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Open data
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Basic information
| Entry | Database: PDB / ID: 5xtd | ||||||||||||||||||
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| Title | Cryo-EM structure of human respiratory complex I | ||||||||||||||||||
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Keywords | OXIDOREDUCTASE/ELECTRON TRANSPORT / Homo sapiens / Oxidoreductase / Respiratory / OXIDOREDUCTASE-ELECTRON TRANSPORT complex | ||||||||||||||||||
| Function / homology | Function and homology informationprotein lipoylation / Complex I biogenesis / Mitochondrial Fatty Acid Beta-Oxidation / Protein lipoylation / Respiratory electron transport / protein insertion into mitochondrial inner membrane / ubiquinone biosynthetic process / blastocyst hatching / cellular respiration / cellular response to oxygen levels ...protein lipoylation / Complex I biogenesis / Mitochondrial Fatty Acid Beta-Oxidation / Protein lipoylation / Respiratory electron transport / protein insertion into mitochondrial inner membrane / ubiquinone biosynthetic process / blastocyst hatching / cellular respiration / cellular response to oxygen levels / response to light intensity / mesenchymal stem cell proliferation / Mitochondrial protein import / reproductive system development / iron-sulfur cluster assembly complex / respiratory chain complex / mitochondrial [2Fe-2S] assembly complex / mitochondrial large ribosomal subunit binding / gliogenesis / mesenchymal stem cell differentiation / circulatory system development / oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor / negative regulation of non-canonical NF-kappaB signal transduction / cardiac muscle tissue development / neural precursor cell proliferation / [2Fe-2S] cluster assembly / oxygen sensor activity / positive regulation of mitochondrial membrane potential / response to hydroperoxide / azurophil granule membrane / cellular response to glucocorticoid stimulus / stem cell division / NADH dehydrogenase activity / iron-sulfur cluster assembly / sodium ion transport / acyl binding / ubiquinone binding / electron transport coupled proton transport / acyl carrier activity / NADH:ubiquinone reductase (H+-translocating) / mitochondrial ATP synthesis coupled electron transport / regulation of protein phosphorylation / 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 / RHOG GTPase cycle / respiratory chain complex I / response to cAMP / positive regulation of execution phase of apoptosis / NADH dehydrogenase (ubiquinone) activity / endopeptidase activator activity / quinone binding / cellular response to interferon-beta / ATP synthesis coupled electron transport / negative regulation of reactive oxygen species biosynthetic process / extrinsic apoptotic signaling pathway / cellular response to retinoic acid / neurogenesis / ionotropic glutamate receptor binding / Mitochondrial protein degradation / substantia nigra development / muscle contraction / reactive oxygen species metabolic process / aerobic respiration / synaptic membrane / cerebellum development / fatty acid binding / regulation of mitochondrial membrane potential / respiratory electron transport chain / response to nicotine / DNA damage response, signal transduction by p53 class mediator / kidney development / response to hydrogen peroxide / monooxygenase activity / sensory perception of sound / fatty acid metabolic process / circadian rhythm / brain development / mitochondrial membrane / mitochondrial intermembrane space / 2 iron, 2 sulfur cluster binding / multicellular organism growth / NAD binding / positive regulation of protein catabolic process / fatty acid biosynthetic process / cellular senescence / FMN binding / nervous system development / 4 iron, 4 sulfur cluster binding / response to oxidative stress / protease binding / response to ethanol / gene expression / in utero embryonic development / response to hypoxia / electron transfer activity / mitochondrial inner membrane / nuclear speck / nuclear body Similarity search - Function | ||||||||||||||||||
| Biological species | Homo sapiens (human) | ||||||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.7 Å | ||||||||||||||||||
Authors | Gu, J. / Wu, M. / Yang, M. | ||||||||||||||||||
| Funding support | China, 5items
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Citation | Journal: Cell / Year: 2017Title: Architecture of Human Mitochondrial Respiratory Megacomplex IIIIIV. Authors: Runyu Guo / Shuai Zong / Meng Wu / Jinke Gu / Maojun Yang / ![]() Abstract: The respiratory megacomplex represents the highest-order assembly of respiratory chain complexes, and it allows mitochondria to respond to energy-requiring conditions. To understand its architecture, ...The respiratory megacomplex represents the highest-order assembly of respiratory chain complexes, and it allows mitochondria to respond to energy-requiring conditions. To understand its architecture, we examined the human respiratory chain megacomplex-IIIIIV (MCIIIIIV) with 140 subunits and a subset of associated cofactors using cryo-electron microscopy. The MCIIIIIV forms a circular structure with the dimeric CIII located in the center, where it is surrounded by two copies each of CI and CIV. Two cytochrome c (Cyt.c) molecules are positioned to accept electrons on the surface of the c state CIII dimer. Analyses indicate that CII could insert into the gaps between CI and CIV to form a closed ring, which we termed the electron transport chain supercomplex. The structure not only reveals the precise assignment of individual subunits of human CI and CIII, but also enables future in-depth analysis of the electron transport chain as a whole. | ||||||||||||||||||
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Structure visualization
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| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 5xtd.cif.gz | 1.5 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb5xtd.ent.gz | 1.2 MB | Display | PDB format |
| PDBx/mmJSON format | 5xtd.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 5xtd_validation.pdf.gz | 1.9 MB | Display | wwPDB validaton report |
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| Full document | 5xtd_full_validation.pdf.gz | 2.3 MB | Display | |
| Data in XML | 5xtd_validation.xml.gz | 271 KB | Display | |
| Data in CIF | 5xtd_validation.cif.gz | 392.9 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/xt/5xtd ftp://data.pdbj.org/pub/pdb/validation_reports/xt/5xtd | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 6773MC ![]() 6771C ![]() 6772C ![]() 6774C ![]() 6775C ![]() 6776C ![]() 5xtbC ![]() 5xtcC ![]() 5xteC ![]() 5xthC ![]() 5xtiC M: map data used to model this data C: citing same article ( |
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| Similar structure data |
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Assembly
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Components
-NADH dehydrogenase [ubiquinone] flavoprotein ... , 3 types, 3 molecules AKO
| #1: Protein | Mass: 47323.938 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)References: UniProt: P49821, NADH:ubiquinone reductase (H+-translocating), NADH dehydrogenase |
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| #10: Protein/peptide | Mass: 3900.312 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P56181 |
| #14: Protein | Mass: 23430.881 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)References: UniProt: P19404, NADH:ubiquinone reductase (H+-translocating), NADH dehydrogenase |
-NADH dehydrogenase [ubiquinone] iron-sulfur protein ... , 7 types, 7 molecules BCLPQTh
| #2: Protein | Mass: 20314.037 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)References: UniProt: O00217, NADH:ubiquinone reductase (H+-translocating), NADH dehydrogenase |
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| #3: Protein | Mass: 17887.928 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)References: UniProt: O75251, NADH:ubiquinone reductase (H+-translocating), NADH dehydrogenase |
| #11: Protein | Mass: 13721.598 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O43181 |
| #15: Protein | Mass: 24432.656 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)References: UniProt: O75489, NADH:ubiquinone reductase (H+-translocating), NADH dehydrogenase |
| #16: Protein | Mass: 49236.480 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)References: UniProt: O75306, NADH:ubiquinone reductase (H+-translocating), NADH dehydrogenase |
| #18: Protein | Mass: 10578.848 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O75380 |
| #31: Protein | Mass: 12314.254 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O43920 |
-NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit ... , 12 types, 12 molecules EFHIJNSUVWuw
| #4: Protein | Mass: 13758.070 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P56556 |
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| #5: Protein | Mass: 9535.905 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O43678 |
| #7: Protein | Mass: 13119.208 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q16718 |
| #8: Protein | Mass: 12282.051 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O95182 |
| #9: Protein | Mass: 38387.594 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q16795 |
| #13: Protein | Mass: 16880.068 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9UI09 |
| #17: Protein | Mass: 8084.391 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O15239 |
| #19: Protein | Mass: 9156.602 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O95167 |
| #20: Protein | Mass: 14736.853 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q86Y39 |
| #21: Protein | Mass: 16132.570 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9P0J0 |
| #42: Protein | Mass: 19853.736 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P51970 |
| #44: Protein | Mass: 37200.270 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O95299 |
-Protein , 2 types, 3 molecules GXM
| #6: Protein | Mass: 9845.247 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O14561#12: Protein | | Mass: 75471.484 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)References: UniProt: P28331, NADH:ubiquinone reductase (H+-translocating), NADH dehydrogenase |
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-NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit ... , 11 types, 11 molecules YZabcdenopv
| #22: Protein | Mass: 7468.270 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O95178 |
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| #23: Protein | Mass: 9261.605 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O43676 |
| #24: Protein | Mass: 16573.160 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O43674 |
| #25: Protein | Mass: 15517.228 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O95139 |
| #26: Protein | Mass: 18267.562 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O95169 |
| #27: Protein | Mass: 20721.650 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O96000 |
| #28: Protein | Mass: 11494.942 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9NX14 |
| #37: Protein | Mass: 6741.883 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O75438 |
| #38: Protein | Mass: 15100.399 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O95168 |
| #39: Protein | Mass: 21189.141 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9Y6M9 |
| #43: Protein | Mass: 16435.045 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P17568 |
-NADH dehydrogenase [ubiquinone] 1 subunit ... , 2 types, 2 molecules fg
| #29: Protein/peptide | Mass: 5704.602 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O43677 |
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| #30: Protein | Mass: 14209.521 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O95298 |
-NADH-ubiquinone oxidoreductase chain ... , 7 types, 7 molecules ijklmrs
| #32: Protein | Mass: 39007.656 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)References: UniProt: Q4GRX1, UniProt: P03891*PLUS, NADH:ubiquinone reductase (H+-translocating) |
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| #33: Protein | Mass: 13147.871 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)References: UniProt: B9EE38, UniProt: P03897*PLUS, NADH:ubiquinone reductase (H+-translocating) |
| #34: Protein | Mass: 10702.086 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)References: UniProt: V9JN72, UniProt: P03901*PLUS, NADH:ubiquinone reductase (H+-translocating) |
| #35: Protein | Mass: 67096.023 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)References: UniProt: X5BVZ3, UniProt: P03915*PLUS, NADH:ubiquinone reductase (H+-translocating) |
| #36: Protein | Mass: 18660.979 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)References: UniProt: Q8HAX7, UniProt: P03923*PLUS, NADH:ubiquinone reductase (H+-translocating) |
| #40: Protein | Mass: 51689.688 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)References: UniProt: B2XJG5, UniProt: P03905*PLUS, NADH:ubiquinone reductase (H+-translocating) |
| #41: Protein | Mass: 35621.215 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)References: UniProt: H9PGF0, UniProt: P03886*PLUS, NADH:ubiquinone reductase (H+-translocating) |
-Non-polymers , 8 types, 30 molecules 














| #45: Chemical | ChemComp-SF4 / #46: Chemical | ChemComp-FMN / | #47: Chemical | ChemComp-PLX / ( #48: Chemical | #49: Chemical | ChemComp-NDP / | #50: Chemical | #51: Chemical | ChemComp-CDL / #52: Chemical | ChemComp-PEE / |
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-Details
| Has protein modification | Y |
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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: Human respiratory complex I / Type: COMPLEX / Entity ID: #1-#44 / Source: NATURAL |
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| Molecular weight | Value: 1 MDa / Experimental value: YES |
| Source (natural) | Organism: Homo sapiens (human) |
| Buffer solution | pH: 7.4 |
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Vitrification | Cryogen name: ETHANE |
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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: OTHER |
| Electron lens | Mode: BRIGHT FIELD |
| Image recording | Electron dose: 1.25 e/Å2 / Film or detector model: FEI FALCON II (4k x 4k) |
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Processing
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| CTF correction | Type: NONE | ||||||||||||||||||||||||||||||||||||
| Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 3.7 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 167761 / Symmetry type: POINT |
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Homo sapiens (human)
China, 5items
Citation
UCSF Chimera






























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