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Open data
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Basic information
Entry | Database: PDB / ID: 8pw5 | |||||||||
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Title | CS respirasome from murine liver | |||||||||
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![]() | MEMBRANE PROTEIN / Respiratory chain super complex / mammalian mitochondria | |||||||||
Function / homology | ![]() Complex IV assembly / Complex III assembly / TP53 Regulates Metabolic Genes / subthalamus development / pons development / Mitochondrial protein import / response to injury involved in regulation of muscle adaptation / mesenchymal stem cell proliferation / reproductive system development / Protein lipoylation ...Complex IV assembly / Complex III assembly / TP53 Regulates Metabolic Genes / subthalamus development / pons development / Mitochondrial protein import / response to injury involved in regulation of muscle adaptation / mesenchymal stem cell proliferation / reproductive system development / Protein lipoylation / cerebellar Purkinje cell layer development / Mitochondrial Fatty Acid Beta-Oxidation / Complex I biogenesis / respiratory chain complex IV assembly / RHOG GTPase cycle / Respiratory electron transport / response to mercury ion / Cytoprotection by HMOX1 / protein insertion into mitochondrial inner membrane / mesenchymal stem cell differentiation / pyramidal neuron development / circulatory system development / blastocyst hatching / mitochondrial respiratory chain complex III assembly / thalamus development / aerobic electron transport chain / respiratory system process / cellular respiration / respiratory chain complex IV / psychomotor behavior / Mitochondrial protein degradation / response to light intensity / cellular response to oxygen levels / respiratory chain complex / stem cell division / mitochondrial [2Fe-2S] assembly complex / iron-sulfur cluster assembly complex / mitochondrial large ribosomal subunit binding / response to copper ion / gliogenesis / response to alkaloid / cytochrome-c oxidase / respiratory chain complex III / oxidative phosphorylation / negative regulation of non-canonical NF-kappaB signal transduction / response to glucagon / cardiac muscle tissue development / quinol-cytochrome-c reductase / neural precursor cell proliferation / [2Fe-2S] cluster assembly / positive regulation of mitochondrial membrane potential / mitochondrial electron transport, cytochrome c to oxygen / adult walking behavior / ubiquinol-cytochrome-c reductase activity / cellular response to glucocorticoid stimulus / oxygen sensor activity / response to hydroperoxide / cytochrome-c oxidase activity / mitochondrial electron transport, ubiquinol to cytochrome c / hypothalamus development / iron-sulfur cluster assembly / positive regulation of ATP biosynthetic process / response to cobalamin / midbrain development / adult behavior / electron transport coupled proton transport / dopamine metabolic process / NADH:ubiquinone reductase (H+-translocating) / positive regulation of execution phase of apoptosis / NADH dehydrogenase activity / mitochondrial electron transport, NADH to ubiquinone / mitochondrial respiratory chain complex I assembly / proton motive force-driven mitochondrial ATP synthesis / respiratory chain complex I / DNA damage response, signal transduction by p53 class mediator / response to hyperoxia / NADH dehydrogenase (ubiquinone) activity / animal organ regeneration / neuron development / quinone binding / cellular response to interferon-beta / response to electrical stimulus / response to cadmium ion / ATP synthesis coupled electron transport / cellular response to retinoic acid / negative regulation of reactive oxygen species biosynthetic process / extrinsic apoptotic signaling pathway / muscle contraction / response to hormone / tricarboxylic acid cycle / lactation / Neutrophil degranulation / cerebellum development / reactive oxygen species metabolic process / visual perception / aerobic respiration / regulation of mitochondrial membrane potential / hippocampus development / central nervous system development / regulation of membrane potential Similarity search - Function | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.6 Å | |||||||||
![]() | Vercellino, I. / Sazanov, L.A. | |||||||||
Funding support | European Union, 1items
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![]() | ![]() 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: ![]() Title: Real-space refinement in PHENIX for cryo-EM and crystallography Authors: Afonine, P.V. / Adams, P.D. | |||||||||
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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PDBx/mmCIF format | ![]() | 3.2 MB | Display | ![]() |
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PDB format | ![]() | Display | ![]() | |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Summary document | ![]() | 4.8 MB | Display | ![]() |
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Full document | ![]() | 4.9 MB | Display | |
Data in XML | ![]() | 382.5 KB | Display | |
Data in CIF | ![]() | 587.4 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 17989MC ![]() 8pw6C ![]() 8pw7C ![]() 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 ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
+Cytochrome c oxidase subunit ... , 13 types, 25 molecules tgmznaobpcqdresfuhvixkylw
+Cytochrome b-c1 complex subunit ... , 8 types, 17 molecules ALBMEPTFQGRHSJUKV
+Protein , 5 types, 8 molecules CNDOI3T1U1
+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, 112 molecules 




































+Details
-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: SC respirasome from murine liver / Type: COMPLEX / Entity ID: #3-#19, #1, #20-#23, #2, #24-#68 / Source: NATURAL | ||||||||||||||||||||
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Molecular weight | Value: 1.9 MDa / Experimental value: NO | ||||||||||||||||||||
Source (natural) | Organism: ![]() ![]() | ||||||||||||||||||||
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 type: Quantifoil R0.6/1 | ||||||||||||||||||||
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277.15 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 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 |
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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: 3.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 51488 / Num. of class averages: 3 / 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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