› 6tra

Electron Microscopy
2.85Å resolution

Cryo- EM structure of the Thermosynechococcus elongatus photosystem I in the presence of cytochrome c6

Released:
DOI: 10.2210/pdb6tra/pdb
PDB entry 6tra coloured by chain, front view.
PDB entry 6tra coloured by chain, side view.
PDB entry 6tra coloured by chain, top view.
Source organism: Thermosynechococcus vestitus BP-1
Primary publication:
Current limits of structural biology: The transient interaction between cytochrome c6 and photosystem I
Koelsch A, Radon C, Golub M, Baumert A, Burger J, Miehlke T, Lisdat F, Feoktystov A, Pieper J, Zouni A, Wendler P
Curr. Opin. Struct. Biol. 2 171-179 (2020)
Related structures: EMD-10557

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 dodecamer (preferred)
PDBe Complex ID:
PDB-CPX-141237 (preferred)
Entry contents:
12 distinct polypeptide molecules
Macromolecules (12 distinct):
Photosystem I P700 chlorophyll a apoprotein A1 Chain: A
Molecule details ›
Chain: A
Length: 755 amino acids
Theoretical weight: 83.27 KDa
Source organism: Thermosynechococcus vestitus BP-1
UniProt:
  • Canonical: P0A405 (Residues: 1-755; Coverage: 100%)
Gene names: psaA, tlr0731
Sequence domains: Photosystem I psaA/psaB protein
Photosystem I P700 chlorophyll a apoprotein A2 Chain: B
Molecule details ›
Chain: B
Length: 741 amino acids
Theoretical weight: 83.12 KDa
Source organism: Thermosynechococcus vestitus BP-1
UniProt:
  • Canonical: P0A407 (Residues: 1-741; Coverage: 100%)
Gene names: psaB, tlr0732
Sequence domains: Photosystem I psaA/psaB protein
Photosystem I iron-sulfur center Chain: C
Molecule details ›
Chain: C
Length: 81 amino acids
Theoretical weight: 8.81 KDa
Source organism: Thermosynechococcus vestitus BP-1
UniProt:
  • Canonical: P0A415 (Residues: 1-81; Coverage: 100%)
Gene names: psaC, tsl1013
Sequence domains: 4Fe-4S dicluster domain
Photosystem I reaction center subunit II Chain: D
Molecule details ›
Chain: D
Length: 139 amino acids
Theoretical weight: 15.39 KDa
Source organism: Thermosynechococcus vestitus BP-1
UniProt:
  • Canonical: P0A420 (Residues: 1-139; Coverage: 100%)
Gene names: psaD, tll1724
Sequence domains: PsaD
Photosystem I reaction center subunit IV Chain: E
Molecule details ›
Chain: E
Length: 76 amino acids
Theoretical weight: 8.4 KDa
Source organism: Thermosynechococcus vestitus BP-1
UniProt:
  • Canonical: P0A423 (Residues: 1-76; Coverage: 100%)
Gene names: psaE, tsl1567
Sequence domains: Photosystem I reaction centre subunit IV / PsaE
Photosystem I reaction center subunit III Chain: F
Molecule details ›
Chain: F
Length: 141 amino acids
Theoretical weight: 15.13 KDa
Source organism: Thermosynechococcus vestitus BP-1
UniProt:
  • Canonical: P0A401 (Residues: 24-164; Coverage: 100%)
Gene names: psaF, tlr2411
Sequence domains: Photosystem I reaction centre subunit III
Photosystem I reaction center subunit VIII Chain: I
Molecule details ›
Chain: I
Length: 38 amino acids
Theoretical weight: 4.33 KDa
Source organism: Thermosynechococcus vestitus BP-1
UniProt:
  • Canonical: P0A427 (Residues: 1-38; Coverage: 100%)
Gene names: psaI, tsr2405
Sequence domains: Photosystem I reaction centre subunit VIII
Photosystem I reaction center subunit IX Chain: J
Molecule details ›
Chain: J
Length: 41 amino acids
Theoretical weight: 4.8 KDa
Source organism: Thermosynechococcus vestitus BP-1
UniProt:
  • Canonical: P0A429 (Residues: 1-41; Coverage: 100%)
Gene names: psaJ, tsr2412
Sequence domains: Photosystem I reaction centre subunit IX / PsaJ
Photosystem I reaction center subunit PsaK Chain: K
Molecule details ›
Chain: K
Length: 83 amino acids
Theoretical weight: 8.48 KDa
Source organism: Thermosynechococcus vestitus BP-1
UniProt:
  • Canonical: P0A425 (Residues: 1-83; Coverage: 100%)
Gene names: psaK, tsr2273
Sequence domains: Photosystem I psaG / psaK
Photosystem I reaction center subunit XI Chain: L
Molecule details ›
Chain: L
Length: 155 amino acids
Theoretical weight: 16.29 KDa
Source organism: Thermosynechococcus vestitus BP-1
UniProt:
  • Canonical: Q8DGB4 (Residues: 1-155; Coverage: 100%)
Gene names: psaL, tlr2404
Sequence domains: Photosystem I reaction centre subunit XI
Photosystem I reaction center subunit XII Chain: M
Molecule details ›
Chain: M
Length: 31 amino acids
Theoretical weight: 3.43 KDa
Source organism: Thermosynechococcus vestitus BP-1
UniProt:
  • Canonical: P0A403 (Residues: 1-31; Coverage: 100%)
Gene names: psaM, tsr0197
Sequence domains: Photosystem I protein M (PsaM)
Photosystem I 4.8K protein Chain: X
Molecule details ›
Chain: X
Length: 36 amino acids
Theoretical weight: 4.1 KDa
Source organism: Thermosynechococcus vestitus BP-1
UniProt:
  • Canonical: Q8DKP6 (Residues: 4-39; Coverage: 92%)
Gene name: tsr0813
Sequence domains: PsaX family

Ligands and Environments

8 bound ligands:
Ligand CL0 1 x CL0
Ligand CLA 96 x CLA
Ligand PQN 2 x PQN
Ligand BCR 24 x BCR
Ligand LHG 5 x LHG
Ligand SF4 3 x SF4
Ligand CA 2 x CA
Ligand LMG 1 x LMG
1 modified residue:
Ligand FME 2 x FME

Experiments and Validation Details

Entry percentile scores
Resolution: 2.85Å
Relevant EMDB volumes: EMD-10557

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