[English] 日本語

- EMDB-6772: Cryo-EM structure of human respiratory complex I transmembrane arm -
+
Open data
-
Basic information
Entry | Database: EMDB / ID: EMD-6772 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Title | Cryo-EM structure of human respiratory complex I transmembrane arm | |||||||||
![]() | This map was obtained by sub-region refinement. | |||||||||
![]() |
| |||||||||
Function / homology | ![]() protein lipoylation / Complex I biogenesis / Mitochondrial Fatty Acid Beta-Oxidation / Protein lipoylation / Respiratory electron transport / protein insertion into mitochondrial inner membrane / Mitochondrial protein import / cellular response to oxygen levels / response to light intensity / respiratory chain complex ...protein lipoylation / Complex I biogenesis / Mitochondrial Fatty Acid Beta-Oxidation / Protein lipoylation / Respiratory electron transport / protein insertion into mitochondrial inner membrane / Mitochondrial protein import / cellular response to oxygen levels / response to light intensity / respiratory chain complex / mitochondrial [2Fe-2S] assembly complex / iron-sulfur cluster assembly complex / mitochondrial large ribosomal subunit binding / gliogenesis / negative regulation of non-canonical NF-kappaB signal transduction / neural precursor cell proliferation / positive regulation of mitochondrial membrane potential / [2Fe-2S] cluster assembly / oxygen sensor activity / response to hydroperoxide / azurophil granule membrane / cellular response to glucocorticoid stimulus / iron-sulfur cluster assembly / acyl binding / mitochondrial ATP synthesis coupled electron transport / ubiquinone binding / acyl carrier activity / electron transport coupled proton transport / NADH:ubiquinone reductase (H+-translocating) / 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 / positive regulation of execution phase of apoptosis / respiratory chain complex I / 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 / reactive oxygen species metabolic process / aerobic respiration / cerebellum development / fatty acid binding / response to nicotine / response to hydrogen peroxide / sensory perception of sound / mitochondrial membrane / mitochondrial intermembrane space / NAD binding / positive regulation of protein catabolic process / fatty acid biosynthetic process / 4 iron, 4 sulfur cluster binding / response to oxidative stress / response to ethanol / in utero embryonic development / response to hypoxia / electron transfer activity / mitochondrial inner membrane / nuclear speck / mitochondrial matrix / response to xenobiotic stimulus / neuronal cell body / negative regulation of DNA-templated transcription / ubiquitin protein ligase binding / dendrite / calcium ion binding / Neutrophil degranulation / protein kinase binding / protein-containing complex binding / structural molecule activity / mitochondrion / nucleoplasm / ATP binding / metal ion binding / plasma membrane / cytoplasm Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.7 Å | |||||||||
![]() | Gu J / Wu M / Yang M | |||||||||
![]() | ![]() 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 | EM map: ![]() ![]() ![]() |
Supplemental images |
-
Downloads & links
-EMDB archive
Map data | ![]() | 22.8 MB | ![]() | |
---|---|---|---|---|
Header (meta data) | ![]() ![]() | 12.4 KB 12.4 KB | Display Display | ![]() |
Images | ![]() | 20.8 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 310.3 KB | Display | ![]() |
---|---|---|---|---|
Full document | ![]() | 309.9 KB | Display | |
Data in XML | ![]() | 7.6 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 5xtcMC ![]() 6771C ![]() 6773C ![]() 6774C ![]() 6775C ![]() 6776C ![]() 5xtbC ![]() 5xtdC ![]() 5xteC ![]() 5xthC ![]() 5xtiC M: atomic model generated by this map C: citing same article ( |
---|---|
Similar structure data |
-
Links
EMDB pages | ![]() ![]() |
---|---|
Related items in Molecule of the Month |
-
Map
File | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Annotation | This map was obtained by sub-region refinement. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.083 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
|
-Supplemental data
-
Sample components
-Entire : Human respiratory complex I transmembrane arm
Entire | Name: Human respiratory complex I transmembrane arm |
---|---|
Components |
|
-Supramolecule #1: Human respiratory complex I transmembrane arm
Supramolecule | Name: Human respiratory complex I transmembrane arm / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#29 |
---|---|
Source (natural) | Organism: ![]() |
-Experimental details
-Structure determination
Method | cryo EM |
---|---|
![]() | single particle reconstruction |
Aggregation state | particle |
-
Sample preparation
Concentration | 0.2 mg/mL |
---|---|
Buffer | pH: 7.4 |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % |
-
Electron microscopy
Microscope | FEI TITAN KRIOS |
---|---|
Image recording | Film or detector model: FEI FALCON II (4k x 4k) / Average electron dose: 1.25 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: OTHER / Imaging mode: BRIGHT FIELD |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
-
Image processing
CTF correction | Software - Name: CTFFIND (ver. 3.0) |
---|---|
Final reconstruction | Applied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.7 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 1.4) / Number images used: 167761 |
Initial angle assignment | Type: RANDOM ASSIGNMENT / Software - Name: RELION (ver. 1.4) |
Final angle assignment | Type: RANDOM ASSIGNMENT / Software - Name: RELION (ver. 1.4) |