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Open data
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Basic information
| Entry | Database: PDB / ID: 5luf | ||||||
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| Title | Cryo-EM of bovine respirasome | ||||||
Components |
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Keywords | OXIDOREDUCTASE / Mitochondria / supercomplex / respiratory chain | ||||||
| Function / homology | Function and homology informationComplex III assembly / Complex IV assembly / TP53 Regulates Metabolic Genes / respiratory chain complex IV assembly / subthalamus development / pons development / Cytoprotection by HMOX1 / mitochondrial respirasome assembly / cerebellar Purkinje cell layer development / pyramidal neuron development ...Complex III assembly / Complex IV assembly / TP53 Regulates Metabolic Genes / respiratory chain complex IV assembly / subthalamus development / pons development / Cytoprotection by HMOX1 / mitochondrial respirasome assembly / cerebellar Purkinje cell layer development / pyramidal neuron development / Respiratory electron transport / respiratory chain complex IV / thalamus development / respiratory chain complex / cytochrome-c oxidase / respiratory chain complex III / oxidative phosphorylation / quinol-cytochrome-c reductase / mitochondrial electron transport, cytochrome c to oxygen / quinol-cytochrome-c reductase activity / cytochrome-c oxidase activity / mitochondrial electron transport, ubiquinol to cytochrome c / Mitochondrial protein degradation / hypothalamus development / midbrain development / ubiquinone binding / ATP synthesis coupled electron transport / enzyme regulator activity / aerobic respiration / central nervous system development / respiratory electron transport chain / hippocampus development / mitochondrial membrane / metalloendopeptidase activity / 2 iron, 2 sulfur cluster binding / oxidoreductase activity / mitochondrial inner membrane / copper ion binding / heme binding / mitochondrion / proteolysis / metal ion binding / membrane Similarity search - Function | ||||||
| Biological species | ![]() | ||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 9.1 Å | ||||||
Authors | Sousa, J.S. / Mills, D.J. / Vonck, J. / Kuehlbrandt, W. | ||||||
Citation | Journal: Elife / Year: 2016Title: Functional asymmetry and electron flow in the bovine respirasome. Authors: Joana S Sousa / Deryck J Mills / Janet Vonck / Werner Kühlbrandt / ![]() Abstract: Respirasomes are macromolecular assemblies of the respiratory chain complexes I, III and IV in the inner mitochondrial membrane. We determined the structure of supercomplex IIIIIV from bovine heart ...Respirasomes are macromolecular assemblies of the respiratory chain complexes I, III and IV in the inner mitochondrial membrane. We determined the structure of supercomplex IIIIIV from bovine heart mitochondria by cryo-EM at 9 Å resolution. Most protein-protein contacts between complex I, III and IV in the membrane are mediated by supernumerary subunits. Of the two Rieske iron-sulfur cluster domains in the complex III dimer, one is resolved, indicating that this domain is immobile and unable to transfer electrons. The central position of the active complex III monomer between complex I and IV in the respirasome is optimal for accepting reduced quinone from complex I over a short diffusion distance of 11 nm, and delivering reduced cytochrome to complex IV. The functional asymmetry of complex III provides strong evidence for directed electron flow from complex I to complex IV through the active complex III monomer in the mammalian supercomplex. | ||||||
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Structure visualization
| Movie |
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| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 5luf.cif.gz | 1.7 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb5luf.ent.gz | 1.4 MB | Display | PDB format |
| PDBx/mmJSON format | 5luf.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 5luf_validation.pdf.gz | 2.2 MB | Display | wwPDB validaton report |
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| Full document | 5luf_full_validation.pdf.gz | 2.5 MB | Display | |
| Data in XML | 5luf_validation.xml.gz | 235 KB | Display | |
| Data in CIF | 5luf_validation.cif.gz | 389.6 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/lu/5luf ftp://data.pdbj.org/pub/pdb/validation_reports/lu/5luf | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 4107MC ![]() 4108C ![]() 4109C M: map data used to model this data C: citing same article ( |
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| Similar structure data |
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Links
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Assembly
| Deposited unit | ![]()
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| 1 |
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Components
-Cytochrome b-c1 complex subunit ... , 9 types, 18 molecules clmneqfrgshtiujvkw
| #1: Protein | Mass: 49266.254 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #2: Protein | Mass: 46575.469 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #5: Protein | Mass: 21640.580 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #6: Protein | Mass: 13371.190 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #7: Protein | Mass: 9606.027 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #8: Protein | Mass: 9189.116 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #9: Protein | Mass: 7964.259 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #10: Protein | Mass: 7209.311 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #11: Protein | Mass: 6370.390 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() |
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+Protein , 28 types, 30 molecules bodpABCDEFGHIJKLMNOPQSTVWXYaUZ
-Cytochrome c oxidase subunit ... , 13 types, 13 molecules xyz1234567890
| #12: Protein | Mass: 57065.844 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #13: Protein | Mass: 26040.393 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #14: Protein | Mass: 29943.600 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #15: Protein | Mass: 17179.646 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #16: Protein | Mass: 12453.081 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #17: Protein | Mass: 10684.038 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #18: Protein | Mass: 9452.687 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #19: Protein | Mass: 10039.244 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #20: Protein | Mass: 8494.982 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #21: Protein | Mass: 6682.726 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #22: Protein | Mass: 6365.217 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #23: Protein/peptide | Mass: 5449.396 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #24: Protein/peptide | Mass: 4967.756 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Protein/peptide , 1 types, 1 molecules R
| #42: Protein/peptide | Mass: 4017.944 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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-Non-polymers , 8 types, 22 molecules 














| #52: Chemical | ChemComp-HEM / #53: Chemical | #54: Chemical | #55: Chemical | #56: Chemical | ChemComp-MG / | #57: Chemical | #58: Chemical | ChemComp-ZN / | #59: Chemical | ChemComp-SF4 / |
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-Details
| Has protein modification | Y |
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-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
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| EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
| Component | Name: Respirasome / Type: COMPLEX / Details: supercomplex of complex I, III and IV / Entity ID: #1-#51 / Source: NATURAL |
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| Molecular weight | Value: 1.7 MDa / Experimental value: NO |
| Source (natural) | Organism: ![]() |
| Buffer solution | pH: 7.7 |
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Specimen support | Grid material: COPPER / Grid mesh size: 400 divisions/in. / Grid type: Quantifoil R2/2 |
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 90 % / Chamber temperature: 283 K / Details: 10 s blotting |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Tecnai Polara / Image courtesy: FEI Company |
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| Microscopy | Model: FEI POLARA 300 |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 59000 X / Calibrated magnification: 57797 X / Nominal defocus max: 4300 nm / Nominal defocus min: 1300 nm / Calibrated defocus min: 1300 nm / Calibrated defocus max: 4300 nm / Cs: 2.2 mm / Alignment procedure: COMA FREE |
| Specimen holder | Cryogen: NITROGEN / Specimen holder model: OTHER |
| Image recording | Average exposure time: 1.5 sec. / Electron dose: 70 e/Å2 / Detector mode: INTEGRATING / Film or detector model: OTHER / Num. of real images: 3592 / Details: Falcon III |
| Image scans | Sampling size: 14 µm / Width: 4096 / Height: 4096 / Movie frames/image: 46 / Used frames/image: 2-46 |
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Processing
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||
| Particle selection | Num. of particles selected: 156519 / Details: particles were selected manually | ||||||||||||||||||||
| Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||
| 3D reconstruction | Resolution: 9.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 17093 / Num. of class averages: 1 / Symmetry type: POINT | ||||||||||||||||||||
| Atomic model building | Protocol: RIGID BODY FIT / Space: REAL |
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