6qph

X-ray diffraction
3.4Å resolution

Dunaliella minimal PSI complex

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero undecamer (preferred)
PDBe Complex ID:
PDB-CPX-111128 (preferred)
Entry contents:
11 distinct polypeptide molecules
Macromolecules (11 distinct):
Chlorophyll a-b binding protein, chloroplastic Chain: 1
Molecule details ›
Chain: 1
Length: 195 amino acids
Theoretical weight: 21.15 KDa
Source organism: Dunaliella salina
UniProt:
  • Canonical: C1K003 (Residues: 32-226; Coverage: 86%)
Gene name: Lhca2
Sequence domains: Chlorophyll A-B binding protein
Lhc2 Chain: 2
Molecule details ›
Chain: 2
Length: 211 amino acids
Theoretical weight: 23.12 KDa
Source organism: Dunaliella salina
Chlorophyll a-b binding protein, chloroplastic Chain: 3
Molecule details ›
Chain: 3
Length: 210 amino acids
Theoretical weight: 22.73 KDa
Source organism: Dunaliella salina
UniProt:
  • Canonical: C1K004 (Residues: 69-278; Coverage: 73%)
Gene name: Lhca3
Sequence domains: Chlorophyll A-B binding protein
Lhc4 Chain: 4
Molecule details ›
Chain: 4
Length: 211 amino acids
Theoretical weight: 23.13 KDa
Source organism: Dunaliella salina
Photosystem I P700 chlorophyll a apoprotein A1 Chain: A
Molecule details ›
Chain: A
Length: 739 amino acids
Theoretical weight: 81.75 KDa
Source organism: Dunaliella salina
UniProt:
  • Canonical: D0FXV2 (Residues: 13-751; Coverage: 98%)
Gene name: psaA
Sequence domains: Photosystem I psaA/psaB protein
Photosystem I P700 chlorophyll a apoprotein A2 Chain: B
Molecule details ›
Chain: B
Length: 734 amino acids
Theoretical weight: 81.74 KDa
Source organism: Dunaliella salina
UniProt:
  • Canonical: D0FXZ0 (Residues: 2-735; Coverage: 100%)
Gene name: psaB
Sequence domains: Photosystem I psaA/psaB protein
Photosystem I iron-sulfur center Chain: C
Molecule details ›
Chain: C
Length: 80 amino acids
Theoretical weight: 8.72 KDa
Source organism: Dunaliella salina
UniProt:
  • Canonical: D0FXW7 (Residues: 2-81; Coverage: 99%)
Gene name: psaC
Sequence domains: 4Fe-4S dicluster domain
PsaD Chain: D
Molecule details ›
Chain: D
Length: 142 amino acids
Theoretical weight: 15.99 KDa
Source organism: Dunaliella salina
PsaE Chain: E
Molecule details ›
Chain: E
Length: 64 amino acids
Theoretical weight: 7.3 KDa
Source organism: Dunaliella salina
PsaF Chain: F
Molecule details ›
Chain: F
Length: 163 amino acids
Theoretical weight: 18.21 KDa
Source organism: Dunaliella salina
Photosystem I reaction center subunit IX Chain: J
Molecule details ›
Chain: J
Length: 41 amino acids
Theoretical weight: 4.61 KDa
Source organism: Dunaliella salina
UniProt:
  • Canonical: D0FXW0 (Residues: 1-41; Coverage: 100%)
Gene name: psaJ
Sequence domains: Photosystem I reaction centre subunit IX / PsaJ

Ligands and Environments

Experiments and Validation Details

Entry percentile scores
X-ray source: SLS BEAMLINE X06SA
Spacegroup: P21
Unit cell:
a: 158.881Å b: 100.506Å c: 191.04Å
α: 90° β: 91.73° γ: 90°
R-values:
R R work R free
0.338 0.337 0.356