+ Open data
Open data
- Basic information
Basic information
| Entry | Database: PDB / ID: 6zkf | |||||||||||||||||||||||||||
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| Title | Complex I during turnover, open3 | |||||||||||||||||||||||||||
|  Components | 
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|  Keywords | ELECTRON TRANSPORT / complex / respiration / NADH / proton pump / mitochondria / iron-sulphur cluster / oxidoreductase / membrane protein | |||||||||||||||||||||||||||
| Function / homology |  Function and homology information :  / :  / NADH dehydrogenase activity / acyl binding / ubiquinone binding / electron transport coupled proton transport / acyl carrier activity / NADH:ubiquinone reductase (H+-translocating) / apoptotic mitochondrial changes / mitochondrial respiratory chain complex I assembly ...:  / :  / NADH dehydrogenase activity / acyl binding / ubiquinone binding / electron transport coupled proton transport / acyl carrier activity / NADH:ubiquinone reductase (H+-translocating) / apoptotic mitochondrial changes / mitochondrial respiratory chain complex I assembly / mitochondrial electron transport, NADH to ubiquinone / respiratory chain complex I / membrane => GO:0016020 / NADH dehydrogenase (ubiquinone) activity / ATP metabolic process / ATP synthesis coupled electron transport / reactive oxygen species metabolic process / regulation of mitochondrial membrane potential / respiratory electron transport chain / electron transport chain / circadian rhythm / mitochondrial intermembrane space / 2 iron, 2 sulfur cluster binding / NAD binding / FMN binding / 4 iron, 4 sulfur cluster binding / response to oxidative stress / mitochondrial inner membrane / mitochondrial matrix / protein-containing complex binding / mitochondrion / metal ion binding Similarity search - Function | |||||||||||||||||||||||||||
| Biological species |   Ovis aries (sheep) | |||||||||||||||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.8 Å | |||||||||||||||||||||||||||
|  Authors | Kampjut, D. / Sazanov, L.A. | |||||||||||||||||||||||||||
| Funding support | European Union, 2items 
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|  Citation |  Journal: Science / Year: 2020 Title: The coupling mechanism of mammalian respiratory complex I. Authors: Domen Kampjut / Leonid A Sazanov /  Abstract: Mitochondrial complex I couples NADH:ubiquinone oxidoreduction to proton pumping by an unknown mechanism. Here, we present cryo-electron microscopy structures of ovine complex I in five different ...Mitochondrial complex I couples NADH:ubiquinone oxidoreduction to proton pumping by an unknown mechanism. Here, we present cryo-electron microscopy structures of ovine complex I in five different conditions, including turnover, at resolutions up to 2.3 to 2.5 angstroms. Resolved water molecules allowed us to experimentally define the proton translocation pathways. Quinone binds at three positions along the quinone cavity, as does the inhibitor rotenone that also binds within subunit ND4. Dramatic conformational changes around the quinone cavity couple the redox reaction to proton translocation during open-to-closed state transitions of the enzyme. In the induced deactive state, the open conformation is arrested by the ND6 subunit. We propose a detailed molecular coupling mechanism of complex I, which is an unexpected combination of conformational changes and electrostatic interactions. | |||||||||||||||||||||||||||
| History | 
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- Structure visualization
Structure visualization
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| Structure viewer | Molecule:  Molmil  Jmol/JSmol | 
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| PDBx/mmCIF format |  6zkf.cif.gz | 1.7 MB | Display |  PDBx/mmCIF format | 
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| PDB format |  pdb6zkf.ent.gz | 1.3 MB | Display |  PDB format | 
| PDBx/mmJSON format |  6zkf.json.gz | Tree view |  PDBx/mmJSON format | |
| Others |  Other downloads | 
-Validation report
| Summary document |  6zkf_validation.pdf.gz | 2.1 MB | Display |  wwPDB validaton report | 
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| Full document |  6zkf_full_validation.pdf.gz | 2.1 MB | Display | |
| Data in XML |  6zkf_validation.xml.gz | 154.8 KB | Display | |
| Data in CIF |  6zkf_validation.cif.gz | 234.4 KB | Display | |
| Arichive directory |  https://data.pdbj.org/pub/pdb/validation_reports/zk/6zkf  ftp://data.pdbj.org/pub/pdb/validation_reports/zk/6zkf | HTTPS FTP | 
-Related structure data
| Related structure data |  11247MC  6zk9C  6zkaC  6zkbC  6zkcC  6zkdC  6zkeC  6zkgC  6zkhC  6zkiC  6zkjC  6zkkC  6zklC  6zkmC  6zknC  6zkoC  6zkpC  6zkqC  6zkrC  6zksC  6zktC  6zkuC  6zkvC M: map data used to model this data C: citing same article ( | 
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| Similar structure data | 
- Links
Links
- Assembly
Assembly
| Deposited unit |  
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| 1 | 
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- Components
Components
-NADH dehydrogenase [ubiquinone]  ... , 8 types, 8 molecules 1Yceikov       
| #1: Protein | Mass: 50687.750 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) References: UniProt: W5PUX0, NADH:ubiquinone reductase (H+-translocating) | 
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| #18: Protein | Mass: 20139.209 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5PYA5 | 
| #22: Protein | Mass: 19381.994 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5PE07 | 
| #24: Protein | Mass: 11097.824 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5QAH8 | 
| #28: Protein | Mass: 17115.508 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: B9VGZ9 | 
| #29: Protein | Mass: 40557.148 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5QBF5 | 
| #33: Protein | Mass: 14431.655 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5P9Q8 | 
| #40: Protein | Mass: 21752.602 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5Q1B0 | 
-Mitochondrial complex I,  ... , 16 types, 16 molecules 2469VZabfhqrwxyz               
| #2: Protein | Mass: 27373.551 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5NRY1 | 
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| #4: Protein | Mass: 52661.453 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) | 
| #6: Protein | Mass: 24622.900 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) | 
| #7: Protein | Mass: 24496.121 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) | 
| #15: Protein | Mass: 14784.009 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5PAR2 | 
| #19: Protein | Mass: 20880.752 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) | 
| #20: Protein | Mass: 11916.529 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) | 
| #21: Protein | Mass: 13457.175 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) | 
| #25: Protein | Mass: 13287.505 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5PNX7 | 
| #27: Protein | Mass: 12701.613 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5P0I2 | 
| #35: Protein | Mass: 16766.461 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) | 
| #36: Protein | Mass: 15565.126 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5PZE3 | 
| #41: Protein | Mass: 17410.660 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5PWF1 | 
| #42: Protein | Mass: 8802.174 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) | 
| #43: Protein | Mass: 7075.305 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) | 
| #44: Protein | Mass: 8211.519 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) | 
-NADH:ubiquinone oxidoreductase core subunit  ... , 2 types, 2 molecules 35 
| #3: Protein | Mass: 79519.297 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5QB34 | 
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| #5: Protein | Mass: 30384.570 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5PB27 | 
-NADH-ubiquinone oxidoreductase chain  ... , 7 types, 7 molecules AHJKLMN      
| #8: Protein | Mass: 13106.520 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) References: UniProt: O78753, NADH:ubiquinone reductase (H+-translocating) | 
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| #9: Protein | Mass: 35884.902 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) References: UniProt: O78747, NADH:ubiquinone reductase (H+-translocating) | 
| #10: Protein | Mass: 19126.619 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) References: UniProt: O78757, NADH:ubiquinone reductase (H+-translocating) | 
| #11: Protein | Mass: 10868.237 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) References: UniProt: O78754, NADH:ubiquinone reductase (H+-translocating) | 
| #12: Protein | Mass: 68438.906 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) References: UniProt: O78756, NADH:ubiquinone reductase (H+-translocating) | 
| #13: Protein | Mass: 52086.742 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) References: UniProt: O78755, NADH:ubiquinone reductase (H+-translocating) | 
| #14: Protein | Mass: 39149.805 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) References: UniProt: O78748, NADH:ubiquinone reductase (H+-translocating) | 
-NADH:ubiquinone oxidoreductase subunit  ... , 10 types, 10 molecules Wdglmnpstu         
| #16: Protein | Mass: 21614.201 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5QHN8 | 
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| #23: Protein | Mass: 43025.590 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5PI58 | 
| #26: Protein | Mass: 16302.812 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5QC06 | 
| #30: Protein | Mass: 12605.594 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5QFF9 | 
| #31: Protein | Mass: 9325.851 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5NYM7 | 
| #32: Protein | Mass: 11146.679 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5Q5T4 | 
| #34: Protein | Mass: 15236.375 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5QF73 | 
| #37: Protein | Mass: 16413.807 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5P5V3 | 
| #38: Protein | Mass: 21779.910 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5PGA3 | 
| #39: Protein | Mass: 12226.770 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5PVD7 | 
-Protein , 1 types, 2 molecules Xj 
| #17: Protein | Mass: 17608.199 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural)    Ovis aries (sheep) / References: UniProt: W5NQT7 | 
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-Non-polymers , 14 types, 46 molecules 


























| #45: Chemical | ChemComp-SF4 / #46: Chemical | ChemComp-FMN / | #47: Chemical | ChemComp-NAI / | #48: Chemical | #49: Chemical | ChemComp-K / | #50: Chemical | ChemComp-3PE / #51: Chemical | ChemComp-PC1 / #52: Chemical | ChemComp-DCQ / | #53: Chemical | ChemComp-CDL / #54: Chemical | #55: Chemical | ChemComp-ZN / | #56: Chemical | ChemComp-NDP / | #57: Chemical | ChemComp-AMP / | #58: Chemical | ChemComp-MYR / |  | 
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-Details
| Has ligand of interest | N | 
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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 | 
- Sample preparation
Sample preparation
| Component | Name: Complex I during turnover, open3 / Type: COMPLEX / Entity ID: #1-#44 / Source: NATURAL | 
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| Molecular weight | Value: 1 MDa / Experimental value: YES | 
| Source (natural) | Organism:   Ovis aries (sheep) | 
| Buffer solution | pH: 7.4 | 
| Specimen | Conc.: 3 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | 
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K | 
- Electron microscopy imaging
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 / Cs: 2.7 mm | 
| Image recording | Electron dose: 100 e/Å2 / Detector mode: INTEGRATING / Film or detector model: FEI FALCON III (4k x 4k) | 
- Processing
Processing
| EM software | 
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 48396 / Symmetry type: POINT | ||||||||||||||||||||||||||||
| Atomic model building | B value: 50 / Protocol: FLEXIBLE FIT / Space: REAL / Target criteria: Correlation coefficient | ||||||||||||||||||||||||||||
| Atomic model building | PDB-ID: 5LNK Accession code: 5LNK / Source name: PDB / Type: experimental model | 
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