1C51

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.00 Å

wwPDB Validation   3D Report Full Report


This is version 2.0 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

  • DOI: https://doi.org/10.1074/jbc.274.11.7351
  • Primary Citation of Related Structures:  
    1C51

  • 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 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.


  • Organizational Affiliation

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


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PROTEIN (PHOTOSYSTEM I: SUBUNIT PSAA)597Synechococcus elongatusMutation(s): 0 
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
PROTEIN (PHOTOSYSTEM I: SUBUNIT PSAB )619Synechococcus elongatusMutation(s): 0 
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
PROTEIN (PHOTOSYSTEM I: SUBUNIT PSAC)77Synechococcus elongatusMutation(s): 0 
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
PROTEIN (PHOTOSYSTEM I: SUBUNIT PSAD)125Synechococcus elongatusMutation(s): 0 
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
PROTEIN (PHOTOSYSTEM I: SUBUNIT PSAE)75Synechococcus elongatusMutation(s): 0 
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
PROTEIN (PHOTOSYSTEM I: SUBUNIT PSAF)153Synechococcus elongatusMutation(s): 0 
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
PROTEIN (PHOTOSYSTEM I: SUBUNIT PSAK)G [auth K]78Synechococcus elongatusMutation(s): 0 
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
PROTEIN (PHOTOSYSTEM I: SUBUNIT PSAL)H [auth L]120Synechococcus elongatusMutation(s): 0 
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Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
CLA
Query on CLA

Download Ideal Coordinates CCD File 
AA [auth A]
AB [auth B]
AC [auth F]
BA [auth A]
BB [auth B]
AA [auth A],
AB [auth B],
AC [auth F],
BA [auth A],
BB [auth B],
BC [auth F],
CA [auth A],
CB [auth B],
CC [auth F],
DA [auth A],
DB [auth B],
DC [auth K],
EA [auth A],
EB [auth B],
EC [auth L],
FA [auth A],
FB [auth B],
FC [auth L],
GA [auth A],
GB [auth B],
GC [auth L],
HA [auth A],
HB [auth B],
I [auth A],
IA [auth A],
IB [auth B],
J [auth A],
JA [auth A],
JB [auth B],
K [auth A],
KA [auth A],
KB [auth B],
LA [auth A],
LB [auth B],
MA [auth A],
MB [auth B],
N [auth A],
NA [auth A],
NB [auth B],
O [auth A],
OA [auth B],
OB [auth B],
P [auth A],
PA [auth B],
PB [auth B],
Q [auth A],
QA [auth B],
QB [auth B],
R [auth A],
RB [auth B],
S [auth A],
SA [auth B],
SB [auth B],
T [auth A],
TA [auth B],
TB [auth B],
U [auth A],
UA [auth B],
UB [auth B],
V [auth A],
VA [auth B],
VB [auth B],
W [auth A],
WA [auth B],
X [auth A],
XA [auth B],
Y [auth A],
YA [auth B],
YB [auth F],
Z [auth A],
ZA [auth B],
ZB [auth F]
CHLOROPHYLL A
C55 H72 Mg N4 O5
ATNHDLDRLWWWCB-AENOIHSZSA-M
PQN
Query on PQN

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L [auth A],
RA [auth B]
PHYLLOQUINONE
C31 H46 O2
MBWXNTAXLNYFJB-NKFFZRIASA-N
SF4
Query on SF4

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M [auth A],
WB [auth C],
XB [auth C]
IRON/SULFUR CLUSTER
Fe4 S4
LJBDFODJNLIPKO-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.00 Å
  • Space Group: P 63
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 286α = 90
b = 286β = 90
c = 167γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
SHARPphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-03-31
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 2.0: 2023-12-27
    Changes: Data collection, Database references, Derived calculations, Non-polymer description