: C
Molecule details ›
Chain: C
Length: 81 amino acids
Theoretical weight: 8.85 KDa
Source organism: Cyanophora paradoxa
UniProt:
  • Canonical: P31173 (Residues: 1-81; Coverage: 100%)
Gene name: psaC
Sequence domains: 4Fe-4S dicluster domain
Photosystem I reaction center subunit II, cyanelle Chain: D
Molecule details ›
Chain: D
Length: 220 amino acids
Theoretical weight: 23.69 KDa
Source organism: Cyanophora paradoxa
UniProt:
  • Canonical: Q9T4W8 (Residues: 1-220; Coverage: 100%)
Gene name: psaD
Sequence domains: PsaD
Photosystem I reaction center subunit IV Chain: E
Molecule details ›
Chain: E
Length: 70 amino acids
Theoretical weight: 8.06 KDa
Source organism: Cyanophora paradoxa
UniProt:
  • Canonical: P48114 (Residues: 1-70; Coverage: 100%)
Gene name: psaE
Sequence domains: Photosystem I reaction centre subunit IV / PsaE
Photosystem I reaction center subunit III Chain: F
Molecule details ›
Chain: F
Length: 186 amino acids
Theoretical weight: 20.7 KDa
Source organism: Cyanophora paradoxa
UniProt:
  • Canonical: P48115 (Residues: 1-186; Coverage: 100%)
Gene name: psaF
Sequence domains: Photosystem I reaction centre subunit III
Photosystem I reaction center subunit VIII Chain: I
Molecule details ›
Chain: I
Length: 35 amino acids
Theoretical weight: 3.77 KDa
Source organism: Cyanophora paradoxa
UniProt:
  • Canonical: P48116 (Residues: 1-35; Coverage: 100%)
Gene name: psaI
Sequence domains: Photosystem I reaction centre subunit VIII
Photosystem I reaction center subunit IX Chain: J
Molecule details ›
Chain: J
Length: 40 amino acids
Theoretical weight: 4.48 KDa
Source organism: Cyanophora paradoxa
UniProt:
  • Canonical: P48117 (Residues: 1-40; Coverage: 100%)
Gene name: psaJ
Sequence domains: Photosystem I reaction centre subunit IX / PsaJ
Photosystem I reaction center subunit PsaK 1 Chain: K
Molecule details ›
Chain: K
Length: 157 amino acids
Theoretical weight: 15.7 KDa
Source organism: Cyanophora paradoxa
Photosystem I reaction center subunit XI Chain: L
Molecule details ›
Chain: L
Length: 146 amino acids
Theoretical weight: 15.38 KDa
Source organism: Cyanophora paradoxa
Photosystem I reaction center subunit XII Chain: M
Molecule details ›
Chain: M
Length: 31 amino acids
Theoretical weight: 3.33 KDa
Source organism: Cyanophora paradoxa
UniProt:
  • Canonical: P48185 (Residues: 1-31; Coverage: 100%)
Gene name: psaM
Sequence domains: Photosystem I protein M (PsaM)

Ligands and Environments

7 bound ligands:
Ligand CL0 1 x CL0
Ligand CLA 83 x CLA
Ligand PQN 2 x PQN
Ligand SF4 3 x SF4
Ligand BCR 19 x BCR
Ligand LHG 2 x LHG
Ligand LMG 1 x LMG
No modified residues

Experiments and Validation Details

Entry percentile scores
Resolution: 3.3Å
Relevant EMDB volumes: EMD-30820

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