1GU2

Crystal structure of oxidized cytochrome c'' from Methylophilus methylotrophus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.19 Å
  • R-Value Free: 0.186 

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This is version 1.2 of the entry. See complete history


Literature

Structural Evidence for a Proton Transfer Pathway Coupled with Haem Reduction of Cytochrome C" from Methylophilus Methylotrophus.

Enguita, F.J.Pohl, E.Turner, D.L.Santos, H.Carrondo, M.A.

(2006) J Biol Inorg Chem 11: 189

  • DOI: https://doi.org/10.1007/s00775-005-0065-6
  • Primary Citation of Related Structures:  
    1GU2, 1OAE

  • PubMed Abstract: 

    The crystal structures of the oxidized and reduced forms of cytochrome c" from Methylophilus methylotrophus were solved from X-ray synchrotron data to atomic resolution. The overall fold of the molecule in the two redox states is very similar and is comparable to that of the oxygen-binding protein from the purple phototrophic bacterium Rhodobacter sphaeroides. However, significant modifications occur near the haem group, in particular the detachment from axial binding of His95 observed upon reduction as well as the adoption of different conformations of some protonatable residues that form a possible proton path from the haem pocket to the protein surface. These changes are associated with the previously well characterized redox-Bohr behaviour of this protein. Furthermore they provide a model for one of the presently proposed mechanisms of proton translocation in the much more complex protein cytochrome c oxidase.


  • Organizational Affiliation

    Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, P.O. Box 127, 2781-901 Oeiras, Portugal.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
CYTOCHROME C''
A, B
124Methylophilus methylotrophus W3A1Mutation(s): 0 
UniProt
Find proteins for Q9RQB9 (Methylophilus methylotrophus)
Explore Q9RQB9 
Go to UniProtKB:  Q9RQB9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9RQB9
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.19 Å
  • R-Value Free: 0.186 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.537α = 90
b = 74.115β = 90
c = 78.388γ = 90
Software Package:
Software NamePurpose
SHELXL-97refinement
MOSFLMdata reduction
SCALAdata scaling
SHELXphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-01-16
    Type: Initial release
  • Version 1.1: 2019-05-22
    Changes: Data collection, Derived calculations, Refinement description
  • Version 1.2: 2019-07-24
    Changes: Data collection