1H1O

Acidithiobacillus ferrooxidans cytochrome c4 structure supports a complex-induced tuning of electron transfer


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.13 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.239 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

The Structure of Acidithiobacillus Ferrooxidans C(4)-Cytochrome. A Model for Complex-Induced Electron Transfer Tuning

Abergel, C.Nitschke, W.Malarte, G.Bruschi, M.Claverie, J.-M.Guidici-Orticoni, M.-T.

(2003) Structure 11: 547


  • PubMed Abstract: 
  • The study of electron transfer between the copper protein rusticyanin (RCy) and the c(4)-cytochrome CYC(41) of the acidophilic bacterium Acidithiobacillus ferrooxidans has evidenced a remarkable decrease of RCy's redox potential upon complex formatio ...

    The study of electron transfer between the copper protein rusticyanin (RCy) and the c(4)-cytochrome CYC(41) of the acidophilic bacterium Acidithiobacillus ferrooxidans has evidenced a remarkable decrease of RCy's redox potential upon complex formation. The structure of the CYC(41) obtained at 2.2 A resolution highlighted a specific glutamate residue (E121) involved in zinc binding as potentially playing a central role in this effect, required for the electron transfer to occur. EPR and stopped-flow experiments confirmed the strong inhibitory effect of divalent cations on CYC(41):RCy complex formation. A docking analysis of the CYC(41) and RCy structure allows us to propose a detailed model for the complex-induced tuning of electron transfer in agreement with our experimental data, which could be representative of other copper proteins involved in electron transfer.


    Organizational Affiliation

    Information Génomique et Structurale, UPR 2589, Institut de Biologie Structurale et Microbiologie, 31 Chemin Joseph Aiguier, 13402 20, Marseille cedex, France. chantal.abergel@igs.cnrs-mrs.fr




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CYTOCHROME C-552
A, B
183Acidithiobacillus ferrooxidansGene Names: cyc1
Find proteins for P74917 (Acidithiobacillus ferrooxidans)
Go to UniProtKB:  P74917
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

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A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

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Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

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Download CCD File 
B
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
HEM
Query on HEM

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Download CCD File 
A, B
PROTOPORPHYRIN IX CONTAINING FE
HEME
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.13 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.239 
  • Space Group: P 64 2 2
Unit Cell:
Length (Å)Angle (°)
a = 100.049α = 90.00
b = 100.049β = 90.00
c = 149.668γ = 120.00
Software Package:
Software NamePurpose
SCALAdata scaling
SOLVEphasing
MOSFLMdata reduction
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-07-17
    Type: Initial release
  • Version 1.1: 2011-10-12
    Type: Derived calculations, Non-polymer description, Other, Version format compliance