6Z1J

Photosynthetic Reaction Center From Rhodobacter Sphaeroides strain RV LSP co-crystallization with spheroidene


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.190 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Novel approaches for the lipid sponge phase crystallization of the Rhodobacter sphaeroides photosynthetic reaction center.

Selikhanov, G.Fufina, T.Vasilieva, L.Betzel, C.Gabdulkhakov, A.

(2020) IUCrJ 7: 1084-1091

  • DOI: https://doi.org/10.1107/S2052252520012142
  • Primary Citation of Related Structures:  
    6Z02, 6Z1J, 6Z27

  • PubMed Abstract: 

    With the recent developments in the field of free-electron-laser-based serial femtosecond crystallography, the necessity to obtain a large number of high-quality crystals has emerged. In this work crystallization techniques were selected, tested and optimized for the lipid mesophase crystallization of the Rhodobacter sphaeroides membrane pigment-protein complex, known as the photosynthetic reaction center (RC). Novel approaches for lipid sponge phase crystallization in comparatively large volumes using Hamilton gas-tight glass syringes and plastic pipetting tips are described. An analysis of RC crystal structures obtained by lipid mesophase crystallization revealed non-native ligands that displaced the native electron-transfer cofactors (carotenoid sphero-idene and a ubi-quinone molecule) from their binding pockets. These ligands were identified and were found to be lipids that are major mesophase components. The selection of distinct co-crystallization conditions with the missing cofactors facilitated the restoration of sphero-idene in its binding site.


  • Organizational Affiliation

    Institute of Protein Research, Russian Academy of Sciences, Institutskaya 4, Puschino, Moscow region 142290, Russian Federation.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Reaction center protein H chainA [auth H]241Cereibacter sphaeroidesMutation(s): 0 
Gene Names: puhA
Membrane Entity: Yes 
UniProt
Find proteins for P0C0Y7 (Cereibacter sphaeroides)
Explore P0C0Y7 
Go to UniProtKB:  P0C0Y7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0C0Y7
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Reaction center protein L chainB [auth L]281Cereibacter sphaeroidesMutation(s): 0 
Gene Names: pufL
Membrane Entity: Yes 
UniProt
Find proteins for P0C0Y8 (Cereibacter sphaeroides)
Explore P0C0Y8 
Go to UniProtKB:  P0C0Y8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0C0Y8
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Reaction center protein M chainC [auth M]302Cereibacter sphaeroidesMutation(s): 0 
Gene Names: pufM
Membrane Entity: Yes 
UniProt
Find proteins for P0C0Y9 (Cereibacter sphaeroides)
Explore P0C0Y9 
Go to UniProtKB:  P0C0Y9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0C0Y9
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 10 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
BCL (Subject of Investigation/LOI)
Query on BCL

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E [auth L],
F [auth L],
K [auth M],
L [auth M]
BACTERIOCHLOROPHYLL A
C55 H74 Mg N4 O6
DSJXIQQMORJERS-AGGZHOMASA-M
BPH (Subject of Investigation/LOI)
Query on BPH

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G [auth L],
M
BACTERIOPHEOPHYTIN A
C55 H76 N4 O6
KWOZSBGNAHVCKG-SZQBJALDSA-N
U10 (Subject of Investigation/LOI)
Query on U10

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O [auth M]UBIQUINONE-10
C59 H90 O4
ACTIUHUUMQJHFO-UPTCCGCDSA-N
SPN (Subject of Investigation/LOI)
Query on SPN

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P [auth M]SPEROIDENONE
C41 H70 O2
GWQAMGYOEYXWJF-YCDPMLDASA-N
NKP
Query on NKP

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X [auth M],
Y [auth M]
(2R)-2-hydroxy-3-(phosphonooxy)propyl (9E)-octadec-9-enoate
C21 H41 O7 P
WRGQSWVCFNIUNZ-SQUSKLHYSA-N
OLC
Query on OLC

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J [auth L](2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate
C21 H40 O4
RZRNAYUHWVFMIP-GDCKJWNLSA-N
LDA
Query on LDA

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D [auth H],
Q [auth M],
R [auth M],
S [auth M]
LAURYL DIMETHYLAMINE-N-OXIDE
C14 H31 N O
SYELZBGXAIXKHU-UHFFFAOYSA-N
PO4
Query on PO4

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W [auth M]PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
FE
Query on FE

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N [auth M]FE (III) ION
Fe
VTLYFUHAOXGGBS-UHFFFAOYSA-N
UNL
Query on UNL

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H [auth L],
I [auth L],
T [auth M],
U [auth M],
V [auth M]
Unknown ligand
VTLYFUHAOXGGBS-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.190 
  • Space Group: P 42 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 99.89α = 90
b = 99.89β = 90
c = 238.52γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Russian Foundation for Basic ResearchRussian Federation18-02-40008_mega

Revision History  (Full details and data files)

  • Version 1.0: 2020-12-02
    Type: Initial release
  • Version 1.1: 2024-01-24
    Changes: Data collection, Database references, Refinement description, Structure summary