3BCC

STIGMATELLIN AND ANTIMYCIN BOUND CYTOCHROME BC1 COMPLEX FROM CHICKEN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.70 Å
  • R-Value Free: 0.321 
  • R-Value Work: 0.289 
  • R-Value Observed: 0.289 

Starting Model: experimental
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This is version 1.6 of the entry. See complete history


Literature

Electron transfer by domain movement in cytochrome bc1.

Zhang, Z.Huang, L.Shulmeister, V.M.Chi, Y.I.Kim, K.K.Hung, L.W.Crofts, A.R.Berry, E.A.Kim, S.H.

(1998) Nature 392: 677-684

  • DOI: https://doi.org/10.1038/33612
  • Primary Citation of Related Structures:  
    1BCC, 2BCC, 3BCC, 3H1H, 3H1I, 3H1J

  • PubMed Abstract: 

    The cytochrome bc1 is one of the three major respiratory enzyme complexes residing in the inner mitochondrial membrane. Cytochrome bc1 transfers electrons from ubiquinol to cytochrome c and uses the energy thus released to form an electrochemical gradient across the inner membrane. Our X-ray crystal structures of the complex from chicken, cow and rabbit in both the presence and absence of inhibitors of quinone oxidation, reveal two different locations for the extrinsic domain of one component of the enzyme, an iron-sulphur protein. One location is close enough to the supposed quinol oxidation site to allow reduction of the Fe-S protein by ubiquinol. The other site is close enough to cytochrome c1 to allow oxidation of the Fe-S protein by the cytochrome. As neither location will allow both reactions to proceed at a suitable rate, the reaction mechanism must involve movement of the extrinsic domain of the Fe-S component in order to shuttle electrons from ubiquinol to cytochrome c1. Such a mechanism has not previously been observed in redox protein complexes.


  • Organizational Affiliation

    E. O. Lawrence Berkeley National Laboratory, University of California, 94720, USA.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
UBIQUINOL CYTOCHROME C OXIDOREDUCTASE446Gallus gallusMutation(s): 0 
EC: 1.10.2.2
UniProt
Find proteins for P31800 (Bos taurus)
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
UBIQUINOL CYTOCHROME C OXIDOREDUCTASE422Gallus gallusMutation(s): 0 
EC: 1.10.2.2
UniProt
Find proteins for P23004 (Bos taurus)
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
UBIQUINOL CYTOCHROME C OXIDOREDUCTASE380Gallus gallusMutation(s): 0 
EC: 1.10.2.2
UniProt
Find proteins for P18946 (Gallus gallus)
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
UBIQUINOL CYTOCHROME C OXIDOREDUCTASE241Gallus gallusMutation(s): 0 
EC: 1.10.2.2
UniProt
Find proteins for P00125 (Bos taurus)
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
UBIQUINOL CYTOCHROME C OXIDOREDUCTASE196Gallus gallusMutation(s): 0 
EC: 1.10.2.2
UniProt
Find proteins for P13272 (Bos taurus)
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
UBIQUINOL CYTOCHROME C OXIDOREDUCTASE109Gallus gallusMutation(s): 0 
EC: 1.10.2.2
UniProt
Find proteins for P00129 (Bos taurus)
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
UBIQUINOL CYTOCHROME C OXIDOREDUCTASE81Gallus gallusMutation(s): 0 
EC: 1.10.2.2
UniProt
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
UBIQUINOL CYTOCHROME C OXIDOREDUCTASE78Gallus gallusMutation(s): 0 
EC: 1.10.2.2
UniProt
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Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
UBIQUINOL CYTOCHROME C OXIDOREDUCTASE33Gallus gallusMutation(s): 0 
EC: 1.10.2.2
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Entity ID: 10
MoleculeChains Sequence LengthOrganismDetailsImage
UBIQUINOL CYTOCHROME C OXIDOREDUCTASE62Gallus gallusMutation(s): 0 
UniProt
Find proteins for P00130 (Bos taurus)
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.70 Å
  • R-Value Free: 0.321 
  • R-Value Work: 0.289 
  • R-Value Observed: 0.289 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 173.18α = 90
b = 179.73β = 90
c = 238.22γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
TFFCmodel building
CNSrefinement
TFFCphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1998-08-19
    Type: Initial release
  • Version 1.1: 2008-03-25
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2014-05-28
    Changes: Other
  • Version 1.4: 2018-04-25
    Changes: Data collection, Source and taxonomy
  • Version 1.5: 2023-08-09
    Changes: Database references, Derived calculations, Refinement description
  • Version 1.6: 2024-10-09
    Changes: Data collection, Structure summary