2BS2

QUINOL:FUMARATE REDUCTASE FROM WOLINELLA SUCCINOGENES


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.78 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.229 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Evidence for Transmembrane Proton Transfer in a Dihaem-Containing Membrane Protein Complex.

Madej, M.G.Nasiri, H.R.Hilgendorff, N.S.Schwalbe, H.Lancaster, C.R.D.

(2006) Embo J. 25: 4963

  • DOI: 10.1038/sj.emboj.7601361

  • PubMed Abstract: 
  • Membrane protein complexes can support both the generation and utilisation of a transmembrane electrochemical proton potential ('proton-motive force'), either by transmembrane electron transfer coupled to protolytic reactions on opposite sides of the ...

    Membrane protein complexes can support both the generation and utilisation of a transmembrane electrochemical proton potential ('proton-motive force'), either by transmembrane electron transfer coupled to protolytic reactions on opposite sides of the membrane or by transmembrane proton transfer. Here we provide the first evidence that both of these mechanisms are combined in the case of a specific respiratory membrane protein complex, the dihaem-containing quinol:fumarate reductase (QFR) of Wolinella succinogenes, so as to facilitate transmembrane electron transfer by transmembrane proton transfer. We also demonstrate the non-functionality of this novel transmembrane proton transfer pathway ('E-pathway') in a variant QFR where a key glutamate residue has been replaced. The 'E-pathway', discussed on the basis of the 1.78-Angstrom-resolution crystal structure of QFR, can be concluded to be essential also for the viability of pathogenic epsilon-proteobacteria such as Helicobacter pylori and is possibly relevant to proton transfer in other dihaem-containing membrane proteins, performing very different physiological functions.


    Related Citations: 
    • Wolinella Succinogenes Quinol:Fumarate Reductase -2.2 Angstrom Resolution Crystal Structure and the E-Pathway Hypothesis of Coupled Transmembrane Proton and Electron Transfer
      Lancaster, C.R.D.
      (2002) Biochim.Biophys.Acta 1565: 215
    • Structure of Fumarate Reductase from Wolinella Succinogenes at 2.2 Angstroms Resolution
      Lancaster, C.R.D.,Kroeger, A.,Auer, M.,Michel, H.
      (1999) Nature 402: 377
    • Essential Role of Glu-C66 for Menaquinol Oxidation Indicates Transmembrane Electrochemical Potential Generation by Wolinella Succinogenes Fumarate Reductase
      Lancaster, C.R.D.,Gross, R.,Haas, A.,Ritter, M.,Maentele, W.,Simon, J.,Kroeger, A.
      (2000) Proc.Natl.Acad.Sci.USA 97: 13051
    • A Third Crystal Form of Wolinella Succinogenes Quinol:Fumarate Reductase Reveals Domain Closure at the Site of Fumarate Reduction
      Lancaster, C.R.D.,Gross, R.,Simon, J.
      (2001) Eur.J.Biochem. 268: 1820


    Organizational Affiliation

    Department of Molecular Membrane Biology, Max Planck Institute of Biophysics, Frankfurt am Main, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
QUINOL-FUMARATE REDUCTASE FLAVOPROTEIN SUBUNIT A
A, D
660Wolinella succinogenes (strain ATCC 29543 / DSM 1740 / LMG 7466 / NCTC 11488 / FDC 602W)Gene Names: frdA
EC: 1.3.5.4
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Electron Transport Chain Complexes: Complex II
Protein: 
Fumarate Reductase Complex
Find proteins for P17412 (Wolinella succinogenes (strain ATCC 29543 / DSM 1740 / LMG 7466 / NCTC 11488 / FDC 602W))
Go to UniProtKB:  P17412
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
QUINOL-FUMARATE REDUCTASE IRON-SULFUR SUBUNIT B
B, E
241Wolinella succinogenes (strain ATCC 29543 / DSM 1740 / LMG 7466 / NCTC 11488 / FDC 602W)Gene Names: frdB
EC: 1.3.5.1
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Electron Transport Chain Complexes: Complex II
Protein: 
Fumarate Reductase Complex
Find proteins for P17596 (Wolinella succinogenes (strain ATCC 29543 / DSM 1740 / LMG 7466 / NCTC 11488 / FDC 602W))
Go to UniProtKB:  P17596
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
QUINOL-FUMARATE REDUCTASE DIHEME CYTOCHROME B SUBUNIT C
C, F
256Wolinella succinogenes (strain ATCC 29543 / DSM 1740 / LMG 7466 / NCTC 11488 / FDC 602W)Gene Names: frdC
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Electron Transport Chain Complexes: Complex II
Protein: 
Fumarate Reductase Complex
Find proteins for P17413 (Wolinella succinogenes (strain ATCC 29543 / DSM 1740 / LMG 7466 / NCTC 11488 / FDC 602W))
Go to UniProtKB:  P17413
Small Molecules
Ligands 8 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SF4
Query on SF4

Download SDF File 
Download CCD File 
B, E
IRON/SULFUR CLUSTER
Fe4 S4
LJBDFODJNLIPKO-VKOJMFJBAC
 Ligand Interaction
F3S
Query on F3S

Download SDF File 
Download CCD File 
B, E
FE3-S4 CLUSTER
Fe3 S4
FCXHZBQOKRZXKS-MZMDZPPWAW
 Ligand Interaction
NA
Query on NA

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Download CCD File 
A, D
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
FAD
Query on FAD

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Download CCD File 
A, D
FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
 Ligand Interaction
FES
Query on FES

Download SDF File 
Download CCD File 
B, E
FE2/S2 (INORGANIC) CLUSTER
Fe2 S2
NIXDOXVAJZFRNF-UHFFFAOYSA-N
 Ligand Interaction
HEM
Query on HEM

Download SDF File 
Download CCD File 
C, F
PROTOPORPHYRIN IX CONTAINING FE
HEME
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
LMT
Query on LMT

Download SDF File 
Download CCD File 
C, F
DODECYL-BETA-D-MALTOSIDE
C24 H46 O11
NLEBIOOXCVAHBD-QKMCSOCLSA-N
 Ligand Interaction
FUM
Query on FUM

Download SDF File 
Download CCD File 
A, D
FUMARIC ACID
C4 H4 O4
VZCYOOQTPOCHFL-OWOJBTEDSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.78 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.229 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 85.104α = 90.00
b = 188.766β = 104.47
c = 117.817γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
CNSrefinement
DENZOdata reduction
CNSphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2005-05-14 
  • Released Date: 2006-10-25 
  • Deposition Author(s): Lancaster, C.R.D.
  • This entry supersedes: 1QLA

Revision History 

  • Version 1.0: 2006-10-25
    Type: Initial release
  • Version 1.1: 2012-07-18
    Type: Atomic model, Derived calculations, Non-polymer description, Other, Structure summary, Version format compliance