1JB0 | pdb_00001jb0

Crystal Structure of Photosystem I: a Photosynthetic Reaction Center and Core Antenna System from Cyanobacteria


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 
    0.217 (Depositor) 
  • R-Value Work: 
    0.199 (Depositor) 
  • R-Value Observed: 
    0.199 (Depositor) 

wwPDB Validation 3D Report Full Report

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This is version 2.0 of the entry. See complete history

Literature

Three-dimensional Structure of Cyanobacterial Photosystem I at 2.5 A Resolution

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

(2001) Nature 411: 909-917

  • DOI: https://doi.org/10.1038/35082000
  • Primary Citation Related Structures: 
    1JB0

  • PubMed Abstract: 

    Life on Earth depends on photosynthesis, the conversion of light energy from the Sun to chemical energy. In plants, green algae and cyanobacteria, this process is driven by the cooperation of two large protein-cofactor complexes, photosystems I and II, which are located in the thylakoid photosynthetic membranes. The crystal structure of photosystem I from the thermophilic cyanobacterium Synechococcus elongatus described here provides a picture at atomic detail of 12 protein subunits and 127 cofactors comprising 96 chlorophylls, 2 phylloquinones, 3 Fe4S4 clusters, 22 carotenoids, 4 lipids, a putative Ca2+ ion and 201 water molecules. The structural information on the proteins and cofactors and their interactions provides a basis for understanding how the high efficiency of photosystem I in light capturing and electron transfer is achieved.


  • Organizational Affiliation
    • Institut für Chemie/Kristallographie, Freie Universität Berlin, D-14195 Berlin, Takustrasse 6, Germany.

Macromolecule Content 

  • Total Structure Weight: 359.7 kDa 
  • Atom Count: 24,198 
  • Modeled Residue Count: 2,243 
  • Deposited Residue Count: 2,334 
  • Unique protein chains: 12

Macromolecules

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Entity ID: 1
MoleculeChains  Sequence LengthOrganismDetailsImage
PHOTOSYSTEM I P700 CHLOROPHYLL A APOPROTEIN A1755Synechococcus elongatusMutation(s): 0 
EC: 1.97.1.12
Membrane Entity: Yes 
UniProt
Find proteins for P0A405 (Thermosynechococcus vestitus (strain NIES-2133 / IAM M-273 / BP-1))
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Reference Sequence
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Entity ID: 2
MoleculeChains  Sequence LengthOrganismDetailsImage
PHOTOSYSTEM I P700 CHLOROPHYLL A APOPROTEIN A2740Synechococcus elongatusMutation(s): 0 
EC: 1.97.1.12
Membrane Entity: Yes 
UniProt
Find proteins for P0A407 (Thermosynechococcus vestitus (strain NIES-2133 / IAM M-273 / BP-1))
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Reference Sequence
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Entity ID: 3
MoleculeChains  Sequence LengthOrganismDetailsImage
PHOTOSYSTEM I IRON-SULFUR CENTER80Synechococcus elongatusMutation(s): 0 
EC: 1.97.1.12
Membrane Entity: Yes 
UniProt
Find proteins for P0A415 (Thermosynechococcus vestitus (strain NIES-2133 / IAM M-273 / BP-1))
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Reference Sequence
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Entity ID: 4
MoleculeChains  Sequence LengthOrganismDetailsImage
PHOTOSYSTEM 1 REACTION CENTRE SUBUNIT II138Synechococcus elongatusMutation(s): 0 
UniProt
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Reference Sequence
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Entity ID: 5
MoleculeChains  Sequence LengthOrganismDetailsImage
PHOTOSYSTEM 1 REACTION CENTRE SUBUNIT IV75Synechococcus elongatusMutation(s): 0 
Membrane Entity: Yes 
UniProt
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Reference Sequence
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Entity ID: 6
MoleculeChains  Sequence LengthOrganismDetailsImage
PHOTOSYSTEM 1 REACTION CENTRE SUBUNIT III164Synechococcus elongatusMutation(s): 0 
Membrane Entity: Yes 
UniProt
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Reference Sequence
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Entity ID: 7
MoleculeChains  Sequence LengthOrganismDetailsImage
PHOTOSYSTEM 1 REACTION CENTRE SUBUNIT VIIIG [auth I]38Synechococcus elongatusMutation(s): 0 
Membrane Entity: Yes 
UniProt
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Reference Sequence
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Entity ID: 8
MoleculeChains  Sequence LengthOrganismDetailsImage
PHOTOSYSTEM 1 REACTION CENTRE SUBUNIT IXH [auth J]41Synechococcus elongatusMutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for P0A429 (Thermosynechococcus vestitus (strain NIES-2133 / IAM M-273 / BP-1))
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Reference Sequence
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Entity ID: 9
MoleculeChains  Sequence LengthOrganismDetailsImage
PHOTOSYSTEM 1 REACTION CENTRE SUBUNIT XI [auth K]83Synechococcus elongatusMutation(s): 0 
Membrane Entity: Yes 
UniProt
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Reference Sequence
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Entity ID: 10
MoleculeChains  Sequence LengthOrganismDetailsImage
PHOTOSYSTEM 1 REACTION CENTRE SUBUNIT XIJ [auth L]154Synechococcus elongatusMutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for Q8DGB4 (Thermosynechococcus vestitus (strain NIES-2133 / IAM M-273 / BP-1))
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Reference Sequence
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Entity ID: 11
MoleculeChains  Sequence LengthOrganismDetailsImage
PHOTOSYSTEM 1 REACTION CENTRE SUBUNIT XIIK [auth M]31Synechococcus elongatusMutation(s): 0 
Membrane Entity: Yes 
UniProt
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Reference Sequence
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Entity ID: 12
MoleculeChains  Sequence LengthOrganismDetailsImage
PHOTOSYSTEM I SUBUNIT PSAXL [auth X]35Synechococcus elongatusMutation(s): 0 
Membrane Entity: Yes 
UniProt
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Reference Sequence

Small Molecules

Ligands 7 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
CLA

Query on CLA



Download:Ideal Coordinates CCD File
AA [auth A]
AB [auth A]
AC [auth B]
AD [auth B]
AE [auth K]
AA [auth A],
AB [auth A],
AC [auth B],
AD [auth B],
AE [auth K],
BA [auth A],
BB [auth A],
BC [auth B],
BD [auth B],
CA [auth A],
CB [auth A],
CC [auth B],
CD [auth B],
CE [auth L],
DA [auth A],
DB [auth A],
DC [auth B],
DD [auth B],
DE [auth L],
EA [auth A],
EB [auth A],
EC [auth B],
ED [auth B],
EE [auth L],
FA [auth A],
FB [auth A],
FC [auth B],
GA [auth A],
GC [auth B],
HA [auth A],
HC [auth B],
HE [auth M],
IA [auth A],
IC [auth B],
JA [auth A],
JC [auth B],
JE [auth X],
KA [auth A],
KC [auth B],
LA [auth A],
LC [auth B],
M [auth A],
MA [auth A],
MC [auth B],
N [auth A],
NA [auth A],
NC [auth B],
O [auth A],
OA [auth A],
OC [auth B],
P [auth A],
PA [auth A],
PC [auth B],
Q [auth A],
QA [auth A],
QB [auth B],
QC [auth B],
R [auth A],
RA [auth A],
RB [auth B],
RC [auth B],
RD [auth F],
S [auth A],
SA [auth A],
SB [auth B],
SC [auth B],
T [auth A],
TA [auth A],
TB [auth B],
TC [auth B],
U [auth A],
UA [auth A],
UB [auth B],
UC [auth B],
V [auth A],
VA [auth A],
VB [auth B],
VC [auth B],
VD [auth J],
W [auth A],
WA [auth A],
WB [auth B],
WC [auth B],
WD [auth J],
X [auth A],
XA [auth A],
XB [auth B],
XC [auth B],
Y [auth A],
YA [auth A],
YB [auth B],
YC [auth B],
Z [auth A],
ZA [auth A],
ZB [auth B],
ZC [auth B]
CHLOROPHYLL A
C55 H72 Mg N4 O5
ATNHDLDRLWWWCB-AENOIHSZSA-M
LMG

Query on LMG



Download:Ideal Coordinates CCD File
ND [auth B]1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE
C45 H86 O10
DCLTVZLYPPIIID-CVELTQQQSA-N
LHG

Query on LHG



Download:Ideal Coordinates CCD File
OB [auth A],
OD [auth B],
PB [auth A]
1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE
C38 H75 O10 P
BIABMEZBCHDPBV-MPQUPPDSSA-N
BCR

Query on BCR



Download:Ideal Coordinates CCD File
FE [auth L]
GD [auth B]
GE [auth L]
HD [auth B]
IB [auth A]
FE [auth L],
GD [auth B],
GE [auth L],
HD [auth B],
IB [auth A],
ID [auth B],
IE [auth M],
JB [auth A],
JD [auth B],
KB [auth A],
KD [auth B],
LB [auth A],
LD [auth B],
MB [auth A],
MD [auth B],
NB [auth A],
SD [auth F],
TD [auth I],
UD [auth I],
XD [auth J],
YD [auth J],
ZD [auth J]
BETA-CAROTENE
C40 H56
OENHQHLEOONYIE-JLTXGRSLSA-N
PQN

Query on PQN



Download:Ideal Coordinates CCD File
FD [auth B],
GB [auth A]
PHYLLOQUINONE
C31 H46 O2
MBWXNTAXLNYFJB-NKFFZRIASA-N
SF4

Query on SF4



Download:Ideal Coordinates CCD File
HB [auth A],
PD [auth C],
QD [auth C]
IRON/SULFUR CLUSTER
Fe4 S4
LJBDFODJNLIPKO-UHFFFAOYSA-N
CA

Query on CA



Download:Ideal Coordinates CCD File
BE [auth L]CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free:  0.217 (Depositor) 
  • R-Value Work:  0.199 (Depositor) 
  • R-Value Observed: 0.199 (Depositor) 
Space Group: P 63
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 281α = 90
b = 281β = 90
c = 165.2γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
SHARPphasing
CNSrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2001-08-01
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2012-07-25
    Changes: Non-polymer description
  • Version 1.4: 2016-05-11
    Changes: Derived calculations
  • Version 1.5: 2018-01-24
    Changes: Database references
  • Version 1.6: 2019-11-20
    Changes: Advisory, Database references, Derived calculations
  • Version 2.0: 2024-10-30
    Changes: Data collection, Database references, Derived calculations, Non-polymer description, Structure summary