+
Open data
-
Basic information
Entry | Database: PDB / ID: 5xtd | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Title | Cryo-EM structure of human respiratory complex I | ||||||||||||||||||
![]() |
| ||||||||||||||||||
![]() | OXIDOREDUCTASE/ELECTRON TRANSPORT / Homo sapiens / Oxidoreductase / Respiratory / OXIDOREDUCTASE-ELECTRON TRANSPORT complex | ||||||||||||||||||
Function / homology | ![]() protein lipoylation / Complex I biogenesis / Mitochondrial Fatty Acid Beta-Oxidation / Protein lipoylation / Respiratory electron transport / protein insertion into mitochondrial inner membrane / blastocyst hatching / ubiquinone biosynthetic process / cellular respiration / Mitochondrial protein import ...protein lipoylation / Complex I biogenesis / Mitochondrial Fatty Acid Beta-Oxidation / Protein lipoylation / Respiratory electron transport / protein insertion into mitochondrial inner membrane / blastocyst hatching / ubiquinone biosynthetic process / cellular respiration / Mitochondrial protein import / mesenchymal stem cell proliferation / cellular response to oxygen levels / response to light intensity / respiratory chain complex / reproductive system development / mitochondrial [2Fe-2S] assembly complex / iron-sulfur cluster 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 / positive regulation of mitochondrial membrane potential / [2Fe-2S] cluster assembly / oxygen sensor activity / response to hydroperoxide / azurophil granule membrane / stem cell division / cellular response to glucocorticoid stimulus / sodium ion transport / iron-sulfur cluster assembly / acyl binding / mitochondrial ATP synthesis coupled electron transport / ubiquinone binding / : / electron transport coupled proton transport / acyl carrier activity / NADH:ubiquinone reductase (H+-translocating) / regulation of protein phosphorylation / positive regulation of ATP biosynthetic process / NADH dehydrogenase activity / mitochondrial respiratory chain complex I assembly / mitochondrial electron transport, NADH to ubiquinone / proton motive force-driven mitochondrial ATP synthesis / positive regulation of execution phase of apoptosis / RHOG GTPase cycle / respiratory chain complex I / NADH dehydrogenase (ubiquinone) activity / endopeptidase activator activity / quinone binding / cellular response to interferon-beta / response to cAMP / ATP synthesis coupled electron transport / extrinsic apoptotic signaling pathway / negative regulation of reactive oxygen species biosynthetic process / cellular response to retinoic acid / neurogenesis / ionotropic glutamate receptor binding / substantia nigra development / Mitochondrial protein degradation / muscle contraction / reactive oxygen species metabolic process / aerobic respiration / cerebellum development / fatty acid binding / respiratory electron transport chain / regulation of mitochondrial membrane potential / response to nicotine / DNA damage response, signal transduction by p53 class mediator / response to cocaine / kidney development / fatty acid metabolic process / sensory perception of sound / response to hydrogen peroxide / synaptic membrane / monooxygenase activity / mitochondrial membrane / brain development / mitochondrial intermembrane space / 2 iron, 2 sulfur cluster binding / multicellular organism growth / circadian rhythm / 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 / protease binding / response to ethanol / in utero embryonic development / response to oxidative stress / gene expression / response to hypoxia / electron transfer activity / mitochondrial inner membrane Similarity search - Function | ||||||||||||||||||
Biological species | ![]() | ||||||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.7 Å | ||||||||||||||||||
![]() | Gu, J. / Wu, M. / Yang, M. | ||||||||||||||||||
Funding support | ![]()
| ||||||||||||||||||
![]() | ![]() Title: 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. | ||||||||||||||||||
History |
|
-
Structure visualization
Movie |
![]() |
---|---|
Structure viewer | Molecule: ![]() ![]() |
-
Downloads & links
-
Download
PDBx/mmCIF format | ![]() | 1.5 MB | Display | ![]() |
---|---|---|---|---|
PDB format | ![]() | 1.2 MB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.8 MB | Display | ![]() |
---|---|---|---|---|
Full document | ![]() | 1.8 MB | Display | |
Data in XML | ![]() | 199.2 KB | Display | |
Data in CIF | ![]() | 310.4 KB | Display | |
Arichive directory | ![]() ![]() | 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 ( |
---|---|
Similar structure data |
-
Links
-
Assembly
Deposited unit | ![]()
|
---|---|
1 |
|
-
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) ![]() References: UniProt: P49821, NADH:ubiquinone reductase (H+-translocating), NADH dehydrogenase |
---|---|
#10: Protein/peptide | Mass: 3900.312 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#14: Protein | Mass: 23430.881 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() 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) ![]() References: UniProt: O00217, NADH:ubiquinone reductase (H+-translocating), NADH dehydrogenase |
---|---|
#3: Protein | Mass: 17887.928 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() 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) ![]() |
#15: Protein | Mass: 24432.656 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() 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) ![]() 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) ![]() |
#31: Protein | Mass: 12314.254 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-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) ![]() |
---|---|
#5: Protein | Mass: 9535.905 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#7: Protein | Mass: 13119.208 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#8: Protein | Mass: 12282.051 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#9: Protein | Mass: 38387.594 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#13: Protein | Mass: 16880.068 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#17: Protein | Mass: 8084.391 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#19: Protein | Mass: 9156.602 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#20: Protein | Mass: 14736.853 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#21: Protein | Mass: 16132.570 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#42: Protein | Mass: 19853.736 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#44: Protein | Mass: 37200.270 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-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) ![]() #12: Protein | | Mass: 75471.484 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: P28331, NADH:ubiquinone reductase (H+-translocating), NADH dehydrogenase |
---|
-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) ![]() |
---|---|
#23: Protein | Mass: 9261.605 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#24: Protein | Mass: 16573.160 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#25: Protein | Mass: 15517.228 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#26: Protein | Mass: 18267.562 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#27: Protein | Mass: 20721.650 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#28: Protein | Mass: 11494.942 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#37: Protein | Mass: 6741.883 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#38: Protein | Mass: 15100.399 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#39: Protein | Mass: 21189.141 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#43: Protein | Mass: 16435.045 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-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) ![]() |
---|---|
#30: Protein | Mass: 14209.521 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-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) ![]() References: UniProt: Q4GRX1, UniProt: P03891*PLUS, NADH:ubiquinone reductase (H+-translocating) |
---|---|
#33: Protein | Mass: 13147.871 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() 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) ![]() 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) ![]() 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) ![]() 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) ![]() 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) ![]() 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 / |
---|
-Details
Has protein modification | Y |
---|
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
---|---|
EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-
Sample preparation
Component | Name: Human respiratory complex I / Type: COMPLEX / Entity ID: #1-#44 / Source: NATURAL |
---|---|
Molecular weight | Value: 1 MDa / Experimental value: YES |
Source (natural) | Organism: ![]() |
Buffer solution | pH: 7.4 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
-
Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
---|---|
Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 1.25 e/Å2 / Film or detector model: FEI FALCON II (4k x 4k) |
-
Processing
EM software |
| ||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 |