[English] 日本語
Yorodumi
- PDB-9hzl: High resolution cryo-EM structure of human complex III in mitochondria -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: PDB / ID: 9hzl
TitleHigh resolution cryo-EM structure of human complex III in mitochondria
Components
  • (Cytochrome b-c1 complex subunit ...) x 8
  • Cytochrome b
  • Cytochrome c1, heme protein, mitochondrial
KeywordsMEMBRANE PROTEIN / Human mitochondria / respirasome complex / cytochrome bc1 complex / CoQH2-cytochrome c reductase / complex III
Function / homology
Function and homology information


Complex III assembly / Complex III assembly / Complex III assembly / Complex III assembly / Complex III assembly / response to D-galactosamine / Complex III assembly / Complex III assembly / Complex III assembly / Complex III assembly ...Complex III assembly / Complex III assembly / Complex III assembly / Complex III assembly / Complex III assembly / response to D-galactosamine / Complex III assembly / Complex III assembly / Complex III assembly / Complex III assembly / response to mercury ion / subthalamus development / pons development / Respiratory electron transport / response to cobalamin / cerebellar Purkinje cell layer development / mitochondrial respiratory chain complex III assembly / pyramidal neuron development / response to alkaloid / cellular respiration / thalamus development / Mitochondrial protein import / respiratory chain complex / respiratory chain complex III / oxidative phosphorylation / quinol-cytochrome-c reductase / response to glucagon / quinol-cytochrome-c reductase activity / response to copper ion / mitochondrial electron transport, ubiquinol to cytochrome c / hypothalamus development / midbrain development / electron transport coupled proton transport / animal organ regeneration / response to hyperoxia / response to cadmium ion / Mitochondrial protein degradation / aerobic respiration / response to activity / respiratory electron transport chain / generation of precursor metabolites and energy / hippocampus development / response to calcium ion / metalloendopeptidase activity / 2 iron, 2 sulfur cluster binding / response to toxic substance / response to ethanol / response to hypoxia / oxidoreductase activity / electron transfer activity / mitochondrial inner membrane / mitochondrial matrix / response to xenobiotic stimulus / heme binding / ubiquitin protein ligase binding / protein-containing complex binding / mitochondrion / proteolysis / nucleoplasm / metal ion binding / nucleus / membrane
Similarity search - Function
Cytochrome b-c1 complex subunit 10 / Single alpha-helix domain superfamily / Ubiquinol-cytochrome C reductase complex, 6.4kD protein / Ubiquinol-cytochrome c reductase 8kDa, N-terminal / Ubiquinol-cytochrome c reductase 8 kDa, N-terminal / Globular protein, non-globular alpha/beta subunit / Cytochrome b-c1 complex, subunit 6 / Cytochrome b-c1 complex subunit 8 / UcrQ family / Cytochrome bc1 complex subunit Rieske, transmembrane domain superfamily ...Cytochrome b-c1 complex subunit 10 / Single alpha-helix domain superfamily / Ubiquinol-cytochrome C reductase complex, 6.4kD protein / Ubiquinol-cytochrome c reductase 8kDa, N-terminal / Ubiquinol-cytochrome c reductase 8 kDa, N-terminal / Globular protein, non-globular alpha/beta subunit / Cytochrome b-c1 complex, subunit 6 / Cytochrome b-c1 complex subunit 8 / UcrQ family / Cytochrome bc1 complex subunit Rieske, transmembrane domain superfamily / Cytochrome b-c1 complex subunit 7 / Cytochrome b-c1 complex subunit 7 superfamily / Ubiquinol-cytochrome C reductase complex 14kD subunit / Cytochrome b-c1 complex subunit 8 superfamily / Cytochrome b-c1 complex subunit Rieske, transmembrane domain / Ubiquinol cytochrome reductase transmembrane region / Cytochrome b-c1 complex subunit 9 / Cytochrome b-c1 complex subunit 9 superfamily / Cytochrome b-c1 complex subunit 9 / Ubiquinol-cytochrome C reductase hinge domain / Ubiquinol-cytochrome C reductase hinge domain superfamily / Ubiquinol-cytochrome C reductase hinge protein / Cytochrome c1, transmembrane anchor, C-terminal / : / Cytochrome b / Ubiquinol-cytochrome c reductase, iron-sulphur subunit / : / Cytochrome c1 / Cytochrome C1 family / : / Cytochrome b/b6, C-terminal / Cytochrome b(C-terminal)/b6/petD / Cytochrome b/b6 C-terminal region profile. / Peptidase M16, zinc-binding site / Insulinase family, zinc-binding region signature. / Cytochrome b/b6, C-terminal domain superfamily / Cytochrome b/b6/petB / Rieske iron-sulphur protein, C-terminal / Cytochrome b/b6, N-terminal / Cytochrome b/b6-like domain superfamily / Cytochrome b/b6 N-terminal region profile. / Di-haem cytochrome, transmembrane / Rieske iron-sulphur protein / Peptidase M16, C-terminal / Peptidase M16 inactive domain / Peptidase M16, N-terminal / Insulinase (Peptidase family M16) / Metalloenzyme, LuxS/M16 peptidase-like / Rieske [2Fe-2S] domain / Rieske [2Fe-2S] iron-sulphur domain / Rieske [2Fe-2S] iron-sulfur domain profile. / Rieske [2Fe-2S] iron-sulphur domain superfamily / Cytochrome c-like domain superfamily
Similarity search - Domain/homology
1,2-Distearoyl-sn-glycerophosphoethanolamine / CARDIOLIPIN / FE2/S2 (INORGANIC) CLUSTER / HEME C / PROTOPORPHYRIN IX CONTAINING FE / 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE / 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine / Chem-PLX / UBIQUINONE-10 / Cytochrome b-c1 complex subunit 8 ...1,2-Distearoyl-sn-glycerophosphoethanolamine / CARDIOLIPIN / FE2/S2 (INORGANIC) CLUSTER / HEME C / PROTOPORPHYRIN IX CONTAINING FE / 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE / 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine / Chem-PLX / UBIQUINONE-10 / Cytochrome b-c1 complex subunit 8 / Cytochrome b-c1 complex subunit 10 / Cytochrome b / Cytochrome b-c1 complex subunit 6, mitochondrial / Cytochrome c1, heme protein, mitochondrial / Cytochrome b-c1 complex subunit 7 / Cytochrome b-c1 complex subunit 2, mitochondrial / Cytochrome b-c1 complex subunit 1, mitochondrial / Cytochrome b-c1 complex subunit Rieske, mitochondrial / Cytochrome b-c1 complex subunit 9
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.52 Å
AuthorsNguyen, M.D. / Khajawa, A. / Rorbach, J.
Funding support Sweden, 1items
OrganizationGrant numberCountry
Knut and Alice Wallenberg Foundation023405053 Sweden
CitationJournal: To Be Published
Title: Structural basis for late maturation steps of mitochondrial respiratory chain complex IV within the human respirasome
Authors: Nguyen, M.D. / Khajawa, A. / Rorbach, J.
History
DepositionJan 14, 2025Deposition site: PDBE / Processing site: PDBE
Revision 1.0Nov 12, 2025Provider: repository / Type: Initial release
Revision 1.0Nov 12, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Nov 12, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Nov 12, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Nov 12, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Nov 12, 2025Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

-
Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

-
Assembly

Deposited unit
A: Cytochrome b-c1 complex subunit 8
B: Cytochrome b-c1 complex subunit Rieske, mitochondrial
C: Cytochrome b-c1 complex subunit Rieske, mitochondrial
D: Cytochrome b-c1 complex subunit 9
E: Cytochrome b-c1 complex subunit 6, mitochondrial
F: Cytochrome b-c1 complex subunit 7
G: Cytochrome b-c1 complex subunit 10
H: Cytochrome c1, heme protein, mitochondrial
J: Cytochrome b
K: Cytochrome b-c1 complex subunit 2, mitochondrial
L: Cytochrome b-c1 complex subunit 1, mitochondrial
N: Cytochrome b-c1 complex subunit 8
O: Cytochrome b-c1 complex subunit Rieske, mitochondrial
P: Cytochrome b-c1 complex subunit Rieske, mitochondrial
Q: Cytochrome b-c1 complex subunit 9
R: Cytochrome b-c1 complex subunit 6, mitochondrial
S: Cytochrome b-c1 complex subunit 7
T: Cytochrome b-c1 complex subunit 10
U: Cytochrome c1, heme protein, mitochondrial
V: Cytochrome b
W: Cytochrome b-c1 complex subunit 2, mitochondrial
Y: Cytochrome b-c1 complex subunit 1, mitochondrial
hetero molecules


Theoretical massNumber of molelcules
Total (without water)602,14853
Polymers573,90722
Non-polymers28,24131
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

-
Components

-
Cytochrome b-c1 complex subunit ... , 8 types, 18 molecules ANBCOPDQERFSGTKWLY

#1: Protein Cytochrome b-c1 complex subunit 8 / Complex III subunit 8 / Complex III subunit VIII / Ubiquinol-cytochrome c reductase complex 9.5 kDa ...Complex III subunit 8 / Complex III subunit VIII / Ubiquinol-cytochrome c reductase complex 9.5 kDa protein / Ubiquinol-cytochrome c reductase complex ubiquinone-binding protein QP-C


Mass: 9922.376 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O14949
#2: Protein
Cytochrome b-c1 complex subunit Rieske, mitochondrial / Complex III subunit 5 / Cytochrome b-c1 complex subunit 5 / Rieske iron-sulfur protein / RISP / ...Complex III subunit 5 / Cytochrome b-c1 complex subunit 5 / Rieske iron-sulfur protein / RISP / Rieske protein UQCRFS1 / Ubiquinol-cytochrome c reductase iron-sulfur subunit


Mass: 29704.971 Da / Num. of mol.: 4 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P47985, quinol-cytochrome-c reductase
#3: Protein Cytochrome b-c1 complex subunit 9 / Complex III subunit 9 / Complex III subunit X / Cytochrome c1 non-heme 7 kDa protein / Ubiquinol- ...Complex III subunit 9 / Complex III subunit X / Cytochrome c1 non-heme 7 kDa protein / Ubiquinol-cytochrome c reductase complex 7.2 kDa protein


Mass: 7320.495 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9UDW1
#4: Protein Cytochrome b-c1 complex subunit 6, mitochondrial / Complex III subunit 6 / Complex III subunit VIII / Cytochrome c1 non-heme 11 kDa protein / ...Complex III subunit 6 / Complex III subunit VIII / Cytochrome c1 non-heme 11 kDa protein / Mitochondrial hinge protein / Ubiquinol-cytochrome c reductase complex 11 kDa protein


Mass: 10753.787 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P07919
#5: Protein Cytochrome b-c1 complex subunit 7 / Complex III subunit 7 / Complex III subunit VII / QP-C / Ubiquinol-cytochrome c reductase complex ...Complex III subunit 7 / Complex III subunit VII / QP-C / Ubiquinol-cytochrome c reductase complex 14 kDa protein


Mass: 13554.477 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P14927
#6: Protein Cytochrome b-c1 complex subunit 10 / Complex III subunit 10 / Complex III subunit XI / Ubiquinol-cytochrome c reductase complex 6.4 kDa protein


Mass: 6577.658 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O14957
#9: Protein Cytochrome b-c1 complex subunit 2, mitochondrial / Complex III subunit 2 / Core protein II / Ubiquinol-cytochrome-c reductase complex core protein 2


Mass: 48495.809 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P22695
#10: Protein Cytochrome b-c1 complex subunit 1, mitochondrial / Complex III subunit 1 / Core protein I / Ubiquinol-cytochrome-c reductase complex core protein 1


Mass: 52704.652 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P31930

-
Protein , 2 types, 4 molecules HUJV

#7: Protein Cytochrome c1, heme protein, mitochondrial / Complex III subunit 4 / Complex III subunit IV / Cytochrome b-c1 complex subunit 4 / Ubiquinol- ...Complex III subunit 4 / Complex III subunit IV / Cytochrome b-c1 complex subunit 4 / Ubiquinol-cytochrome-c reductase complex cytochrome c1 subunit / Cytochrome c-1


Mass: 35469.000 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P08574, quinol-cytochrome-c reductase
#8: Protein Cytochrome b / Complex III subunit 3 / Complex III subunit III / Cytochrome b-c1 complex subunit 3 / Ubiquinol- ...Complex III subunit 3 / Complex III subunit III / Cytochrome b-c1 complex subunit 3 / Ubiquinol-cytochrome-c reductase complex cytochrome b subunit


Mass: 42745.285 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P00156

-
Non-polymers , 9 types, 31 molecules

#11: Chemical
ChemComp-CDL / CARDIOLIPIN / DIPHOSPHATIDYL GLYCEROL / BIS-(1,2-DIACYL-SN-GLYCERO-3-PHOSPHO)-1',3'-SN-GLYCEROL


Mass: 1464.043 Da / Num. of mol.: 9 / Source method: obtained synthetically / Formula: C81H156O17P2 / Feature type: SUBJECT OF INVESTIGATION / Comment: phospholipid*YM
#12: Chemical
ChemComp-3PE / 1,2-Distearoyl-sn-glycerophosphoethanolamine / 3-SN-PHOSPHATIDYLETHANOLAMINE / 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOETHANOLAMINE


Mass: 748.065 Da / Num. of mol.: 6 / Source method: obtained synthetically / Formula: C41H82NO8P / Comment: phospholipid*YM
#13: Chemical ChemComp-FES / FE2/S2 (INORGANIC) CLUSTER


Mass: 175.820 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Fe2S2
#14: Chemical ChemComp-PLX / (9R,11S)-9-({[(1S)-1-HYDROXYHEXADECYL]OXY}METHYL)-2,2-DIMETHYL-5,7,10-TRIOXA-2LAMBDA~5~-AZA-6LAMBDA~5~-PHOSPHAOCTACOSANE-6,6,11-TRIOL


Mass: 767.132 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C42H89NO8P / Comment: phospholipid*YM
#15: Chemical ChemComp-HEC / HEME C


Mass: 618.503 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C34H34FeN4O4 / Feature type: SUBJECT OF INVESTIGATION
#16: Chemical
ChemComp-HEM / PROTOPORPHYRIN IX CONTAINING FE / HEME


Mass: 616.487 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C34H32FeN4O4 / Feature type: SUBJECT OF INVESTIGATION
#17: Chemical ChemComp-PEE / 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine / DOPE


Mass: 744.034 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C41H78NO8P / Comment: DOPE, phospholipid*YM
#18: Chemical
ChemComp-U10 / UBIQUINONE-10 / Coenzyme Q10


Mass: 863.343 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C59H90O4 / Feature type: SUBJECT OF INVESTIGATION
#19: Chemical ChemComp-PC1 / 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE / 3-SN-PHOSPHATIDYLCHOLINE


Mass: 790.145 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C44H88NO8P / Comment: phospholipid*YM

-
Details

Has ligand of interestY
Has protein modificationY

-
Experimental details

-
Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

-
Sample preparation

ComponentName: Complex III / Type: CELL / Entity ID: #1-#10 / Source: NATURAL
Source (natural)Organism: Homo sapiens (human)
Buffer solutionpH: 7.4
Details: 25 mM HEPES-KOH pH=7.5, 50 mM KCl, 20 mM Mg(OAc)2, 0.01% (v/v) LMNG, 0.001 % cardiolipin, 0.001 % GD, 0.1mM DTT
Buffer component
IDConc.NameFormulaBuffer-ID
150 mMpotassium chlorideKCl1
225 mMHepesC8H18N2O4S1
320 mMMagnesium acetateMg(CH3COO)21
40.01 %LMNGC47H88O221
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R2/2
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K

-
Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: OTHER / Accelerating voltage: 300 kV / Illumination mode: OTHER
Electron lensMode: OTHER / Nominal magnification: 105000 X / Nominal defocus max: 2000 nm / Nominal defocus min: 600 nm
Specimen holderCryogen: NITROGEN
Image recordingElectron dose: 35 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of real images: 17476

-
Processing

EM softwareName: PHENIX / Version: 1.21rc1_5156 / Category: model refinement / Details: doi: 10.1107/S2059798319011471
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.52 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 213731 / Symmetry type: POINT
RefinementCross valid method: NONE
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
Displacement parametersBiso mean: 74.3 Å2
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.002635455
ELECTRON MICROSCOPYf_angle_d1.163248028
ELECTRON MICROSCOPYf_chiral_restr0.0375146
ELECTRON MICROSCOPYf_plane_restr0.00516044
ELECTRON MICROSCOPYf_dihedral_angle_d17.96325904

+
About Yorodumi

-
News

-
Feb 9, 2022. New format data for meta-information of EMDB entries

New format data for meta-information of EMDB entries

  • Version 3 of the EMDB header file is now the official format.
  • The previous official version 1.9 will be removed from the archive.

Related info.:EMDB header

External links:wwPDB to switch to version 3 of the EMDB data model

-
Aug 12, 2020. Covid-19 info

Covid-19 info

URL: https://pdbj.org/emnavi/covid19.php

New page: Covid-19 featured information page in EM Navigator.

Related info.:Covid-19 info / Mar 5, 2020. Novel coronavirus structure data

+
Mar 5, 2020. Novel coronavirus structure data

Novel coronavirus structure data

Related info.:Yorodumi Speices / Aug 12, 2020. Covid-19 info

External links:COVID-19 featured content - PDBj / Molecule of the Month (242)：Coronavirus Proteases

+
Jan 31, 2019. EMDB accession codes are about to change! (news from PDBe EMDB page)

EMDB accession codes are about to change! (news from PDBe EMDB page)

  • The allocation of 4 digits for EMDB accession codes will soon come to an end. Whilst these codes will remain in use, new EMDB accession codes will include an additional digit and will expand incrementally as the available range of codes is exhausted. The current 4-digit format prefixed with “EMD-” (i.e. EMD-XXXX) will advance to a 5-digit format (i.e. EMD-XXXXX), and so on. It is currently estimated that the 4-digit codes will be depleted around Spring 2019, at which point the 5-digit format will come into force.
  • The EM Navigator/Yorodumi systems omit the EMD- prefix.

Related info.:Q: What is EMD? / ID/Accession-code notation in Yorodumi/EM Navigator

External links:EMDB Accession Codes are Changing Soon! / Contact to PDBj

+
Jul 12, 2017. Major update of PDB

Major update of PDB

  • wwPDB released updated PDB data conforming to the new PDBx/mmCIF dictionary.
  • This is a major update changing the version number from 4 to 5, and with Remediation, in which all the entries are updated.
  • In this update, many items about electron microscopy experimental information are reorganized (e.g. em_software).
  • Now, EM Navigator and Yorodumi are based on the updated data.

External links:wwPDB Remediation / Enriched Model Files Conforming to OneDep Data Standards Now Available in the PDB FTP Archive

-
Yorodumi

Thousand views of thousand structures

  • Yorodumi is a browser for structure data from EMDB, PDB, SASBDB, etc.
  • This page is also the successor to EM Navigator detail page, and also detail information page/front-end page for Omokage search.
  • The word "yorodu" (or yorozu) is an old Japanese word meaning "ten thousand". "mi" (miru) is to see.

Related info.:EMDB / PDB / SASBDB / Comparison of 3 databanks / Yorodumi Search / Aug 31, 2016. New EM Navigator & Yorodumi / Yorodumi Papers / Jmol/JSmol / Function and homology information / Changes in new EM Navigator and Yorodumi

Read more