1ILX

Excited State Dynamics in Photosystem II Revised. New Insights from the X-ray Structure.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.8 Å

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Excited-state dynamics in photosystem II: insights from the x-ray crystal structure.

Vasil'ev, S.Orth, P.Zouni, A.Owens, T.G.Bruce, D.

(2001) Proc.Natl.Acad.Sci.USA 98: 8602-8607

  • DOI: 10.1073/pnas.141239598

  • PubMed Abstract: 
  • The heart of oxygenic photosynthesis is photosystem II (PSII), a multisubunit protein complex that uses solar energy to drive the splitting of water and production of molecular oxygen. The effectiveness of the photochemical reaction center of PSII de ...

    The heart of oxygenic photosynthesis is photosystem II (PSII), a multisubunit protein complex that uses solar energy to drive the splitting of water and production of molecular oxygen. The effectiveness of the photochemical reaction center of PSII depends on the efficient transfer of excitation energy from the surrounding antenna chlorophylls. A kinetic model for PSII, based on the x-ray crystal structure coordinates of 37 antenna and reaction center pigment molecules, allows us to map the major energy transfer routes from the antenna chlorophylls to the reaction center chromophores. The model shows that energy transfer to the reaction center is slow compared with the rate of primary electron transport and depends on a few bridging chlorophyll molecules. This unexpected energetic isolation of the reaction center in PSII is similar to that found in the bacterial photosystem, conflicts with the established view of the photophysics of PSII, and may be a functional requirement for primary photochemistry in photosynthesis. In addition, the model predicts a value for the intrinsic photochemical rate constant that is 4 times that found in bacterial reaction centers.


    Related Citations: 
    • CRYSTAL STRUCTURE OF PHOTOSYSTEM II FROM SYNECHOCOCCUS ELONGATUS AT 3.8 A RESOLUTION.
      Zouni, A.,Witt, H.-T.,Kern, J.,Fromme, P.,Krauss, N.,Saenger, W.,Orth, P.
      (2001) Nature 409: 739


    Organizational Affiliation

    Department of Biological Sciences, Brock University, St. Catharines, ON, Canada L2S 3A1. svassili@spartan.ac.brocku.ca




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PHOTOSYSTEM II: SUBUNIT PSBA
A, J
169N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PHOTOSYSTEM II: SUBUNIT PSBD
B, K
174N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
PHOTOSYSTEM II: SUBUNIT PSBC
C, L
156N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
PHOTOSYSTEM II: SUBUNIT PSBB
D, M
155N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
PHOTOSYSTEM II: SUBUNIT PSBE
E, N
40N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
PHOTOSYSTEM II: SUBUNIT PSBF
F, O
30N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
PHOTOSYSTEM II: SUBUNIT UNKNOWN
G, P
312N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 8
MoleculeChainsSequence LengthOrganismDetails
PHOTOSYSTEM II: SUBUNIT PSBO
H, Q
115N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 9
MoleculeChainsSequence LengthOrganismDetails
PHOTOSYSTEM II: SUBUNIT PSBV
I, R
87N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 7 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MN
Query on MN

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A, J
MANGANESE (II) ION
Mn
WAEMQWOKJMHJLA-UHFFFAOYSA-N
 Ligand Interaction
CLA
Query on CLA

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A, B, C, D, G, J, K, L, M, P
CHLOROPHYLL A
C55 H72 Mg N4 O5
VIQFHHZSLDFWDU-AENOIHSZSA-M
 Ligand Interaction
PL9
Query on PL9

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B, K
2,3-DIMETHYL-5-(3,7,11,15,19,23,27,31,35-NONAMETHYL-2,6,10,14,18,22,26,30,34-HEXATRIACONTANONAENYL-2,5-CYCLOHEXADIENE-1,4-DIONE-2,3-DIMETHYL-5-SOLANESYL-1,4-BENZOQUINONE
PLASTOQUINONE 9
C53 H80 O2
FKUYMLZIRPABFK-UHFFFAOYSA-N
 Ligand Interaction
HEM
Query on HEM

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Download CCD File 
F, I, O, R
PROTOPORPHYRIN IX CONTAINING FE
HEME
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
FE
Query on FE

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B, K
FE (III) ION
Fe
VTLYFUHAOXGGBS-UHFFFAOYSA-N
 Ligand Interaction
PHO
Query on PHO

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A, B, J, K
PHEOPHYTIN A
C55 H74 N4 O5
CQIKWXUXPNUNDV-RCBXBCQGSA-N
 Ligand Interaction
CD
Query on CD

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H, Q
CADMIUM ION
Cd
WLZRMCYVCSSEQC-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
UNK
Query on UNK
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R
L-PEPTIDE LINKINGC4 H9 N O2

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.8 Å
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 130.010α = 90.00
b = 226.720β = 90.00
c = 308.290γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
DMphasing
MLPHAREphasing
DMmodel building
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-07-18
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance