› 8am5

Electron Microscopy
3.1Å resolution

Function and Biology Details

Reactions catalysed: 
2 H(2)O + 2 plastoquinone + 4 light = O(2) + 2 plastoquinol
Reduced plastocyanin + oxidized ferredoxin + light = oxidized plastocyanin + reduced ferredoxin
Biochemical function:
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
hetero heptadecamer (preferred)
PDBe Complex ID:
PDB-CPX-226729 (preferred)
Entry contents:
17 distinct polypeptide molecules
Macromolecules (17 distinct):
Photosystem II protein D1 2 Chain: A
Molecule details ›
Chain: A
Length: 344 amino acids
Theoretical weight: 38.28 KDa
Source organism: Synechocystis sp. PCC 6803
Expression system: Synechocystis sp. PCC 6803
UniProt:
  • Canonical: P16033 (Residues: 1-344; Coverage: 96%)
Gene names: psbA-2, psbA-3, psbA2, psbA3, sll1867, slr1311
Sequence domains: Photosynthetic reaction centre protein
Photosystem II D2 protein Chain: D
Molecule details ›
Chain: D
Length: 336 amino acids
Theoretical weight: 37.82 KDa
Source organism: Synechocystis sp. PCC 6803
Expression system: Synechocystis sp. PCC 6803
UniProt:
  • Canonical: P09192 (Residues: 2-330; Coverage: 94%)
Gene names: psbD, sll0849
Sequence domains: Photosynthetic reaction centre protein
Cytochrome b559 subunit alpha Chain: E
Molecule details ›
Chain: E
Length: 81 amino acids
Theoretical weight: 9.45 KDa
Source organism: Synechocystis sp. PCC 6803
Expression system: Synechocystis sp. PCC 6803
UniProt:
  • Canonical: P09190 (Residues: 1-81; Coverage: 100%)
Gene names: psbE, ssr3451
Sequence domains:
Cytochrome b559 subunit beta Chain: F
Molecule details ›
Chain: F
Length: 44 amino acids
Theoretical weight: 4.94 KDa
Source organism: Synechocystis sp. PCC 6803
Expression system: Synechocystis sp. PCC 6803
UniProt:
  • Canonical: P09191 (Residues: 1-44; Coverage: 100%)
Gene names: psbF, smr0006
Sequence domains: Cytochrome b559, alpha (gene psbE) and beta (gene psbF)subunits
Photosystem II reaction center protein I Chain: I
Molecule details ›
Chain: I
Length: 38 amino acids
Theoretical weight: 4.31 KDa
Source organism: Synechocystis sp. PCC 6803
Expression system: Synechocystis sp. PCC 6803
UniProt:
  • Canonical: Q54697 (Residues: 1-38; Coverage: 100%)
Gene names: psbI, sml0001
Sequence domains: Photosystem II reaction centre I protein (PSII 4.8 kDa protein)
Photosystem II assembly lipoprotein Ycf48 Chain: S
Molecule details ›
Chain: S
Length: 342 amino acids
Theoretical weight: 37.32 KDa
Source organism: Synechocystis sp. PCC 6803
Expression system: Synechocystis sp. PCC 6803
UniProt:
  • Canonical: P73069 (Residues: 1-342; Coverage: 100%)
Gene names: slr2034, ycf48
Photosystem I P700 chlorophyll a apoprotein A1 Chain: a
Molecule details ›
Chain: a
Length: 751 amino acids
Theoretical weight: 83.04 KDa
Source organism: Synechocystis sp. PCC 6803
Expression system: Synechocystis sp. PCC 6803
UniProt:
  • Canonical: P29254 (Residues: 1-751; Coverage: 100%)
Gene names: psaA, slr1834
Sequence domains: Photosystem I psaA/psaB protein
Photosystem I P700 chlorophyll a apoprotein A2 Chain: b
Molecule details ›
Chain: b
Length: 731 amino acids
Theoretical weight: 81.37 KDa
Source organism: Synechocystis sp. PCC 6803
Expression system: Synechocystis sp. PCC 6803
UniProt:
  • Canonical: P29255 (Residues: 1-731; Coverage: 100%)
Gene names: psaB, slr1835
Sequence domains: Photosystem I psaA/psaB protein
Photosystem I iron-sulfur center Chain: c
Molecule details ›
Chain: c
Length: 81 amino acids
Theoretical weight: 8.84 KDa
Source organism: Synechocystis sp. PCC 6803
Expression system: Synechocystis sp. PCC 6803
UniProt:
  • Canonical: P32422 (Residues: 1-81; Coverage: 100%)
Gene names: psaC, ssl0563
Sequence domains: 4Fe-4S dicluster domain
Photosystem I reaction center subunit II Chain: d
Molecule details ›
Chain: d
Length: 141 amino acids
Theoretical weight: 15.66 KDa
Source organism: Synechocystis sp. PCC 6803
Expression system: Synechocystis sp. PCC 6803
UniProt:
  • Canonical: P19569 (Residues: 1-141; Coverage: 100%)
Gene names: psaD, slr0737
Sequence domains: PsaD
Photosystem I reaction center subunit IV Chain: e
Molecule details ›
Chain: e
Length: 74 amino acids
Theoretical weight: 8.15 KDa
Source organism: Synechocystis sp. PCC 6803
Expression system: Synechocystis sp. PCC 6803
UniProt:
  • Canonical: P12975 (Residues: 1-74; Coverage: 100%)
Gene names: psaE, ssr2831
Sequence domains: Photosystem I reaction centre subunit IV / PsaE
Photosystem I reaction center subunit III Chain: f
Molecule details ›
Chain: f
Length: 165 amino acids
Theoretical weight: 18.27 KDa
Source organism: Synechocystis sp. PCC 6803
Expression system: Synechocystis sp. PCC 6803
UniProt:
  • Canonical: P29256 (Residues: 1-165; Coverage: 100%)
Gene names: psaF, sll0819
Sequence domains: Photosystem I reaction centre subunit III
Photosystem I reaction center subunit VIII Chain: i
Molecule details ›
Chain: i
Length: 40 amino acids
Theoretical weight: 4.41 KDa
Source organism: Synechocystis sp. PCC 6803
Expression system: Synechocystis sp. PCC 6803
UniProt:
  • Canonical: Q55330 (Residues: 1-40; Coverage: 100%)
Gene names: psaI, smr0004
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: 4.54 KDa
Source organism: Synechocystis sp. PCC 6803
Expression system: Synechocystis sp. PCC 6803
UniProt:
  • Canonical: Q55329 (Residues: 1-40; Coverage: 100%)
Gene names: psaJ, sml0008
Sequence domains: Photosystem I reaction centre subunit IX / PsaJ
Photosystem I reaction center subunit PsaK 1 Chain: k
Molecule details ›
Chain: k
Length: 86 amino acids
Theoretical weight: 8.65 KDa
Source organism: Synechocystis sp. PCC 6803
Expression system: Synechocystis sp. PCC 6803
UniProt:
  • Canonical: P72712 (Residues: 1-86; Coverage: 100%)
Gene names: psaK, psaK1, ssr0390
Sequence domains: Photosystem I psaG / psaK
Photosystem I reaction center subunit XI Chain: l
Molecule details ›
Chain: l
Length: 157 amino acids
Theoretical weight: 16.63 KDa
Source organism: Synechocystis sp. PCC 6803
Expression system: Synechocystis sp. PCC 6803
UniProt:
  • Canonical: P37277 (Residues: 1-157; Coverage: 100%)
Gene names: psaL, slr1655
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: 3.38 KDa
Source organism: Synechocystis sp. PCC 6803
Expression system: Synechocystis sp. PCC 6803
UniProt:
  • Canonical: P72986 (Residues: 1-31; Coverage: 100%)
Gene names: psaM, smr0005
Sequence domains: Photosystem I protein M (PsaM)

Ligands and Environments


Cofactor: Ligand HEM 1 x HEM
14 bound ligands:
Ligand FE2 1 x FE2
Ligand CLA 101 x CLA
Ligand PHO 2 x PHO
Ligand BCR 19 x BCR
Ligand CL0 1 x CL0
Ligand PQN 2 x PQN
Ligand SF4 3 x SF4
Ligand LHG 5 x LHG
Ligand LMG 4 x LMG
Ligand 45D 1 x 45D
Ligand ECH 2 x ECH
Ligand EQ3 1 x EQ3
Ligand ZEX 2 x ZEX
Ligand LMT 1 x LMT
No modified residues

Experiments and Validation Details

Entry percentile scores
Resolution: 3.1Å
Relevant EMDB volumes: EMD-15522
Expression system: Synechocystis sp. PCC 6803

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