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- EMDB-6773: Cryo-EM structure of human respiratory complex I -

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Basic information

Entry
Database: EMDB / ID: EMD-6773
TitleCryo-EM structure of human respiratory complex I
Map dataThis map was obtained by sub-region refinement.
Sample
  • Complex: Human respiratory complex I
Function / homology
Function and homology information


protein insertion into mitochondrial inner membrane / blastocyst hatching / protein lipoylation / Mitochondrial Fatty Acid Beta-Oxidation / Protein lipoylation / respiratory gaseous exchange by respiratory system / cellular response to oxygen levels / iron-sulfur cluster assembly complex / response to light intensity / Mitochondrial protein import ...protein insertion into mitochondrial inner membrane / blastocyst hatching / protein lipoylation / Mitochondrial Fatty Acid Beta-Oxidation / Protein lipoylation / respiratory gaseous exchange by respiratory system / cellular response to oxygen levels / iron-sulfur cluster assembly complex / response to light intensity / Mitochondrial protein import / mitochondrial large ribosomal subunit binding / gliogenesis / neural precursor cell proliferation / cardiac muscle tissue development / : / [2Fe-2S] cluster assembly / oxygen sensor activity / oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor / cellular response to glucocorticoid stimulus / ubiquinone-6 biosynthetic process / respiratory chain complex I / cellular respiration / iron-sulfur cluster assembly / azurophil granule membrane / NADH dehydrogenase activity / mitochondrial ribosome / sodium ion transport / mitochondrial translation / NADH:ubiquinone reductase (H+-translocating) / positive regulation of execution phase of apoptosis / apoptotic mitochondrial changes / RHOG GTPase cycle / endopeptidase activator activity / acyl binding / ubiquinone binding / Complex I biogenesis / acyl carrier activity / cellular response to interferon-beta / quinone binding / electron transport coupled proton transport / neurogenesis / Respiratory electron transport / : / ATP synthesis coupled electron transport / negative regulation of intrinsic apoptotic signaling pathway / ATP metabolic process / cellular response to retinoic acid / extrinsic apoptotic signaling pathway / mitochondrial ATP synthesis coupled electron transport / mitochondrial respiratory chain complex I assembly / response to cAMP / : / substantia nigra development / ionotropic glutamate receptor binding / respiratory electron transport chain / reactive oxygen species metabolic process / cerebellum development / regulation of mitochondrial membrane potential / : / mitochondrial electron transport, NADH to ubiquinone / response to cocaine / synaptic membrane / proton motive force-driven mitochondrial ATP synthesis / Mitochondrial protein degradation / fatty acid binding / NADH dehydrogenase (ubiquinone) activity / apoptotic signaling pathway / sensory perception of sound / regulation of protein phosphorylation / response to nicotine / circadian rhythm / brain development / response to hydrogen peroxide / mitochondrial membrane / aerobic respiration / mitochondrial intermembrane space / negative regulation of cell growth / 2 iron, 2 sulfur cluster binding / fatty acid biosynthetic process / positive regulation of fibroblast proliferation / positive regulation of protein catabolic process / NAD binding / FMN binding / nervous system development / 4 iron, 4 sulfur cluster binding / protease binding / response to ethanol / in utero embryonic development / response to oxidative stress / response to hypoxia / nuclear body / electron transfer activity / mitochondrial inner membrane / nuclear speck / structural constituent of ribosome / mitochondrial matrix / negative regulation of DNA-templated transcription / neuronal cell body / ubiquitin protein ligase binding / calcium ion binding
Similarity search - Function
Complex1_LYR-like / NADH-ubiquinone oxidoreductase 1 subunit C1 / NADH-ubiquinone oxidoreductase flavoprotein 3 / NADH dehydrogenase [ubiquinone] 1 subunit C1, mitochondrial / NADH dehydrogenase [ubiquinone] flavoprotein 3, mitochondrial / NADH:ubiquinone oxidoreductase, ESSS subunit / ESSS subunit of NADH:ubiquinone oxidoreductase (complex I) / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 1, NDUB1 / MNLL subunit / : ...Complex1_LYR-like / NADH-ubiquinone oxidoreductase 1 subunit C1 / NADH-ubiquinone oxidoreductase flavoprotein 3 / NADH dehydrogenase [ubiquinone] 1 subunit C1, mitochondrial / NADH dehydrogenase [ubiquinone] flavoprotein 3, mitochondrial / NADH:ubiquinone oxidoreductase, ESSS subunit / ESSS subunit of NADH:ubiquinone oxidoreductase (complex I) / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 1, NDUB1 / MNLL subunit / : / NADH-ubiquinone oxidoreductase, subunit 10 / NADH-ubiquinone oxidoreductase subunit 10 / NADH dehydrogenase [ubiquinone] (complex I), alpha subcomplex subunit 1 / NADH-ubiquinone oxidoreductase MWFE subunit / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 10 / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 7 / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 8, metazoa / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 2, animal type / NADH:ubiquinone oxidoreductase subunit B14.5a (Complex I-B14.5a) / NADH dehydrogenase 1 beta subcomplex subunit 2 / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 3 / NADH dehydrogenase 1 alpha subcomplex subunit 3 / NADH dehydrogenase [ubiquinone] 1 subunit C2, NDUC2 / NADH:ubiquinone oxidoreductase, subunit NDUFB4 / NADH-ubiquinone oxidoreductase subunit b14.5b (NDUFC2) / NADH-ubiquinone oxidoreductase B15 subunit (NDUFB4) / : / NADH:ubiquinone oxidoreductase chain 4, N-terminal / NADH:ubiquinone oxidoreductase, chain 2 / NADH dehydrogenase subunit 2, C-terminal / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 10, mitochondrial / NADH:ubiquinone oxidoreductase, NDUFB5/SGDH subunit / : / : / NADH-ubiquinone oxidoreductase chain 4, amino terminus / NADH dehydrogenase subunit 2 C-terminus / NADH:ubiquinone oxidoreductase, NDUFB5/SGDH subunit / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 8 / GRIM-19 / NADH-ubiquinone oxidoreductase ASHI subunit (CI-ASHI or NDUFB8) / GRIM-19 protein / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 11 / NADH dehydrogenase subunit 5, C-terminal / NADH dehydrogenase subunit 5 C-terminus / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 3 / NADH-ubiquinone oxidoreductase B12 subunit family / NADH:ubiquinone oxidoreductase, NDUFS5-15kDa / NDUFA6, LYR domain / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 7, NDUB7 / NADH-ubiquinone oxidoreductase B18 subunit (NDUFB7) / NADH dehydrogenase ubiquinone Fe-S protein 4-like superfamily / NADH dehydrogenase ubiquinone Fe-S protein 4 / NADH dehydrogenase [ubiquinone] (complex I), alpha subcomplex, subunit 2 / NDUFB9, LYR domain / NADH dehydrogenase ubiquinone Fe-S protein 4, mitochondrial / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 9 / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 5 / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 12 / NADH:ubiquinone oxidoreductase, iron-sulphur subunit 5 / ETC complex I subunit conserved region / NADH ubiquinone oxidoreductase subunit NDUFA12 / NADH dehydrogenase [ubiquinone] (complex I), alpha subcomplex, subunit 6 / NADH dehydrogenase [ubiquinone] (complex I), alpha subcomplex, subunit 8 / NADH-quinone oxidoreductase, chain G, C-terminal / : / NADH-ubiquinone oxidoreductase subunit G, C-terminal / Deoxynucleoside kinase domain / Deoxynucleoside kinase / Respiratory-chain NADH dehydrogenase 20 Kd subunit signature. / NADH-ubiquinone oxidoreductase, 20 Kd subunit / NADH-quinone oxidoreductase, chain I / NAD(P)H-quinone oxidoreductase subunit D/H / : / NADH:ubiquinone oxidoreductase, 49kDa subunit, conserved site / Respiratory chain NADH dehydrogenase 49 Kd subunit signature. / NADH-quinone oxidoreductase, subunit D / Respiratory-chain NADH dehydrogenase, 49 Kd subunit / NADH:ubiquinone oxidoreductase, subunit G / Respiratory-chain NADH dehydrogenase 75 Kd subunit signature 3. / Respiratory-chain NADH dehydrogenase 75 Kd subunit signature 2. / NADH ubiquinone oxidoreductase, F subunit / NADH dehydrogenase, subunit C / NADH-plastoquinone oxidoreductase, chain 5 subgroup / NADH-quinone oxidoreductase, chain M/4 / NADH:ubiquinone oxidoreductase, 30kDa subunit, conserved site / Respiratory chain NADH dehydrogenase 30 Kd subunit signature. / NADH-ubiquinone oxidoreductase chain 4L/K / NADH:ubiquinone/plastoquinone oxidoreductase, chain 6 / NADH-ubiquinone/plastoquinone oxidoreductase chain 6 / Respiratory-chain NADH dehydrogenase 75 Kd subunit signature 1. / 2Fe-2S iron-sulfur cluster binding domain / Complex 1 LYR protein domain / NADH-Ubiquinone oxidoreductase (complex I), chain 5 N-terminal / NADH-quinone oxidoreductase, chain 5-like / NADH-Ubiquinone oxidoreductase (complex I), chain 5 N-terminus / NADH:ubiquinone oxidoreductase, 75kDa subunit, conserved site / NADH:ubiquinone oxidoreductase, 30kDa subunit / NADH:ubiquinone oxidoreductase, 30kDa subunit superfamily / Respiratory-chain NADH dehydrogenase, 30 Kd subunit / Complex 1 protein (LYR family)
Similarity search - Domain/homology
NADH-ubiquinone oxidoreductase chain 4 / NADH-ubiquinone oxidoreductase chain 3 / NADH-ubiquinone oxidoreductase chain 1 / NADH dehydrogenase [ubiquinone] iron-sulfur protein 8, mitochondrial / Acyl carrier protein, mitochondrial / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 1 / NADH dehydrogenase [ubiquinone] iron-sulfur protein 4, mitochondrial / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 5, mitochondrial / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 3 / NADH dehydrogenase [ubiquinone] 1 subunit C1, mitochondrial ...NADH-ubiquinone oxidoreductase chain 4 / NADH-ubiquinone oxidoreductase chain 3 / NADH-ubiquinone oxidoreductase chain 1 / NADH dehydrogenase [ubiquinone] iron-sulfur protein 8, mitochondrial / Acyl carrier protein, mitochondrial / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 1 / NADH dehydrogenase [ubiquinone] iron-sulfur protein 4, mitochondrial / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 5, mitochondrial / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 3 / NADH dehydrogenase [ubiquinone] 1 subunit C1, mitochondrial / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 2 / NADH dehydrogenase [ubiquinone] iron-sulfur protein 5 / NADH dehydrogenase [ubiquinone] iron-sulfur protein 7, mitochondrial / NADH dehydrogenase [ubiquinone] iron-sulfur protein 2, mitochondrial / NADH dehydrogenase [ubiquinone] iron-sulfur protein 6, mitochondrial / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 1 / NADH dehydrogenase [ubiquinone] iron-sulfur protein 3, mitochondrial / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 6 / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 3 / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 4 / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 8, mitochondrial / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 2, mitochondrial / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 7 / NADH dehydrogenase [ubiquinone] 1 subunit C2 / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 10, mitochondrial / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 10 / NADH-ubiquinone oxidoreductase chain 1 / NADH-ubiquinone oxidoreductase chain 2 / NADH-ubiquinone oxidoreductase chain 3 / NADH-ubiquinone oxidoreductase chain 4L / NADH-ubiquinone oxidoreductase chain 4 / NADH-ubiquinone oxidoreductase chain 5 / NADH-ubiquinone oxidoreductase chain 6 / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 7 / NADH dehydrogenase [ubiquinone] flavoprotein 2, mitochondrial / NADH-ubiquinone oxidoreductase 75 kDa subunit, mitochondrial / NADH dehydrogenase [ubiquinone] flavoprotein 1, mitochondrial / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 8 / NADH dehydrogenase [ubiquinone] flavoprotein 3, mitochondrial / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 6 / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 5 / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 9, mitochondrial / NADH-ubiquinone oxidoreductase chain 2 / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 11 / NADH-ubiquinone oxidoreductase chain 6 / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 11, mitochondrial / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 13 / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 12 / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 9 / NADH-ubiquinone oxidoreductase chain 4L / NADH-ubiquinone oxidoreductase chain 5
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.7 Å
AuthorsGu J / Wu M / Yang M
CitationJournal: Cell / Year: 2017
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
DepositionJun 18, 2017-
Header (metadata) releaseAug 30, 2017-
Map releaseAug 30, 2017-
UpdateSep 6, 2017-
Current statusSep 6, 2017Processing site: PDBj / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.0525
  • Imaged by UCSF Chimera
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  • Surface view colored by height
  • Surface level: 0.0525
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-5xtd
  • Surface level: 0.0525
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
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Supplemental images

emd_6773.png

Downloads & links

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Map

FileDownload / File: emd_6773.map.gz / Format: CCP4 / Size: 421.9 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationThis map was obtained by sub-region refinement.
Voxel sizeX=Y=Z: 1.083 Å
Density
Contour LevelBy AUTHOR: 0.0525 / Movie #1: 0.0525
Minimum - Maximum-0.13369343 - 0.32487088
Average (Standard dev.)0.00051458186 (±0.005860823)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions480480480
Spacing480480480
CellA=B=C: 519.83997 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.0831.0831.083
M x/y/z480480480
origin x/y/z0.0000.0000.000
length x/y/z519.840519.840519.840
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS480480480
D min/max/mean-0.1340.3250.001

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Supplemental data

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Sample components

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Entire : Human respiratory complex I

EntireName: Human respiratory complex I
Components
  • Complex: Human respiratory complex I

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Supramolecule #1: Human respiratory complex I

SupramoleculeName: Human respiratory complex I / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#44
Source (natural)Organism: Homo sapiens (human)
Molecular weightExperimental: 1.0 MDa

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.4
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: FEI FALCON II (4k x 4k) / Average electron dose: 1.25 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: OTHER / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionSoftware - Name: CTFFIND (ver. 3.0)
Final reconstructionApplied 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 assignmentType: RANDOM ASSIGNMENT / Software - Name: RELION (ver. 1.4)
Final angle assignmentType: RANDOM ASSIGNMENT / Software - Name: RELION (ver. 1.4)

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