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Yorodumi- PDB-8q48: Outward-facing, closed proteoliposome complex I at 2.5 A. Initial... -
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Open data
- Basic information
Basic information
| Entry | Database: PDB / ID: 8q48 | |||||||||
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| Title | Outward-facing, closed proteoliposome complex I at 2.5 A. Initially purified in LMNG. | |||||||||
|  Components | 
 | |||||||||
|  Keywords | MEMBRANE PROTEIN / Complex I / Oxidoreductase / Proteoliposomes / Membrane-bound / metabolism | |||||||||
| Function / homology |  Function and homology information Complex I biogenesis / Mitochondrial protein import / RHOG GTPase cycle / ubiquinone biosynthetic process / Respiratory electron transport / cellular response to oxygen levels / mitochondrial large ribosomal subunit binding / gliogenesis / neural precursor cell proliferation / [2Fe-2S] cluster assembly ...Complex I biogenesis / Mitochondrial protein import / RHOG GTPase cycle / ubiquinone biosynthetic process / Respiratory electron transport / cellular response to oxygen levels / mitochondrial large ribosomal subunit binding / gliogenesis / neural precursor cell proliferation / [2Fe-2S] cluster assembly / oxygen sensor activity / Neutrophil degranulation / NADH dehydrogenase activity / Mitochondrial protein degradation / acyl binding / ubiquinone binding / electron transport coupled proton transport / mitochondrial ATP synthesis coupled electron transport / acyl carrier activity / NADH:ubiquinone reductase (H+-translocating) / mitochondrial respiratory chain complex I assembly / mitochondrial electron transport, NADH to ubiquinone / respiratory chain complex I / response to cAMP / NADH dehydrogenase (ubiquinone) activity / quinone binding / ATP synthesis coupled electron transport / neurogenesis / reactive oxygen species metabolic process / aerobic respiration / fatty acid binding / respiratory electron transport chain / electron transport chain / circadian rhythm / brain development / mitochondrial membrane / mitochondrial intermembrane space / 2 iron, 2 sulfur cluster binding / NAD binding / fatty acid biosynthetic process / FMN binding / 4 iron, 4 sulfur cluster binding / oxidoreductase activity / mitochondrial inner membrane / mitochondrial matrix / negative regulation of DNA-templated transcription / apoptotic process / protein-containing complex binding / mitochondrion / nucleoplasm / metal ion binding / cytoplasm Similarity search - Function | |||||||||
| Biological species |  | |||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.5 Å | |||||||||
|  Authors | Grba, D.N. / Hirst, J. | |||||||||
| Funding support |  United Kingdom, 2items 
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|  Citation |  Journal: Science / Year: 2024 Title: Molecular mechanism of the ischemia-induced regulatory switch in mammalian complex I. Authors: Daniel N Grba / John J Wright / Zhan Yin / William Fisher / Judy Hirst /  Abstract: Respiratory complex I is an efficient driver for oxidative phosphorylation in mammalian mitochondria, but its uncontrolled catalysis under challenging conditions leads to oxidative stress and ...Respiratory complex I is an efficient driver for oxidative phosphorylation in mammalian mitochondria, but its uncontrolled catalysis under challenging conditions leads to oxidative stress and cellular damage. Ischemic conditions switch complex I from rapid, reversible catalysis into a dormant state that protects upon reoxygenation, but the molecular basis for the switch is unknown. We combined precise biochemical definition of complex I catalysis with high-resolution cryo-electron microscopy structures in the phospholipid bilayer of coupled vesicles to reveal the mechanism of the transition into the dormant state, modulated by membrane interactions. By implementing a versatile membrane system to unite structure and function, attributing catalytic and regulatory properties to specific structural states, we define how a conformational switch in complex I controls its physiological roles. | |||||||||
| History | 
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- Structure visualization
Structure visualization
| Structure viewer | Molecule:  Molmil  Jmol/JSmol | 
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- Downloads & links
Downloads & links
- Download
Download
| PDBx/mmCIF format |  8q48.cif.gz | 1.6 MB | Display |  PDBx/mmCIF format | 
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| PDB format |  pdb8q48.ent.gz | 1.3 MB | Display |  PDB format | 
| PDBx/mmJSON format |  8q48.json.gz | Tree view |  PDBx/mmJSON format | |
| Others |  Other downloads | 
-Validation report
| Summary document |  8q48_validation.pdf.gz | 4.1 MB | Display |  wwPDB validaton report | 
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| Full document |  8q48_full_validation.pdf.gz | 4.3 MB | Display | |
| Data in XML |  8q48_validation.xml.gz | 243.1 KB | Display | |
| Data in CIF |  8q48_validation.cif.gz | 354.7 KB | Display | |
| Arichive directory |  https://data.pdbj.org/pub/pdb/validation_reports/q4/8q48  ftp://data.pdbj.org/pub/pdb/validation_reports/q4/8q48 | HTTPS FTP | 
-Related structure data
| Related structure data |  18141MC  8q0aC  8q0fC  8q0jC  8q0mC  8q0oC  8q0qC  8q1pC  8q1uC  8q1yC  8q25C  8q45C  8q46C  8q47C  8q49C  8q4aC C: citing same article ( M: map data used to model this data | 
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| Similar structure data | Similarity search - Function & homology  F&H Search | 
- Links
Links
- Assembly
Assembly
| Deposited unit |  
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| 1 | 
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- Components
Components
-NADH-ubiquinone oxidoreductase chain  ... , 7 types, 7 molecules AHJKLMN      
| #1: Protein | Mass: 13086.531 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   References: UniProt: Q7JAS9, NADH:ubiquinone reductase (H+-translocating) | 
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| #8: Protein | Mass: 35716.785 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
| #10: Protein | Mass: 19110.488 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   References: UniProt: P03924, NADH:ubiquinone reductase (H+-translocating) | 
| #11: Protein | Mass: 10828.195 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   References: UniProt: P03902, NADH:ubiquinone reductase (H+-translocating) | 
| #12: Protein | Mass: 68355.930 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   References: UniProt: P03920, NADH:ubiquinone reductase (H+-translocating) | 
| #13: Protein | Mass: 52158.758 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   References: UniProt: P03910, NADH:ubiquinone reductase (H+-translocating) | 
| #14: Protein | Mass: 39302.941 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   References: UniProt: P03892, NADH:ubiquinone reductase (H+-translocating) | 
-NADH dehydrogenase [ubiquinone] iron-sulfur protein  ... , 7 types, 7 molecules BCDIQRe      
| #2: Protein | Mass: 23802.926 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   References: UniProt: P42026, NADH:ubiquinone reductase (H+-translocating) | 
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| #3: Protein | Mass: 30323.445 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   References: UniProt: P23709, NADH:ubiquinone reductase (H+-translocating) | 
| #4: Protein | Mass: 52678.547 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   References: UniProt: P17694, NADH:ubiquinone reductase (H+-translocating) | 
| #9: Protein | Mass: 23926.400 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   References: UniProt: P42028, NADH:ubiquinone reductase (H+-translocating) | 
| #17: Protein | Mass: 19841.555 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
| #18: Protein | Mass: 13433.194 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
| #30: Protein | Mass: 12694.671 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
-NADH dehydrogenase [ubiquinone] flavoprotein  ... , 3 types, 3 molecules EFs  
| #5: Protein | Mass: 27341.496 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   References: UniProt: P04394, NADH:ubiquinone reductase (H+-translocating), NADH dehydrogenase | 
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| #6: Protein | Mass: 50718.777 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   References: UniProt: P25708, NADH:ubiquinone reductase (H+-translocating), NADH dehydrogenase | 
| #44: Protein | Mass: 11874.492 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
-Protein , 2 types, 3 molecules GTU  
| #7: Protein | Mass: 79532.219 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   References: UniProt: P15690, NADH:ubiquinone reductase (H+-translocating) | 
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| #20: Protein | Mass: 17421.340 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural)   | 
-NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit  ... , 12 types, 12 molecules OPSVWXYZabqr           
| #15: Protein | Mass: 39330.984 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
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| #16: Protein | Mass: 42913.430 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
| #19: Protein | Mass: 11097.824 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
| #21: Protein | Mass: 13334.608 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
| #22: Protein | Mass: 15083.544 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
| #23: Protein | Mass: 20124.133 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
| #24: Protein | Mass: 14814.058 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
| #25: Protein | Mass: 16694.395 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
| #26: Protein | Mass: 8117.445 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
| #27: Protein | Mass: 9399.887 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
| #42: Protein | Mass: 17157.547 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
| #43: Protein | Mass: 12737.620 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
-NADH dehydrogenase [ubiquinone] 1 subunit  ... , 2 types, 2 molecules cd 
| #28: Protein | Mass: 8796.211 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
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| #29: Protein | Mass: 14159.332 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
-NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit  ... , 11 types, 11 molecules fghijklmnop          
| #31: Protein | Mass: 6978.148 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
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| #32: Protein | Mass: 17594.945 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
| #33: Protein | Mass: 21624.135 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
| #34: Protein | Mass: 15592.122 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
| #35: Protein | Mass: 12298.858 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
| #36: Protein | Mass: 11160.705 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
| #37: Protein | Mass: 21678.459 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
| #38: Protein | Mass: 15248.297 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
| #39: Protein | Mass: 21827.889 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
| #40: Protein | Mass: 16428.846 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
| #41: Protein | Mass: 21000.900 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural)   | 
-Non-polymers , 17 types, 1213 molecules 
































| #45: Chemical | ChemComp-PC1 / #46: Chemical | ChemComp-3PE / #47: Chemical | ChemComp-PLC / #48: Chemical | ChemComp-SF4 / #49: Chemical | ChemComp-U10 / | #50: Chemical | #51: Chemical | ChemComp-FMN / | #52: Chemical | ChemComp-K / | #53: Chemical | ChemComp-CDL / #54: Chemical | #55: Chemical | ChemComp-DGT / | #56: Chemical | ChemComp-MG / | #57: Chemical | ChemComp-NDP / | #58: Chemical | #59: Chemical | ChemComp-CHD / | #60: Chemical | ChemComp-MYR / | #61: Water | ChemComp-HOH / |  | 
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-Details
| Has ligand of interest | N | 
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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 | 
- Sample preparation
Sample preparation
| Component | Name: Complex I from Bos taurus reconstituted into proteoliposome. Type: COMPLEX Details: Complex I from Bos taurus, purified as prepared in LMNG, and reconstituted into proteoliposomes. Entity ID: #1-#44 / Source: NATURAL | |||||||||||||||
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| Molecular weight | Value: 1.09 MDa / Experimental value: NO | |||||||||||||||
| Source (natural) | Organism:  | |||||||||||||||
| Buffer solution | pH: 7.5 | |||||||||||||||
| Buffer component | 
 | |||||||||||||||
| Specimen | Conc.: 0.2 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES Details: Complex I proteoliposomes on a graphene-oxide coated gold grid with even liposome distribution. | |||||||||||||||
| Vitrification | Instrument: FEI VITROBOT MARK III / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 277 K Details: Sample was incubated on grid for 30 s before plunge freezing | 
- 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 / Nominal magnification: 81000 X / Nominal defocus max: 2300 nm / Nominal defocus min: 900 nm / Cs: 2.7 mm / C2 aperture diameter: 70 µm | 
| Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER | 
| Image recording | Average exposure time: 2.67 sec. / Electron dose: 45.4 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of grids imaged: 1  / Num. of real images: 27014 Details: The data were collected with aberration-free image shift (AFIS). | 
| EM imaging optics | Energyfilter name: GIF Bioquantum / Energyfilter slit width: 20 eV | 
| Image scans | Width: 5760 / Height: 4092 | 
- Processing
Processing
| EM software | 
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||
| Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 2.5 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 183021 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||
| Atomic model building | Protocol: OTHER / Space: REAL | ||||||||||||||||||||||||||||||||||||||||
| Atomic model building | PDB-ID: 7QSN Accession code: 7QSN / Source name: PDB / Type: experimental model | ||||||||||||||||||||||||||||||||||||||||
| Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||||||||||||||||||
| Displacement parameters | Biso mean: 51.5 Å2 | ||||||||||||||||||||||||||||||||||||||||
| Refine LS restraints | 
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