1S5L image
Deposition Date 2004-01-21
Release Date 2004-02-24
Last Version Date 2024-12-25
Entry Detail
PDB ID:
1S5L
Keywords:
PHOTOSYNTHESIS
Title:
Architecture of the photosynthetic oxygen evolving center
Biological Source:
Source Organism:
Thermosynechococcus elongatus (Taxon ID: 146786)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
3.50 Å
R-Value Free:
0.34
R-Value Work:
0.29
R-Value Observed:
0.29
Space Group:
P 21 21 21
1S5L validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem Q(B) protein
Gene (Uniprot):psbA1
Chain IDs:A, T (auth: a)
Chain Length:344
Number of Molecules:2
Biological Source:Thermosynechococcus elongatus
UniProt ID:P0A444 Pfam ID:PF00124 EC:1.10.3.9
Protein Blast
Polymer Type:polypeptide(L)
Molecule:photosystem II core light harvesting protein
Gene (Uniprot):psbB
Chain IDs:B, U (auth: b)
Chain Length:510
Number of Molecules:2
Biological Source:Thermosynechococcus elongatus
UniProt ID:Q8DIQ1 Pfam ID:PF00421
Protein Blast
Polymer Type:polypeptide(L)
Molecule:photosystem II CP43 protein
Gene (Uniprot):psbC
Chain IDs:C, V (auth: c)
Chain Length:473
Number of Molecules:2
Biological Source:Thermosynechococcus elongatus
UniProt ID:Q8DIF8 Pfam ID:PF00421
Protein Blast
Polymer Type:polypeptide(L)
Molecule:photosystem II reaction center D2 protein
Gene (Uniprot):psbD1, psbD2
Chain IDs:D, W (auth: d)
Chain Length:352
Number of Molecules:2
Biological Source:Thermosynechococcus elongatus
UniProt ID:Q8CM25 Pfam ID:PF00124 EC:1.10.3.9
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b559 alpha subunit
Gene (Uniprot):psbE
Chain IDs:E, X (auth: e)
Chain Length:84
Number of Molecules:2
Biological Source:Thermosynechococcus elongatus
UniProt ID:Q8DIP0 Pfam ID:PF00283, PF00284
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b559 beta subunit
Gene (Uniprot):psbF
Chain IDs:F, Y (auth: f)
Chain Length:45
Number of Molecules:2
Biological Source:Thermosynechococcus elongatus
UniProt ID:Q8DIN9 Pfam ID:PF00283
Protein Blast
Polymer Type:polypeptide(L)
Molecule:photosystem II PsbH protein
Gene (Uniprot):psbH
Chain IDs:G (auth: H), Z (auth: h)
Chain Length:66
Number of Molecules:2
Biological Source:Thermosynechococcus elongatus
UniProt ID:Q8DJ43 Pfam ID:PF00737
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem II reaction center I protein
Gene (Uniprot):psbI
Chain IDs:H (auth: I), AA (auth: i)
Chain Length:38
Number of Molecules:2
Biological Source:Thermosynechococcus elongatus
UniProt ID:Q8DJZ6 Pfam ID:PF02532
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem II reaction center J protein
Gene (Uniprot):psbJ
Chain IDs:I (auth: J), BA (auth: j)
Chain Length:40
Number of Molecules:2
Biological Source:Thermosynechococcus elongatus
UniProt ID:P59087 Pfam ID:PF01788
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem II reaction center protein K
Gene (Uniprot):psbK
Chain IDs:J (auth: K), CA (auth: k)
Chain Length:37
Number of Molecules:2
Biological Source:Thermosynechococcus elongatus
UniProt ID:Q9F1K9 Pfam ID:PF02533
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem II reaction center L protein
Gene (Uniprot):psbL
Chain IDs:K (auth: L), DA (auth: l)
Chain Length:37
Number of Molecules:2
Biological Source:Thermosynechococcus elongatus
UniProt ID:Q8DIN8 Pfam ID:PF02419
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem II reaction center M protein
Gene (Uniprot):psbM
Chain IDs:L (auth: M), EA (auth: m)
Chain Length:36
Number of Molecules:2
Biological Source:Thermosynechococcus elongatus
UniProt ID:Q8DHA7 Pfam ID:PF05151
Polymer Type:polypeptide(L)
Molecule:Photosystem II PsbN protein
Chain IDs:R (auth: N), KA (auth: n)
Chain Length:37
Number of Molecules:2
Biological Source:Thermosynechococcus elongatus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem II manganese-stabilizing polypeptide
Gene (Uniprot):psbO
Chain IDs:M (auth: O), FA (auth: o)
Chain Length:246
Number of Molecules:2
Biological Source:Thermosynechococcus elongatus
UniProt ID:P0A431 Pfam ID:PF01716
Protein Blast
Polymer Type:polypeptide(L)
Molecule:photosystem II PsbT protein
Gene (Uniprot):psbT
Chain IDs:N (auth: T), GA (auth: t)
Chain Length:32
Number of Molecules:2
Biological Source:Thermosynechococcus elongatus
UniProt ID:Q8DIQ0 Pfam ID:PF01405
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem II 12 kDa extrinsic protein
Gene (Uniprot):psbU
Chain IDs:O (auth: U), HA (auth: u)
Chain Length:134
Number of Molecules:2
Biological Source:Thermosynechococcus elongatus
UniProt ID:Q9F1L5 Pfam ID:PF06514
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c-550
Gene (Uniprot):psbV
Chain IDs:P (auth: V), IA (auth: v)
Chain Length:137
Number of Molecules:2
Biological Source:Thermosynechococcus elongatus
UniProt ID:P0A386 Pfam ID:PF14495
Protein Blast
Polymer Type:polypeptide(L)
Molecule:photosystem II PsbX protein
Gene (Uniprot):psbX
Chain IDs:Q (auth: X), JA (auth: x)
Chain Length:50
Number of Molecules:2
Biological Source:Thermosynechococcus elongatus
UniProt ID:Q9F1R6 Pfam ID:PF06596
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem II reaction center Z protein
Gene (Uniprot):psbZ
Chain IDs:S (auth: Z), LA (auth: z)
Chain Length:62
Number of Molecules:2
Biological Source:Thermosynechococcus elongatus
UniProt ID:Q8DHJ2 Pfam ID:PF01737
Ligand Molecules
BCR
BCT
CLA
FE
HEC
LMT
OEC
PHO
PL9
Primary Citation
Architecture of the Photosynthetic Oxygen-Evolving Center
Science 303 1831 1838 (2004)
PMID: 14764885 DOI: 10.1126/science.1093087

Abstact

Photosynthesis uses light energy to drive the oxidation of water at an oxygen-evolving catalytic site within photosystem II (PSII). We report the structure of PSII of the cyanobacterium Thermosynechococcus elongatus at 3.5 angstrom resolution. We have assigned most of the amino acid residues of this 650-kilodalton dimeric multisubunit complex and refined the structure to reveal its molecular architecture. Consequently, we are able to describe details of the binding sites for cofactors and propose a structure of the oxygen-evolving center (OEC). The data strongly suggest that the OEC contains a cubane-like Mn3CaO4 cluster linked to a fourth Mn by a mono-micro-oxo bridge. The details of the surrounding coordination sphere of the metal cluster and the implications for a possible oxygen-evolving mechanism are discussed.

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Disease

Primary Citation of related structures
1IZL
1FE1