1C51

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, an improved model of the stromal subunits PsaC, PsaD, and PsaE.

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

(1999) J.Biol.Chem. 274: 7351-7360


  • PubMed Abstract: 
  • An improved electron density map of photosystem I (PSI) calculated at 4-A resolution yields a more detailed structural model of the stromal subunits PsaC, PsaD, and PsaE than previously reported. The NMR structure of the subunit PsaE of PSI from Syne ...

    An improved electron density map of photosystem I (PSI) calculated at 4-A resolution yields a more detailed structural model of the stromal subunits PsaC, PsaD, and PsaE than previously reported. The NMR structure of the subunit PsaE of PSI from Synechococcus sp. PCC7002 (Falzone, C. J., Kao, Y.-H., Zhao, J., Bryant, D. A., and Lecomte, J. T. J. (1994) Biochemistry 33, 6052-6062) has been used as a model to interpret the region of the electron density map corresponding to this subunit. The spatial orientation with respect to other subunits is described as well as the possible interactions between the stromal subunits. A first model of PsaD consisting of a four-stranded beta-sheet and an alpha-helix is suggested, indicating that this subunit partly shields PsaC from the stromal side. In addition to the improvements on the stromal subunits, the structural model of the membrane-integral region of PSI is also extended. The current electron density map allows the identification of the N and C termini of the subunits PsaA and PsaB. The 11-transmembrane alpha-helices of these subunits can now be assigned uniquely to the hydrophobic segments identified by hydrophobicity analyses.


    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 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
    • Localisation of Two Phylloquinones, Qk and Qk', in an Improved Electron Density Map of Photosystem I at 4-A Resolution
      Klukas, O.,Schubert, W.-D.,Jordan, P.,Krauss, N.,Fromme, P.,Witt, H.T.,Saenger, W.
      (1999) J.Biol.Chem. 274: 7361
    • 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


    Organizational Affiliation

    Institut für Kristallographie, Freie Universität Berlin, Takustrassett 6, D-14195 Berlin, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (PHOTOSYSTEM I: SUBUNIT PSAA)
A
597N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (PHOTOSYSTEM I: SUBUNIT PSAB )
B
619N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (PHOTOSYSTEM I: SUBUNIT PSAC)
C
77N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (PHOTOSYSTEM I: SUBUNIT PSAD)
D
125N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (PHOTOSYSTEM I: SUBUNIT PSAE)
E
75N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (PHOTOSYSTEM I: SUBUNIT PSAF)
F
153N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (PHOTOSYSTEM I: SUBUNIT PSAK)
K
78N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 8
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (PHOTOSYSTEM I: SUBUNIT PSAL)
L
120N/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 
A, C
IRON/SULFUR CLUSTER
Fe4 S4
LJBDFODJNLIPKO-VKOJMFJBAC
 Ligand Interaction
PQN
Query on PQN

Download SDF File 
Download CCD File 
A, 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, D, E, 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
DENZOdata reduction
SCALEPACKdata scaling
SHARPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-03-31
    Type: Initial release
  • Version 1.1: 2008-04-26
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance