2PPS

PHOTOSYNTHETIC REACTION CENTER AND CORE ANTENNA SYSTEM (TRIMERIC), ALPHA CARBON ONLY


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4 Å

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Photosystem I at 4 A resolution represents the first structural model of a joint photosynthetic reaction centre and core antenna system.

Krauss, N.Schubert, W.D.Klukas, O.Fromme, P.Witt, H.T.Saenger, W.

(1996) Nat.Struct.Mol.Biol. 3: 965-973


  • PubMed Abstract: 
  • The 4 A X-ray structure model of trimeric photosystem I of the cyanobacterium Synechococcus elongatus reveals 31 transmembrane, nine surface and three stromal alpha-helices per monomer, assigned to the 11 protein subunits: PsaA and PsaB are related b ...

    The 4 A X-ray structure model of trimeric photosystem I of the cyanobacterium Synechococcus elongatus reveals 31 transmembrane, nine surface and three stromal alpha-helices per monomer, assigned to the 11 protein subunits: PsaA and PsaB are related by a pseudo two-fold axis normal to the membrane plane, along which the electron transfer pigments are arranged. 65 antenna chlorophyll a (Chl a) molecules separated by < or = 16 A form an oval, clustered net continuous with the electron transfer chain through the second and third Chl a pairs of the electron transfer system. This suggests a dual role for these Chl a both in excitation energy and electron transfer. The architecture of the protein core indicates quinone and iron-sulphur type reaction centres to have a common ancestor.


    Related Citations: 
    • Three-Dimensional Structure of System I of Photosynthesis at 6A Resolution,
      Krauss, N.,Hinrichs, W.,Witt, I.,Fromme, P.,Pritzkow, W.,Dauter, Z.,Betzel, C.,Wilson, K.S.,Witt, H.T.,Saenger, W.
      (1993) Nature 361: 326
    • Photosystem I of Synechococcus Elongatus at 4 A Resolution: Comprehensive Structure Analysis
      Schubert, W.D.,Klukas, O.,Krauss, N.,Saenger, W.,Fromme, P.,Witt, H.T.
      (1997) J.Mol.Biol. 272: 741
    • X-Ray Characterization of Single Crystals of the Reaction Center I of Water Splitting Photosynthesis
      Witt, I.,Witt, H.T.,Di Fiore, D.,Rogner, M.,Hinrichs, W.,Saenger, W.,Granzin, J.,Betzel, C.,Dauter, Z.
      (1988) Ber.Bunsenges.Phys.Chem. 92: 1503
    • Present State of the Crystal Structure Analysis of Photosystem I at 4.5 A Resolution
      Schubert, W.D.,Klukas, O.,Krauss, N.,Saenger, W.,Fromme, P.,Witt, H.T.
      (1995) Photosynthesis : From Light to Biosphere : Proceedings of the Xth International Photosynthesis Congress, Montpellier, France, 20-25 August 1995 2: 3


    Organizational Affiliation

    Institut für Kristallographie, Freie Universität Berlin, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PHOTOSYSTEM I
A
478N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PHOTOSYSTEM I
B
503N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
PHOTOSYSTEM I
L
111N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
PHOTOSYSTEM I
K
64N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
PHOTOSYSTEM I
F
130N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
PHOTOSYSTEM I
C
80N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SF4
Query on SF4

Download SDF File 
Download CCD File 
B, C
IRON/SULFUR CLUSTER
Fe4 S4
LJBDFODJNLIPKO-VKOJMFJBAC
 Ligand Interaction
PQN
Query on PQN

Download SDF File 
Download CCD File 
B
PHYLLOQUINONE
VITAMIN K1; 2-METHYL-3-PHYTYL-1,4-NAPHTHOQUINONE
C31 H46 O2
MBWXNTAXLNYFJB-NKFFZRIASA-N
 Ligand Interaction
CLA
Query on CLA

Download SDF File 
Download CCD File 
A, B, F, K, L
CHLOROPHYLL A
C55 H72 Mg N4 O5
VIQFHHZSLDFWDU-AENOIHSZSA-M
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
UNK
Query on UNK
A, B, C, F, K, L
L-PEPTIDE LINKINGC4 H9 N O2

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4 Å
  • Space Group: P 63
Unit Cell:
Length (Å)Angle (°)
a = 286.000α = 90.00
b = 286.000β = 90.00
c = 167.000γ = 120.00
Software Package:
Software NamePurpose
ROTAVATA)data scaling
MLPHAREphasing
MOSFLMdata reduction
CCP4data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-05-27
    Type: Initial release
  • Version 1.1: 2008-03-25
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance