+ Open data
Open data
- Basic information
Basic information
| Entry | Database: PDB / ID: 8pw7 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Title | A respirasome from murine liver | |||||||||
|  Components | 
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|  Keywords | MEMBRANE PROTEIN / Respiratory chain super complex / mammalian mitochondria | |||||||||
| Function / homology |  Function and homology information Complex IV assembly / response to D-galactosamine / Complex III assembly / TP53 Regulates Metabolic Genes / Mitochondrial protein import / response to injury involved in regulation of muscle adaptation / Protein lipoylation / Mitochondrial Fatty Acid Beta-Oxidation / Complex I biogenesis / RHOG GTPase cycle ...Complex IV assembly / response to D-galactosamine / Complex III assembly / TP53 Regulates Metabolic Genes / Mitochondrial protein import / response to injury involved in regulation of muscle adaptation / Protein lipoylation / Mitochondrial Fatty Acid Beta-Oxidation / Complex I biogenesis / RHOG GTPase cycle / respiratory chain complex IV assembly / response to mercury ion / subthalamus development / pons development / Cytoprotection by HMOX1 / Respiratory electron transport / protein insertion into mitochondrial inner membrane / response to cobalamin / cerebellar Purkinje cell layer development / aerobic electron transport chain / blastocyst hatching / mitochondrial respiratory chain complex III assembly / pyramidal neuron development / respiratory system process / response to alkaloid / respiratory chain complex IV / psychomotor behavior / cellular respiration / thalamus development / Mitochondrial protein degradation / cellular response to oxygen levels / response to light intensity / mesenchymal stem cell proliferation / respiratory chain complex / reproductive system development / mitochondrial [2Fe-2S] assembly complex / iron-sulfur cluster assembly complex / mitochondrial large ribosomal subunit binding / gliogenesis / cytochrome-c oxidase / mesenchymal stem cell differentiation / circulatory system development / respiratory chain complex III / oxidative phosphorylation / negative regulation of non-canonical NF-kappaB signal transduction / cardiac muscle tissue development / quinol-cytochrome-c reductase / mitochondrial electron transport, cytochrome c to oxygen / neural precursor cell proliferation / [2Fe-2S] cluster assembly / response to glucagon / adult walking behavior / oxygen sensor activity / positive regulation of mitochondrial membrane potential / response to hydroperoxide / quinol-cytochrome-c reductase activity / cytochrome-c oxidase activity / cellular response to glucocorticoid stimulus / stem cell division / response to copper ion / mitochondrial electron transport, ubiquinol to cytochrome c / NADH dehydrogenase activity / iron-sulfur cluster assembly / hypothalamus development / midbrain development / electron transport coupled proton transport / mitochondrial ATP synthesis coupled electron transport / dopamine metabolic process / NADH:ubiquinone reductase (H+-translocating) / adult behavior / positive regulation of ATP biosynthetic process / mitochondrial respiratory chain complex I assembly / mitochondrial electron transport, NADH to ubiquinone / proton motive force-driven mitochondrial ATP synthesis / response to electrical stimulus / respiratory chain complex I / positive regulation of execution phase of apoptosis / animal organ regeneration / response to hyperoxia / NADH dehydrogenase (ubiquinone) activity / response to cadmium ion / neuron development / quinone binding / cellular response to interferon-beta / ATP synthesis coupled electron transport / response to hormone / negative regulation of reactive oxygen species biosynthetic process / extrinsic apoptotic signaling pathway / cellular response to retinoic acid / tricarboxylic acid cycle / lactation / neurogenesis / Neutrophil degranulation / response to nutrient / visual perception / muscle contraction / reactive oxygen species metabolic process / aerobic respiration / cerebellum development / central nervous system development Similarity search - Function | |||||||||
| Biological species |   Mus musculus (house mouse) | |||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.5 Å | |||||||||
|  Authors | Vercellino, I. / Sazanov, L.A. | |||||||||
| Funding support | European Union, 1items 
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|  Citation |  Journal: Nat Struct Mol Biol / Year: 2024 Title: SCAF1 drives the compositional diversity of mammalian respirasomes. Authors: Irene Vercellino / Leonid A Sazanov /    Abstract: Supercomplexes of the respiratory chain are established constituents of the oxidative phosphorylation system, but their role in mammalian metabolism has been hotly debated. Although recent studies ...Supercomplexes of the respiratory chain are established constituents of the oxidative phosphorylation system, but their role in mammalian metabolism has been hotly debated. Although recent studies have shown that different tissues/organs are equipped with specific sets of supercomplexes, depending on their metabolic needs, the notion that supercomplexes have a role in the regulation of metabolism has been challenged. However, irrespective of the mechanistic conclusions, the composition of various high molecular weight supercomplexes remains uncertain. Here, using cryogenic electron microscopy, we demonstrate that mammalian (mouse) tissues contain three defined types of 'respirasome', supercomplexes made of CI, CIII and CIV. The stoichiometry and position of CIV differs in the three respirasomes, of which only one contains the supercomplex-associated factor SCAF1, whose involvement in respirasome formation has long been contended. Our structures confirm that the 'canonical' respirasome (the C-respirasome, CICIIICIV) does not contain SCAF1, which is instead associated to a different respirasome (the CS-respirasome), containing a second copy of CIV. We also identify an alternative respirasome (A-respirasome), with CIV bound to the 'back' of CI, instead of the 'toe'. This structural characterization of mouse mitochondrial supercomplexes allows us to hypothesize a mechanistic basis for their specific role in different metabolic conditions. #1:   Journal: Acta Crystallogr., Sect. D: Biol. Crystallogr. / Year: 2018 Title: Real-space refinement in PHENIX for cryo-EM and crystallography Authors: Afonine, P.V. / Adams, P.D. | |||||||||
| History | 
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- Structure visualization
Structure visualization
| Structure viewer | Molecule:  Molmil  Jmol/JSmol | 
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| PDBx/mmCIF format |  8pw7.cif.gz | 2.9 MB | Display |  PDBx/mmCIF format | 
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| PDB format |  pdb8pw7.ent.gz | Display |  PDB format | |
| PDBx/mmJSON format |  8pw7.json.gz | Tree view |  PDBx/mmJSON format | |
| Others |  Other downloads | 
-Validation report
| Summary document |  8pw7_validation.pdf.gz | 4.2 MB | Display |  wwPDB validaton report | 
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| Full document |  8pw7_full_validation.pdf.gz | 4.3 MB | Display | |
| Data in XML |  8pw7_validation.xml.gz | 339.3 KB | Display | |
| Data in CIF |  8pw7_validation.cif.gz | 521.5 KB | Display | |
| Arichive directory |  https://data.pdbj.org/pub/pdb/validation_reports/pw/8pw7  ftp://data.pdbj.org/pub/pdb/validation_reports/pw/8pw7 | HTTPS FTP | 
-Related structure data
| Related structure data |  17991MC  8pw5C  8pw6C  8rgpC  8rgqC  8rgrC  8rgtC 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 | 
- Links
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- Assembly
Assembly
| Deposited unit |  
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| 1 | 
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- Components
Components
+Cytochrome c oxidase subunit  ... , 13 types, 13 molecules nopqrstuvxywz            
+Cytochrome b-c1 complex subunit  ... , 8 types, 17 molecules ALBMEPTFQGRHSJUKV                
+Protein , 4 types, 7 molecules CNDO3T1U1      
+NADH dehydrogenase [ubiquinone] iron-sulfur protein  ... , 7 types, 7 molecules 6C1D19Q17e1      
+NADH dehydrogenase [ubiquinone] flavoprotein  ... , 3 types, 3 molecules 21s1  
+NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit  ... , 12 types, 12 molecules P1S1V1W1q1r1O1X1Y1Z1a1b1           
+NADH-ubiquinone oxidoreductase chain  ... , 7 types, 7 molecules A1H1J1K1L1M1N1      
+NADH dehydrogenase [ubiquinone] 1 subunit  ... , 2 types, 2 molecules c1d1 
+NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit  ... , 11 types, 11 molecules f1g1h1i1j1k1l1m1n1o1p1          
+Non-polymers , 19 types, 90 molecules 




































+Details
-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY | 
|---|---|
| EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction | 
- Sample preparation
Sample preparation
| Component | Name: A respirasome from murine liver / Type: COMPLEX / Entity ID: #1-#67 / Source: NATURAL | ||||||||||||||||||||
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| Molecular weight | Value: 1.7 MDa / Experimental value: NO | ||||||||||||||||||||
| Source (natural) | Organism:   Mus musculus (house mouse) / Strain: CD1 / Organ: liver / Organelle: mitochondria | ||||||||||||||||||||
| Buffer solution | pH: 7.7 | ||||||||||||||||||||
| Buffer component | 
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| Specimen | Conc.: 0.3 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||
| Specimen support | Grid material: COPPER / Grid type: Quantifoil R0.6/1 | ||||||||||||||||||||
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277.15 K | 
- Electron microscopy imaging
Electron microscopy imaging
| Experimental equipment |  Model: Titan Krios / Image courtesy: FEI Company | 
|---|---|
| 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: 2000 nm / Nominal defocus min: 1000 nm / Calibrated defocus min: 500 nm / Calibrated defocus max: 2500 nm / Cs: 2.7 mm / C2 aperture diameter: 50 µm / Alignment procedure: COMA FREE | 
| Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER | 
| Image recording | Average exposure time: 4.4 sec. / Electron dose: 80 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 9453 | 
- Processing
Processing
| EM software | Name: PHENIX / Version: 1.19_4092: / Category: model refinement | ||||||||||||||||||||||||
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| Particle selection | Num. of particles selected: 1758187 | ||||||||||||||||||||||||
| Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||
| 3D reconstruction | Resolution: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 57506 / Algorithm: FOURIER SPACE / Num. of class averages: 1 / Symmetry type: POINT | ||||||||||||||||||||||||
| Atomic model building | Protocol: RIGID BODY FIT / Details: initial fitting done in chimera | ||||||||||||||||||||||||
| Atomic model building | 3D fitting-ID: 1 / Source name: PDB / Type: experimental model 
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| Refine LS restraints | 
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