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Yorodumi- PDB-7zm8: CryoEM structure of mitochondrial complex I from Chaetomium therm... -
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Basic information
| Entry | Database: PDB / ID: 7zm8 | ||||||
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| Title | CryoEM structure of mitochondrial complex I from Chaetomium thermophilum (inhibited by DDM) - membrane arm | ||||||
Components |
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Keywords | OXIDOREDUCTASE / Proton transporter / Mitochondrial membrane protein / Complex | ||||||
| Function / homology | Function and homology informationNADH dehydrogenase complex / 5'-flap endonuclease activity / replication fork reversal / single-stranded DNA helicase activity / acyl binding / ubiquinone binding / electron transport coupled proton transport / acyl carrier activity / NADH:ubiquinone reductase (H+-translocating) / mitochondrial respiratory chain complex I assembly ...NADH dehydrogenase complex / 5'-flap endonuclease activity / replication fork reversal / single-stranded DNA helicase activity / acyl binding / ubiquinone binding / electron transport coupled proton 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 / NADH dehydrogenase (ubiquinone) activity / ATP synthesis coupled electron transport / aerobic respiration / electron transport chain / mitochondrial membrane / mitochondrial intermembrane space / 4 iron, 4 sulfur cluster binding / DNA helicase / mitochondrial inner membrane / DNA repair / mitochondrion / DNA binding / ATP binding / metal ion binding / nucleus / membrane Similarity search - Function | ||||||
| Biological species | Chaetomium thermophilum var. thermophilum DSM 1495 (fungus) | ||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.76 Å | ||||||
Authors | Laube, E. / Kuehlbrandt, W. | ||||||
| Funding support | Germany, 1items
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Citation | Journal: Sci Adv / Year: 2022Title: Conformational changes in mitochondrial complex I of the thermophilic eukaryote . Authors: Eike Laube / Jakob Meier-Credo / Julian D Langer / Werner Kühlbrandt / ![]() Abstract: Mitochondrial complex I is a redox-driven proton pump that generates proton-motive force across the inner mitochondrial membrane, powering oxidative phosphorylation and ATP synthesis in eukaryotes. ...Mitochondrial complex I is a redox-driven proton pump that generates proton-motive force across the inner mitochondrial membrane, powering oxidative phosphorylation and ATP synthesis in eukaryotes. We report the structure of complex I from the thermophilic fungus , determined by cryoEM up to 2.4-Å resolution. We show that the complex undergoes a transition between two conformations, which we refer to as state 1 and state 2. The conformational switch is manifest in a twisting movement of the peripheral arm relative to the membrane arm, but most notably in substantial rearrangements of the Q-binding cavity and the E-channel, resulting in a continuous aqueous passage from the E-channel to subunit ND5 at the far end of the membrane arm. The conformational changes in the complex interior resemble those reported for mammalian complex I, suggesting a highly conserved, universal mechanism of coupling electron transport to proton pumping. | ||||||
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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 | 7zm8.cif.gz | 862.7 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb7zm8.ent.gz | 679.6 KB | Display | PDB format |
| PDBx/mmJSON format | 7zm8.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 7zm8_validation.pdf.gz | 2.7 MB | Display | wwPDB validaton report |
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| Full document | 7zm8_full_validation.pdf.gz | 2.7 MB | Display | |
| Data in XML | 7zm8_validation.xml.gz | 112.7 KB | Display | |
| Data in CIF | 7zm8_validation.cif.gz | 171.5 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/zm/7zm8 ftp://data.pdbj.org/pub/pdb/validation_reports/zm/7zm8 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 14792MC ![]() 7zm7C ![]() 7zmbC ![]() 7zmeC ![]() 7zmgC ![]() 7zmhC 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 |
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Links
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Assembly
| Deposited unit | ![]()
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Components
-NADH-ubiquinone oxidoreductase chain ... , 6 types, 6 molecules 13456L
| #1: Protein | Mass: 41716.406 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 References: UniProt: G1DJA6, NADH:ubiquinone reductase (H+-translocating) |
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| #3: Protein | Mass: 16330.030 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 References: UniProt: G1DJ99, NADH:ubiquinone reductase (H+-translocating) |
| #4: Protein | Mass: 60810.309 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 References: UniProt: G1DJA7, NADH:ubiquinone reductase (H+-translocating) |
| #5: Protein | Mass: 75872.031 Da / Num. of mol.: 1 / Source method: isolated from a natural source Details: Discrepancy with annotated entry sequence. Probably wrong intron-exon boundaries. Amino acids added according to map density, genome sequence and MS data. Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 References: UniProt: G1DJA3, NADH:ubiquinone reductase (H+-translocating) |
| #6: Protein | Mass: 24819.291 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 References: UniProt: G1DJ96, NADH:ubiquinone reductase (H+-translocating) |
| #11: Protein | Mass: 9837.997 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 References: UniProt: G1DJA2, NADH:ubiquinone reductase (H+-translocating) |
-NADH dehydrogenase ... , 4 types, 4 molecules 28Wa
| #2: Protein | Mass: 64129.180 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 / References: UniProt: G1DJ98 |
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| #7: Protein | Mass: 10312.750 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 / References: UniProt: G0SAE9 |
| #16: Protein | Mass: 14039.227 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 / References: UniProt: G0SB83 |
| #18: Protein | Mass: 89210.109 Da / Num. of mol.: 1 / Source method: isolated from a natural source Details: Discrepancy with annotated entry sequence. Probably wrong intron-exon boundaries. Amino acids removed and added according to map density, genome sequence and MS data. Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 / References: UniProt: G0RXU4 |
-Protein , 13 types, 13 molecules 9DQRSUbcdgijn
| #8: Protein | Mass: 87142.328 Da / Num. of mol.: 1 / Source method: isolated from a natural source Details: Discrepancy with annotated entry sequence. Probably wrong intron-exon boundaries. One additional amino acid modelled according to map density and genome sequence. Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 / References: UniProt: G0SG48 |
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| #9: Protein | Mass: 9833.353 Da / Num. of mol.: 1 / Source method: isolated from a natural source Details: No entry (not annotated). Sequence modelled according to map density, genome sequence and MS data. Last five amino acids unknown and modelled as Poly-Ala Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus) |
| #12: Protein | Mass: 15593.649 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Details: ZMP covalently linked to Ser98. Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 / References: UniProt: G0SBG9 |
| #13: Protein | Mass: 11636.524 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 / References: UniProt: G0SAY0 |
| #14: Protein | Mass: 15847.807 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 / References: UniProt: G0SAN0, DNA helicase |
| #15: Protein | Mass: 21517.605 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 / References: UniProt: G0S0R3 |
| #19: Protein | Mass: 10823.453 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 / References: UniProt: G0S812 |
| #20: Protein | Mass: 11153.536 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 / References: UniProt: G0S681 |
| #21: Protein | Mass: 12514.257 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 / References: UniProt: G0SEZ1 |
| #23: Protein | Mass: 9076.461 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 / References: UniProt: G0RZZ2 |
| #24: Protein | Mass: 10857.294 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 / References: UniProt: G0S569 |
| #25: Protein | Mass: 8760.336 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 / References: UniProt: G0S5C8 |
| #26: Protein | Mass: 20824.342 Da / Num. of mol.: 1 / Source method: isolated from a natural source Details: Discrepancy with annotated entry sequence. Probably wrong intron-exon boundaries. Amino acids added and removed according to map density and genome sequence. Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 / References: UniProt: G0S086 |
-NADH-ubiquinone oxidoreductase-like ... , 2 types, 2 molecules JX
| #10: Protein | Mass: 21612.625 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 / References: UniProt: G0S2B3 |
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| #17: Protein | Mass: 21645.502 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)Strain: DSM 1495 / CBS 144.50 / IMI 039719 / References: UniProt: G0S0S8 |
-Protein/peptide / Sugars , 2 types, 15 molecules e

| #22: Protein/peptide | Mass: 5278.150 Da / Num. of mol.: 1 / Source method: isolated from a natural source Details: No entry (not annotated). Sequence modelled according to map density, genome sequence and MS data. Source: (natural) Chaetomium thermophilum var. thermophilum DSM 1495 (fungus) |
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| #29: Sugar | ChemComp-LMT / |
-Non-polymers , 5 types, 625 molecules 








| #27: Chemical | ChemComp-3PE / #28: Chemical | ChemComp-PC1 / #30: Chemical | ChemComp-CDL / #31: Chemical | ChemComp-ZMP / | #32: Water | ChemComp-HOH / | |
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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 |
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Sample preparation
| Component | Name: Mitochondrial NADH:ubiquinone oxidoreductase in DDM / Type: COMPLEX / Entity ID: #1-#26 / Source: NATURAL | ||||||||||||||||||||
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| Molecular weight | Value: 0.97 MDa / Experimental value: NO | ||||||||||||||||||||
| Source (natural) | Organism: Chaetomium thermophilum var. thermophilum DSM 1495 (fungus) | ||||||||||||||||||||
| Buffer solution | pH: 7.4 | ||||||||||||||||||||
| Buffer component |
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| Specimen | Conc.: 3.6 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-1.2/1.3 | ||||||||||||||||||||
| 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 magnification: 105000 X / Nominal defocus max: 3500 nm / Nominal defocus min: 1000 nm / Cs: 2.7 mm / C2 aperture diameter: 70 µm |
| Specimen holder | Cryogen: NITROGEN |
| Image recording | Average exposure time: 2.11 sec. / Electron dose: 45 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 1996 |
| EM imaging optics | Energyfilter name: GIF Bioquantum / Energyfilter slit width: 30 eV |
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Processing
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| CTF correction | Type: NONE | ||||||||||||||||||||||||||||||||||||||||
| Particle selection | Num. of particles selected: 126638 | ||||||||||||||||||||||||||||||||||||||||
| Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 2.76 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 37767 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||
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Chaetomium thermophilum var. thermophilum DSM 1495 (fungus)
Germany, 1items
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