› 1jb0

X-ray diffraction
2.5Å resolution

Crystal Structure of Photosystem I: a Photosynthetic Reaction Center and Core Antenna System from Cyanobacteria

Released:
DOI: 10.2210/pdb1jb0/pdb
PDB entry 1jb0 coloured by chain, front view.
PDB entry 1jb0 coloured by chain, side view.
PDB entry 1jb0 coloured by chain, top view.
Source organism: Synechococcus elongatus
Primary publication:
Three-dimensional structure of cyanobacterial photosystem I at 2.5 A resolution.
Jordan P, Fromme P, Witt HT, Klukas O, Saenger W, Krauss N
Nature 411 909-17 (2001)
PMID: 11418848

Function and Biology Details

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

Structure analysis Details

Assembly composition:
hetero 36-mer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-141240 (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: Synechococcus elongatus
UniProt:
  • Canonical: P0A405 (Residues: 1-755; Coverage: 100%)
Gene names: psaA, tlr0731
Sequence domains: Photosystem I psaA/psaB protein
Structure domains: Photosystem I PsaA/PsaB
Photosystem I P700 chlorophyll a apoprotein A2 Chain: B
Molecule details ›
Chain: B
Length: 740 amino acids
Theoretical weight: 82.99 KDa
Source organism: Synechococcus elongatus
UniProt:
  • Canonical: P0A407 (Residues: 2-741; Coverage: 100%)
Gene names: psaB, tlr0732
Sequence domains: Photosystem I psaA/psaB protein
Structure domains: Photosystem I PsaA/PsaB
Photosystem I iron-sulfur center Chain: C
Molecule details ›
Chain: C
Length: 80 amino acids
Theoretical weight: 8.68 KDa
Source organism: Synechococcus elongatus
UniProt:
  • Canonical: P0A415 (Residues: 2-81; Coverage: 99%)
Gene names: psaC, tsl1013
Sequence domains: 4Fe-4S dicluster domain
Structure domains: Alpha-Beta Plaits
Photosystem I reaction center subunit II Chain: D
Molecule details ›
Chain: D
Length: 138 amino acids
Theoretical weight: 15.26 KDa
Source organism: Synechococcus elongatus
UniProt:
  • Canonical: P0A420 (Residues: 2-139; Coverage: 99%)
Gene names: psaD, tll1724
Sequence domains: PsaD
Structure domains: Photosystem I PsaD, reaction center subunit II
Photosystem I reaction center subunit IV Chain: E
Molecule details ›
Chain: E
Length: 75 amino acids
Theoretical weight: 8.27 KDa
Source organism: Synechococcus elongatus
UniProt:
  • Canonical: P0A423 (Residues: 2-76; Coverage: 99%)
Gene names: psaE, tsl1567
Sequence domains: Photosystem I reaction centre subunit IV / PsaE
Structure domains: SH3 type barrels.
Photosystem I reaction center subunit III Chain: F
Molecule details ›
Chain: F
Length: 164 amino acids
Theoretical weight: 17.72 KDa
Source organism: Synechococcus elongatus
UniProt:
  • Canonical: P0A401 (Residues: 1-164; Coverage: 100%)
Gene names: psaF, tlr2411
Sequence domains: Photosystem I reaction centre subunit III
Structure domains: Photosystem I PsaF, reaction centre subunit III
Photosystem I reaction center subunit VIII Chain: I
Molecule details ›
Chain: I
Length: 38 amino acids
Theoretical weight: 4.3 KDa
Source organism: Synechococcus elongatus
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: 4.77 KDa
Source organism: Synechococcus elongatus
UniProt:
  • Canonical: P0A429 (Residues: 1-41; Coverage: 100%)
Gene names: psaJ, tsr2412
Sequence domains: Photosystem I reaction centre subunit IX / PsaJ
Structure domains: Single helix bin
Photosystem I reaction center subunit PsaK Chain: K
Molecule details ›
Chain: K
Length: 83 amino acids
Theoretical weight: 8.48 KDa
Source organism: Synechococcus elongatus
UniProt:
  • Canonical: P0A425 (Residues: 1-83; Coverage: 100%)
Gene names: psaK, tsr2273
Sequence domains: Photosystem I psaG / psaK
Structure domains: Photosystem I PsaK, reaction centre
Photosystem I reaction center subunit XI Chain: L
Molecule details ›
Chain: L
Length: 154 amino acids
Theoretical weight: 16.16 KDa
Source organism: Synechococcus elongatus
UniProt:
  • Canonical: Q8DGB4 (Residues: 2-155; Coverage: 99%)
Gene names: psaL, tlr2404
Sequence domains: Photosystem I reaction centre subunit XI
Structure domains: Photosystem I PsaL, 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: Synechococcus elongatus
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: 35 amino acids
Theoretical weight: 3.85 KDa
Source organism: Synechococcus elongatus
UniProt:
  • Canonical: Q8DKP6 (Residues: 5-35; Coverage: 80%)
Gene name: tsr0813
Sequence domains: PsaX family

Ligands and Environments

7 bound ligands:
Ligand CLA 96 x CLA
Ligand PQN 2 x PQN
Ligand SF4 3 x SF4
Ligand BCR 22 x BCR
Ligand LHG 3 x LHG
Ligand LMG 1 x LMG
Ligand CA 1 x CA
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID2
Spacegroup: P63
Unit cell:
a: 281Å b: 281Å c: 165.2Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.199 0.199 0.217

Quick links

Citations

184 review citations

Structure and function of photosystems I and II.
Nelson et al. (2006)
183 more

118 mentions without citation

Metalloproteins containing cytochrome, iron-sulfur, or copper redox centers.
Liu et al. (2014)
117 more