1BE3 image
Deposition Date 1998-05-19
Release Date 1999-01-13
Last Version Date 2024-10-16
Entry Detail
PDB ID:
1BE3
Keywords:
ELECTRON TRANSPORT
Title:
CYTOCHROME BC1 COMPLEX FROM BOVINE
Biological Source:
Source Organism:
Bos taurus (Taxon ID: 9913)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
3.00 Å
R-Value Free:
0.32
R-Value Work:
0.26
Space Group:
P 65 2 2
1BE3 validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CYTOCHROME BC1 COMPLEX
Gene (Uniprot):UQCRC1
Chain IDs:A
Chain Length:446
Number of Molecules:1
Biological Source:Bos taurus
UniProt ID:P31800 Pfam ID:PF00675, PF05193 EC:7.1.1.8
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CYTOCHROME BC1 COMPLEX
Gene (Uniprot):UQCRC2
Chain IDs:B
Chain Length:439
Number of Molecules:1
Biological Source:Bos taurus
UniProt ID:P23004 Pfam ID:PF00675, PF05193
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CYTOCHROME BC1 COMPLEX
Gene (Uniprot):MT-CYB
Chain IDs:C
Chain Length:379
Number of Molecules:1
Biological Source:Bos taurus
UniProt ID:P00157 Pfam ID:PF00033, PF00032
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CYTOCHROME BC1 COMPLEX
Gene (Uniprot):CYC1
Chain IDs:D
Chain Length:241
Number of Molecules:1
Biological Source:Bos taurus
UniProt ID:P00125 Pfam ID:PF02167
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CYTOCHROME BC1 COMPLEX
Gene (Uniprot):UQCRFS1
Chain IDs:E
Chain Length:196
Number of Molecules:1
Biological Source:Bos taurus
UniProt ID:P13272 Pfam ID:PF02921, PF00355, PF09165
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CYTOCHROME BC1 COMPLEX
Gene (Uniprot):UQCRB
Chain IDs:F
Chain Length:110
Number of Molecules:1
Biological Source:Bos taurus
UniProt ID:P00129 Pfam ID:PF02271
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CYTOCHROME BC1 COMPLEX
Gene (Uniprot):UQCRQ
Chain IDs:G
Chain Length:81
Number of Molecules:1
Biological Source:Bos taurus
UniProt ID:P13271 Pfam ID:PF02939
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CYTOCHROME BC1 COMPLEX
Gene (Uniprot):UQCRH
Chain IDs:H
Chain Length:78
Number of Molecules:1
Biological Source:Bos taurus
UniProt ID:P00126 Pfam ID:PF02320
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CYTOCHROME BC1 COMPLEX
Gene (Uniprot):UQCRFS1
Chain IDs:I
Chain Length:78
Number of Molecules:1
Biological Source:Bos taurus
UniProt ID:P13272 Pfam ID:PF02921, PF00355, PF09165
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CYTOCHROME BC1 COMPLEX
Gene (Uniprot):UQCR10
Chain IDs:J
Chain Length:62
Number of Molecules:1
Biological Source:Bos taurus
UniProt ID:P00130 Pfam ID:PF05365
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CYTOCHROME BC1 COMPLEX
Gene (Uniprot):UQCR11
Chain IDs:K
Chain Length:56
Number of Molecules:1
Biological Source:Bos taurus
UniProt ID:P07552 Pfam ID:PF08997
Ligand Molecules
FES
HEC
HEM
Primary Citation
Complete structure of the 11-subunit bovine mitochondrial cytochrome bc1 complex.
Science 281 64 71 (1998)
PMID: 9651245 DOI: 10.1126/science.281.5373.64

Abstact

Mitochondrial cytochrome bc1 complex performs two functions: It is a respiratory multienzyme complex and it recognizes a mitochondrial targeting presequence. Refined crystal structures of the 11-subunit bc1 complex from bovine heart reveal full views of this bifunctional enzyme. The "Rieske" iron-sulfur protein subunit shows significant conformational changes in different crystal forms, suggesting a new electron transport mechanism of the enzyme. The mitochondrial targeting presequence of the "Rieske" protein (subunit 9) is lodged between the two "core" subunits at the matrix side of the complex. These "core" subunits are related to the matrix processing peptidase, and the structure unveils how mitochondrial targeting presequences are recognized.

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Disease

Primary Citation of related structures
1BE3