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Open data
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Basic information
| Entry | Database: PDB / ID: 8c8q | ||||||
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| Title | Cytochrome c oxidase from Schizosaccharomyces pombe | ||||||
Components |
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Keywords | MEMBRANE PROTEIN / Electron transfer / proton transfer / respiration | ||||||
| Function / homology | Function and homology informationMitochondrial protein degradation / mitochondrial respiratory chain complex IV assembly / respiratory chain complex IV / respiratory chain complex / cytochrome-c oxidase / mitochondrial electron transport, cytochrome c to oxygen / cytochrome-c oxidase activity / ATP synthesis coupled electron transport / enzyme regulator activity / proton transmembrane transport ...Mitochondrial protein degradation / mitochondrial respiratory chain complex IV assembly / respiratory chain complex IV / respiratory chain complex / cytochrome-c oxidase / mitochondrial electron transport, cytochrome c to oxygen / cytochrome-c oxidase activity / ATP synthesis coupled electron transport / enzyme regulator activity / proton transmembrane transport / aerobic respiration / respiratory electron transport chain / mitochondrial membrane / oxidoreductase activity / mitochondrial inner membrane / copper ion binding / heme binding / mitochondrion / metal ion binding Similarity search - Function | ||||||
| Biological species | ![]() | ||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.36 Å | ||||||
Authors | Moe, A. / Adelroth, P. / Brzezinski, P. / Nasvik Ojemyr, L. | ||||||
| Funding support | Sweden, 1items
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Citation | Journal: Commun Chem / Year: 2023Title: Cryo-EM structure and function of S. pombe complex IV with bound respiratory supercomplex factor. Authors: Agnes Moe / Pia Ädelroth / Peter Brzezinski / Linda Näsvik Öjemyr / ![]() Abstract: Fission yeast Schizosaccharomyces pombe serves as model organism for studying higher eukaryotes. We combined the use of cryo-EM and spectroscopy to investigate the structure and function of affinity ...Fission yeast Schizosaccharomyces pombe serves as model organism for studying higher eukaryotes. We combined the use of cryo-EM and spectroscopy to investigate the structure and function of affinity purified respiratory complex IV (CIV) from S. pombe. The reaction sequence of the reduced enzyme with O proceeds over a time scale of µs-ms, similar to that of the mammalian CIV. The cryo-EM structure of CIV revealed eleven subunits as well as a bound hypoxia-induced gene 1 (Hig1) domain of respiratory supercomplex factor 2 (Rcf2). These results suggest that binding of Rcf2 does not require the presence of a CIII-CIV supercomplex, i.e. Rcf2 is a component of CIV. An AlphaFold-Multimer model suggests that the Hig1 domains of both Rcf1 and Rcf2 bind at the same site of CIV suggesting that their binding is mutually exclusive. Furthermore, the differential functional effect of Rcf1 or Rcf2 is presumably caused by interactions of CIV with their different non-Hig1 domain parts. | ||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 8c8q.cif.gz | 387.6 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb8c8q.ent.gz | 302.9 KB | Display | PDB format |
| PDBx/mmJSON format | 8c8q.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 8c8q_validation.pdf.gz | 1.9 MB | Display | wwPDB validaton report |
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| Full document | 8c8q_full_validation.pdf.gz | 2 MB | Display | |
| Data in XML | 8c8q_validation.xml.gz | 63.1 KB | Display | |
| Data in CIF | 8c8q_validation.cif.gz | 92.8 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/c8/8c8q ftp://data.pdbj.org/pub/pdb/validation_reports/c8/8c8q | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 16491MC M: map data used to model this data C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
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Assembly
| Deposited unit | ![]()
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| 1 |
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Components
-Cytochrome c oxidase subunit ... , 9 types, 9 molecules ABCDFGIJK
| #1: Protein | Mass: 59607.680 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #2: Protein | Mass: 28139.258 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #3: Protein | Mass: 30432.148 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #4: Protein | Mass: 17624.094 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #6: Protein | Mass: 15958.173 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #7: Protein | Mass: 6741.878 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #9: Protein | Mass: 6652.764 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #10: Protein | Mass: 10275.406 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #11: Protein | Mass: 15224.184 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Cytochrome c oxidase polypeptide ... , 2 types, 2 molecules EH
| #5: Protein | Mass: 24933.271 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: cox5, SPCC338.10c / Production host: ![]() |
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| #8: Protein | Mass: 7512.846 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Protein / Protein/peptide , 2 types, 2 molecules LM
| #12: Protein | Mass: 27084.996 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #13: Protein/peptide | Mass: 2230.741 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Non-polymers , 7 types, 11 molecules 












| #14: Chemical | | #15: Chemical | ChemComp-CU / | #16: Chemical | ChemComp-MG / | #17: Chemical | ChemComp-CA / | #18: Chemical | ChemComp-PEF / #19: Chemical | ChemComp-CUA / | #20: Chemical | ChemComp-ZN / | |
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-Details
| Has ligand of interest | Y |
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| Has protein modification | Y |
-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: Cytochrome c oxidase / Type: COMPLEX / Entity ID: #1-#13 / Source: NATURAL |
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| Molecular weight | Value: 0.246 MDa / Experimental value: NO |
| Source (natural) | Organism: ![]() |
| Buffer solution | pH: 8 |
| Specimen | Conc.: 4 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Specimen support | Grid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: C-flat-2/2 |
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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| Microscopy | Model: FEI TITAN KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2600 nm / Nominal defocus min: 600 nm |
| Image recording | Electron dose: 49 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
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Processing
| Software | Name: PHENIX / Version: 1.20.1_4487: / Classification: refinement | ||||||||||||||||||||||||
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3D reconstruction | Resolution: 3.36 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 127659 / Symmetry type: POINT | ||||||||||||||||||||||||
| Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
| Displacement parameters | Biso mean: 76.41 Å2 | ||||||||||||||||||||||||
| Refine LS restraints |
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FIELD EMISSION GUN