1QOV

PHOTOSYNTHETIC REACTION CENTER MUTANT WITH ALA M260 REPLACED WITH TRP (CHAIN M, A260W)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.186 
  • R-Value Work: 0.169 

Starting Model: other
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wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Structural Details of an Interaction between Cardiolipin and an Integral Membrane Protein

Mcauley, K.E.Fyfe, P.K.Ridge, J.P.Isaacs, N.W.Cogdell, R.J.Jones, M.R.

(1999) Proc Natl Acad Sci U S A 96: 14706

  • DOI: https://doi.org/10.1073/pnas.96.26.14706
  • Primary Citation of Related Structures:  
    1QOV

  • PubMed Abstract: 

    Anionic lipids play a variety of key roles in biomembrane function, including providing the immediate environment for the integral membrane proteins that catalyze photosynthetic and respiratory energy transduction. Little is known about the molecular basis of these lipid-protein interactions. In this study, x-ray crystallography has been used to examine the structural details of an interaction between cardiolipin and the photoreaction center, a key light-driven electron transfer protein complex found in the cytoplasmic membrane of photosynthetic bacteria. X-ray diffraction data collected over the resolution range 30.0-2.1 A show that binding of the lipid to the protein involves a combination of ionic interactions between the protein and the lipid headgroup and van der Waals interactions between the lipid tails and the electroneutral intramembrane surface of the protein. In the headgroup region, ionic interactions involve polar groups of a number of residues, the protein backbone, and bound water molecules. The lipid tails sit along largely hydrophobic grooves in the irregular surface of the protein. In addition to providing new information on the immediate lipid environment of a key integral membrane protein, this study provides the first, to our knowledge, high-resolution x-ray crystal structure for cardiolipin. The possible significance of this interaction between an integral membrane protein and cardiolipin is considered.


  • Organizational Affiliation

    Division of Biochemistry, University of Glasgow, Glasgow, G12 8QQ, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PHOTOSYNTHETIC REACTION CENTERA [auth H]260Cereibacter sphaeroidesMutation(s): 0 
Gene Names: PUFQLMX
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
PHOTOSYNTHETIC REACTION CENTERB [auth L]281Cereibacter sphaeroidesMutation(s): 0 
Gene Names: PUFQLMX
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
PHOTOSYNTHETIC REACTION CENTERC [auth M]307Cereibacter sphaeroidesMutation(s): 1 
Gene Names: PUFQLMX
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 7 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
CDL
Query on CDL

Download Ideal Coordinates CCD File 
M
CARDIOLIPIN
C81 H156 O17 P2
XVTUQDWPJJBEHJ-KZCWQMDCSA-L
BCL
Query on BCL

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D [auth L],
E [auth L],
F [auth L],
H [auth M]
BACTERIOCHLOROPHYLL A
C55 H74 Mg N4 O6
DSJXIQQMORJERS-AGGZHOMASA-M
BPH
Query on BPH

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I [auth M],
J [auth M]
BACTERIOPHEOPHYTIN A
C55 H76 N4 O6
KWOZSBGNAHVCKG-SZQBJALDSA-N
U10
Query on U10

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G [auth L]UBIQUINONE-10
C59 H90 O4
ACTIUHUUMQJHFO-UPTCCGCDSA-N
SPN
Query on SPN

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L [auth M]SPEROIDENONE
C41 H70 O2
GWQAMGYOEYXWJF-YCDPMLDASA-N
FE2
Query on FE2

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K [auth M]FE (II) ION
Fe
CWYNVVGOOAEACU-UHFFFAOYSA-N
CL
Query on CL

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N [auth M]CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.186 
  • R-Value Work: 0.169 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 142.05α = 90
b = 142.05β = 90
c = 186.81γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1999-12-13
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-12-19
    Changes: Advisory, Data collection, Derived calculations
  • Version 1.4: 2024-05-01
    Changes: Advisory, Data collection, Database references, Derived calculations, Other, Refinement description