1SP3

Crystal structure of octaheme cytochrome c from Shewanella oneidensis


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.155 
  • R-Value Observed: 0.160 

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Ligand Structure Quality Assessment 


This is version 2.0 of the entry. See complete history


Literature

Octaheme tetrathionate reductase is a respiratory enzyme with novel heme ligation.

Mowat, C.G.Rothery, E.Miles, C.S.McIver, L.Doherty, M.K.Drewette, K.Taylor, P.Walkinshaw, M.D.Chapman, S.K.Reid, G.A.

(2004) Nat Struct Mol Biol 11: 1023-1024

  • DOI: 10.1038/nsmb827
  • Primary Citation of Related Structures:  
    1SP3

  • PubMed Abstract: 
  • We have isolated a soluble cytochrome from Shewanella oneidensis that contains eight covalently attached heme groups and determined its crystal structure. One of these hemes exhibits novel ligation of the iron atom by the epsilon-amino group of a lysine residue, despite its attachment via a typical CXXCH motif ...

    We have isolated a soluble cytochrome from Shewanella oneidensis that contains eight covalently attached heme groups and determined its crystal structure. One of these hemes exhibits novel ligation of the iron atom by the epsilon-amino group of a lysine residue, despite its attachment via a typical CXXCH motif. This heme is most likely the active site for tetrathionate reduction, a reaction catalyzed efficiently by this enzyme.


    Organizational Affiliation

    Institute of Cell and Molecular Biology, School of Biological Sciences, University of Edinburgh, Mayfield Road, Edinburgh EH9 3JR, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
cytochrome c, putativeA443Shewanella oneidensis MR-1Mutation(s): 0 
Gene Names: SO4144 (tigr locus)otrSO_4144
UniProt
Find proteins for Q8E9W8 (Shewanella oneidensis (strain MR-1))
Explore Q8E9W8 
Go to UniProtKB:  Q8E9W8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8E9W8
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.155 
  • R-Value Observed: 0.160 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 40.59α = 90
b = 61.767β = 90
c = 185.237γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
SOLVEphasing

Structure Validation

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Ligand Structure Quality Assessment 



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-09-21
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Source and taxonomy, Version format compliance
  • Version 2.0: 2021-03-03
    Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Non-polymer description, Structure summary