1QCR

CRYSTAL STRUCTURE OF BOVINE MITOCHONDRIAL CYTOCHROME BC1 COMPLEX, ALPHA CARBON ATOMS ONLY


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.375 
  • R-Value Work: 0.300 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of the cytochrome bc1 complex from bovine heart mitochondria.

Xia, D.Yu, C.A.Kim, H.Xia, J.Z.Kachurin, A.M.Zhang, L.Yu, L.Deisenhofer, J.

(1997) Science 277: 60-66

  • Also Cited By: 1SQV

  • PubMed Abstract: 
  • On the basis of x-ray diffraction data to a resolution of 2.9 angstroms, atomic models of most protein components of the bovine cytochrome bc1 complex were built, including core 1, core 2, cytochrome b, subunit 6, subunit 7, a carboxyl-terminal fragm ...

    On the basis of x-ray diffraction data to a resolution of 2.9 angstroms, atomic models of most protein components of the bovine cytochrome bc1 complex were built, including core 1, core 2, cytochrome b, subunit 6, subunit 7, a carboxyl-terminal fragment of cytochrome c1, and an amino-terminal fragment of the iron-sulfur protein. The positions of the four iron centers within the bc1 complex and the binding sites of the two specific respiratory inhibitors antimycin A and myxothiazol were identified. The membrane-spanning region of each bc1 complex monomer consists of 13 transmembrane helices, eight of which belong to cytochrome b. Closely interacting monomers are arranged as symmetric dimers and form cavities through which the inhibitor binding pockets can be accessed. The proteins core 1 and core 2 are structurally similar to each other and consist of two domains of roughly equal size and identical folding topology.


    Related Citations: 
    • Erratum. Crystal Structure of the Cytochrome Bc1 Complex from Bovine Heart Mitochondria
      Xia, D.,Yu, C.A.,Kim, H.,Xia, J.Z.,Kachurin, A.M.,Zhang, L.,Yu, L.,Deisenhofer, J.
      (1997) Science 278: 2037


    Organizational Affiliation

    Howard Hughes Medical Institute and Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75235, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
UBIQUINOL CYTOCHROME C OXIDOREDUCTASE
A
446Bos taurusGene Names: UQCRC1
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Electron Transport Chain Complexes: Complex III (Cytochrome bc1)
Protein: 
Cytochrome bc1
Find proteins for P31800 (Bos taurus)
Go to Gene View: UQCRC1
Go to UniProtKB:  P31800
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
UBIQUINOL CYTOCHROME C OXIDOREDUCTASE
B
423Bos taurusGene Names: UQCRC2
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Electron Transport Chain Complexes: Complex III (Cytochrome bc1)
Protein: 
Cytochrome bc1
Find proteins for P23004 (Bos taurus)
Go to Gene View: UQCRC2
Go to UniProtKB:  P23004
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
UBIQUINOL CYTOCHROME C OXIDOREDUCTASE
C
378Bos taurusGene Names: MT-CYB (COB, CYTB, MTCYB)
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Electron Transport Chain Complexes: Complex III (Cytochrome bc1)
Protein: 
Cytochrome bc1
Find proteins for P00157 (Bos taurus)
Go to Gene View: MT-CYB
Go to UniProtKB:  P00157
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
UBIQUINOL CYTOCHROME C OXIDOREDUCTASE
D
75Bos taurusGene Names: CYC1
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Electron Transport Chain Complexes: Complex III (Cytochrome bc1)
Protein: 
Cytochrome bc1
Find proteins for P00125 (Bos taurus)
Go to Gene View: CYC1
Go to UniProtKB:  P00125
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
UBIQUINOL CYTOCHROME C OXIDOREDUCTASE
E
196Bos taurusGene Names: UQCRFS1
EC: 1.10.2.2
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Electron Transport Chain Complexes: Complex III (Cytochrome bc1)
Protein: 
Cytochrome bc1
Find proteins for P13272 (Bos taurus)
Go to Gene View: UQCRFS1
Go to UniProtKB:  P13272
Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
UBIQUINOL CYTOCHROME C OXIDOREDUCTASE
F
103Bos taurusGene Names: UQCRB
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Electron Transport Chain Complexes: Complex III (Cytochrome bc1)
Protein: 
Cytochrome bc1
Find proteins for P00129 (Bos taurus)
Go to Gene View: UQCRB
Go to UniProtKB:  P00129
Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
UBIQUINOL CYTOCHROME C OXIDOREDUCTASE
G
70Bos taurusGene Names: UQCRQ
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Electron Transport Chain Complexes: Complex III (Cytochrome bc1)
Protein: 
Cytochrome bc1
Find proteins for P13271 (Bos taurus)
Go to Gene View: UQCRQ
Go to UniProtKB:  P13271
Entity ID: 8
MoleculeChainsSequence LengthOrganismDetails
UBIQUINOL CYTOCHROME C OXIDOREDUCTASE
H
60Bos taurusGene Names: UQCRH
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Electron Transport Chain Complexes: Complex III (Cytochrome bc1)
Protein: 
Cytochrome bc1
Find proteins for P00126 (Bos taurus)
Go to Gene View: UQCRH
Go to UniProtKB:  P00126
Entity ID: 9
MoleculeChainsSequence LengthOrganismDetails
UBIQUINOL CYTOCHROME C OXIDOREDUCTASE
I
28Bos taurusGene Names: UQCRFS1
EC: 1.10.2.2
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Electron Transport Chain Complexes: Complex III (Cytochrome bc1)
Protein: 
Cytochrome bc1
Find proteins for P13272 (Bos taurus)
Go to Gene View: UQCRFS1
Go to UniProtKB:  P13272
Entity ID: 10
MoleculeChainsSequence LengthOrganismDetails
UBIQUINOL CYTOCHROME C OXIDOREDUCTASE
J
59Bos taurusGene Names: UQCR10
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Electron Transport Chain Complexes: Complex III (Cytochrome bc1)
Protein: 
Cytochrome bc1
Find proteins for P00130 (Bos taurus)
Go to Gene View: UQCR10
Go to UniProtKB:  P00130
Entity ID: 11
MoleculeChainsSequence LengthOrganismDetails
UBIQUINOL CYTOCHROME C OXIDOREDUCTASE
K
45Bos taurusGene Names: UQCR11 (UQCR)
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Electron Transport Chain Complexes: Complex III (Cytochrome bc1)
Protein: 
Cytochrome bc1
Find proteins for P07552 (Bos taurus)
Go to Gene View: UQCR11
Go to UniProtKB:  P07552
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEM
Query on HEM

Download SDF File 
Download CCD File 
C
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: 2.7 Å
  • R-Value Free: 0.375 
  • R-Value Work: 0.300 
  • Space Group: I 41 2 2
Unit Cell:
Length (Å)Angle (°)
a = 153.500α = 90.00
b = 153.500β = 90.00
c = 597.700γ = 90.00
Software Package:
Software NamePurpose
X-PLORphasing
X-PLORmodel building
X-PLORrefinement
SCALEPACKdata scaling
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-10-14
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance