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- PDB-8ca4: Cryo-EM structure NDUFS4 knockout complex I from Mus musculus hea... -
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Open data
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Basic information
Entry | Database: PDB / ID: 8ca4 | ||||||||||||
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Title | Cryo-EM structure NDUFS4 knockout complex I from Mus musculus heart (Class 2 N-domain). | ||||||||||||
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![]() | OXIDOREDUCTASE / NADH ubiquinone oxidoreductase / Complex I | ||||||||||||
Function / homology | ![]() Complex I biogenesis / Respiratory electron transport / blastocyst hatching / Mitochondrial protein degradation / cardiac muscle tissue development / cellular respiration / NADH:ubiquinone reductase (H+-translocating) / apoptotic mitochondrial changes / mitochondrial ATP synthesis coupled electron transport / : ...Complex I biogenesis / Respiratory electron transport / blastocyst hatching / Mitochondrial protein degradation / cardiac muscle tissue development / cellular respiration / NADH:ubiquinone reductase (H+-translocating) / apoptotic mitochondrial changes / mitochondrial ATP synthesis coupled electron transport / : / mitochondrial electron transport, NADH to ubiquinone / mitochondrial respiratory chain complex I assembly / proton motive force-driven mitochondrial ATP synthesis / NADH dehydrogenase (ubiquinone) activity / ATP metabolic process / aerobic respiration / reactive oxygen species metabolic process / regulation of mitochondrial membrane potential / mitochondrial intermembrane space / 2 iron, 2 sulfur cluster binding / NAD binding / FMN binding / myelin sheath / nervous system development / 4 iron, 4 sulfur cluster binding / mitochondrial inner membrane / electron transfer activity / mitochondrion / metal ion binding / cytosol Similarity search - Function | ||||||||||||
Biological species | ![]() ![]() | ||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.25 Å | ||||||||||||
![]() | Yin, Z. / Bridges, H.R. / Agip, A.N.A. / Hirst, J. | ||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Structural insights into respiratory complex I deficiency and assembly from the mitochondrial disease-related ndufs4 mouse. Authors: Zhan Yin / Ahmed-Noor A Agip / Hannah R Bridges / Judy Hirst / ![]() ![]() ![]() Abstract: Respiratory complex I (NADH:ubiquinone oxidoreductase) is essential for cellular energy production and NAD homeostasis. Complex I mutations cause neuromuscular, mitochondrial diseases, such as Leigh ...Respiratory complex I (NADH:ubiquinone oxidoreductase) is essential for cellular energy production and NAD homeostasis. Complex I mutations cause neuromuscular, mitochondrial diseases, such as Leigh Syndrome, but their molecular-level consequences remain poorly understood. Here, we use a popular complex I-linked mitochondrial disease model, the ndufs4 mouse, to define the structural, biochemical, and functional consequences of the absence of subunit NDUFS4. Cryo-EM analyses of the complex I from ndufs4 mouse hearts revealed a loose association of the NADH-dehydrogenase module, and discrete classes containing either assembly factor NDUFAF2 or subunit NDUFS6. Subunit NDUFA12, which replaces its paralogue NDUFAF2 in mature complex I, is absent from all classes, compounding the deletion of NDUFS4 and preventing maturation of an NDUFS4-free enzyme. We propose that NDUFAF2 recruits the NADH-dehydrogenase module during assembly of the complex. Taken together, the findings provide new molecular-level understanding of the ndufs4 mouse model and complex I-linked mitochondrial disease. | ||||||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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PDBx/mmCIF format | ![]() | 296 KB | Display | ![]() |
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PDB format | ![]() | 228.4 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 16517MC ![]() 8c2sC ![]() 8ca1C ![]() 8ca3C ![]() 8ca5C C: citing same article ( M: map data used to model this data |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
-NADH dehydrogenase [ubiquinone] flavoprotein ... , 3 types, 3 molecules EFs
#1: Protein | Mass: 27318.336 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() References: UniProt: Q9D6J6, NADH:ubiquinone reductase (H+-translocating) |
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#2: Protein | Mass: 50904.152 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() References: UniProt: Q91YT0, NADH:ubiquinone reductase (H+-translocating) |
#5: Protein | Mass: 11833.504 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-Protein , 2 types, 2 molecules GS
#3: Protein | Mass: 79866.688 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() References: UniProt: Q91VD9, NADH:ubiquinone reductase (H+-translocating) |
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#4: Protein | Mass: 10932.675 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-Non-polymers , 3 types, 6 molecules ![](data/chem/img/FES.gif)
![](data/chem/img/SF4.gif)
![](data/chem/img/FMN.gif)
![](data/chem/img/SF4.gif)
![](data/chem/img/FMN.gif)
#6: Chemical | #7: Chemical | #8: Chemical | ChemComp-FMN / | |
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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 |
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Sample preparation
Component | Name: Very long-chain specific acyl-CoA dehydrogenase, mitochondrial Type: COMPLEX / Entity ID: #1 / Source: NATURAL | |||||||||||||||||||||||||
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Source (natural) | Organism: ![]() ![]() | |||||||||||||||||||||||||
Buffer solution | pH: 7.14 / Details: pH was corrected at room temperature ~22 C | |||||||||||||||||||||||||
Buffer component |
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Specimen | Conc.: 3.82 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | |||||||||||||||||||||||||
Specimen support | Grid material: GOLD / Grid type: UltrAuFoil | |||||||||||||||||||||||||
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: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2900 nm / Nominal defocus min: 1500 nm |
Image recording | Electron dose: 45 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
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Processing
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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3D reconstruction | Resolution: 3.25 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 50914 / Symmetry type: POINT |