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- EMDB-30421: Cryo-EM structure of human mitochondrial translocase TOM complex ... -

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Basic information

Entry
Database: EMDB / ID: EMD-30421
TitleCryo-EM structure of human mitochondrial translocase TOM complex at 3.o angstrom.
Map data
Sample
  • Complex: TOM translocase
    • Protein or peptide: Mitochondrial import receptor subunit TOM5 homolog
    • Protein or peptide: Mitochondrial import receptor subunit TOM6 homolog
    • Protein or peptide: Mitochondrial import receptor subunit TOM7 homolog
    • Protein or peptide: Mitochondrial import receptor subunit TOM22 homolog
    • Protein or peptide: Mitochondrial import receptor subunit TOM40 homolog
  • Ligand: 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE
Keywordshuman mitochondrial translocase TOM complex / Outer membrane / TRANSLOCASE
Function / homology
Function and homology information


TOM complex / mitochondrial outer membrane translocase complex / mitochondria-associated endoplasmic reticulum membrane contact site / positive regulation of mitophagy in response to mitochondrial depolarization / protein import into mitochondrial matrix / Mitochondrial protein import / protein targeting to mitochondrion / positive regulation of protein targeting to mitochondrion / protein insertion into mitochondrial outer membrane / porin activity ...TOM complex / mitochondrial outer membrane translocase complex / mitochondria-associated endoplasmic reticulum membrane contact site / positive regulation of mitophagy in response to mitochondrial depolarization / protein import into mitochondrial matrix / Mitochondrial protein import / protein targeting to mitochondrion / positive regulation of protein targeting to mitochondrion / protein insertion into mitochondrial outer membrane / porin activity / pore complex / protein transmembrane transporter activity / monoatomic ion transport / PINK1-PRKN Mediated Mitophagy / regulation of protein stability / mitochondrial outer membrane / mitochondrial inner membrane / mitochondrion / membrane / cytosol
Similarity search - Function
Mitochondrial import receptor subunit TOM5, metazoa / Mitochondrial import receptor subunit TOM6 homologue / Mitochondrial import receptor subunit TOM6 homolog / Mitochondrial import receptor subunit Tom22 / Mitochondrial import receptor subunit TOM7 / Mitochondrial import receptor subunit Tom22 / TOM7 family / Mitochondrial outer membrane translocase complex, subunit Tom5 / Mitochondrial import receptor subunit or translocase / Tom40 ...Mitochondrial import receptor subunit TOM5, metazoa / Mitochondrial import receptor subunit TOM6 homologue / Mitochondrial import receptor subunit TOM6 homolog / Mitochondrial import receptor subunit Tom22 / Mitochondrial import receptor subunit TOM7 / Mitochondrial import receptor subunit Tom22 / TOM7 family / Mitochondrial outer membrane translocase complex, subunit Tom5 / Mitochondrial import receptor subunit or translocase / Tom40 / Eukaryotic porin/Tom40 / Eukaryotic porin / Porin domain superfamily
Similarity search - Domain/homology
Mitochondrial import receptor subunit TOM40 homolog / Mitochondrial import receptor subunit TOM5 homolog / Mitochondrial import receptor subunit TOM6 homolog / Mitochondrial import receptor subunit TOM22 homolog / Mitochondrial import receptor subunit TOM7 homolog
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.0 Å
AuthorsGuan Z / Yan L
CitationJournal: Cell Discov / Year: 2021
Title: Structural insights into assembly of human mitochondrial translocase TOM complex.
Authors: Zeyuan Guan / Ling Yan / Qiang Wang / Liangbo Qi / Sixing Hong / Zhou Gong / Chuangye Yan / Ping Yin /
History
DepositionAug 6, 2020-
Header (metadata) releaseApr 28, 2021-
Map releaseApr 28, 2021-
UpdateMar 27, 2024-
Current statusMar 27, 2024Processing site: PDBj / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.409
  • Imaged by UCSF Chimera
  • Download
  • Surface view colored by cylindrical radius
  • Surface level: 0.409
  • Imaged by UCSF Chimera
  • Download
  • Surface view with fitted model
  • Atomic models: PDB-7cp9
  • Surface level: 0.409
  • Imaged by UCSF Chimera
  • Download
Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_30421.png

Downloads & links

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Map

FileDownload / File: emd_30421.map.gz / Format: CCP4 / Size: 178 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 1.014 Å
Density
Contour LevelBy AUTHOR: 0.409 / Movie #1: 0.409
Minimum - Maximum-2.0641267 - 7.0165772
Average (Standard dev.)-0.001401113 (±0.05051049)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions360360360
Spacing360360360
CellA=B=C: 365.04 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.0141.0141.014
M x/y/z360360360
origin x/y/z0.0000.0000.000
length x/y/z365.040365.040365.040
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ342342342
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS360360360
D min/max/mean-2.0647.017-0.001

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Supplemental data

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Sample components

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Entire : TOM translocase

EntireName: TOM translocase
Components
  • Complex: TOM translocase
    • Protein or peptide: Mitochondrial import receptor subunit TOM5 homolog
    • Protein or peptide: Mitochondrial import receptor subunit TOM6 homolog
    • Protein or peptide: Mitochondrial import receptor subunit TOM7 homolog
    • Protein or peptide: Mitochondrial import receptor subunit TOM22 homolog
    • Protein or peptide: Mitochondrial import receptor subunit TOM40 homolog
  • Ligand: 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE

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Supramolecule #1: TOM translocase

SupramoleculeName: TOM translocase / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 440 kDa/nm

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Macromolecule #1: Mitochondrial import receptor subunit TOM5 homolog

MacromoleculeName: Mitochondrial import receptor subunit TOM5 homolog / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 6.045318 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
MFRIEGLAPK LDPEEMKRKM REDVISSIRN FLIYVALLRV TPFILKKLDS I

UniProtKB: Mitochondrial import receptor subunit TOM5 homolog

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Macromolecule #2: Mitochondrial import receptor subunit TOM6 homolog

MacromoleculeName: Mitochondrial import receptor subunit TOM6 homolog / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 8.007988 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
MASSTVPVSA AGSANETPEI PDNVGDWLRG VYRFATDRND FRRNLILNLG LFAAGVWLAR NLSDIDLMAP QPGV

UniProtKB: Mitochondrial import receptor subunit TOM6 homolog

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Macromolecule #3: Mitochondrial import receptor subunit TOM7 homolog

MacromoleculeName: Mitochondrial import receptor subunit TOM7 homolog / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 6.256473 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
MVKLSKEAKQ RLQQLFKGSQ FAIRWGFIPL VIYLGFKRGA DPGMPEPTVL SLLWG

UniProtKB: Mitochondrial import receptor subunit TOM7 homolog

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Macromolecule #4: Mitochondrial import receptor subunit TOM22 homolog

MacromoleculeName: Mitochondrial import receptor subunit TOM22 homolog / type: protein_or_peptide / ID: 4 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 15.532528 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
MAAAVAAAGA GEPQSPDELL PKGDAEKPEE ELEEDDDEEL DETLSERLWG LTEMFPERVR SAAGATFDLS LFVAQKMYRF SRAALWIGT TSFMILVLPV VFETEKLQME QQQQLQQRQI LLGPNTGLSG GMPGALPSLP GKI

UniProtKB: Mitochondrial import receptor subunit TOM22 homolog

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Macromolecule #5: Mitochondrial import receptor subunit TOM40 homolog

MacromoleculeName: Mitochondrial import receptor subunit TOM40 homolog / type: protein_or_peptide / ID: 5 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 37.926926 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MGNVLAASSP PAGPPPPPAP ALVGLPPPPP SPPGFTLPPL GGSLGAGTST SRSSERTPGA ATASASGAAE DGACGCLPNP GTFEECHRK CKELFPIQME GVKLTVNKGL SNHFQVNHTV ALSTIGESNY HFGVTYVGTK QLSPTEAFPV LVGDMDNSGS L NAQVIHQL ...String:
MGNVLAASSP PAGPPPPPAP ALVGLPPPPP SPPGFTLPPL GGSLGAGTST SRSSERTPGA ATASASGAAE DGACGCLPNP GTFEECHRK CKELFPIQME GVKLTVNKGL SNHFQVNHTV ALSTIGESNY HFGVTYVGTK QLSPTEAFPV LVGDMDNSGS L NAQVIHQL GPGLRSKMAI QTQQSKFVNW QVDGEYRGSD FTAAVTLGNP DVLVGSGILV AHYLQSITPC LALGGELVYH RR PGEEGTV MSLAGKYTLN NWLATVTLGQ AGMHATYYHK ASDQLQVGVE FEASTRMQDT SVSFGYQLDL PKANLLFKGS VDS NWIVGA TLEKKLPPLP LTLALGAFLN HRKNKFQCGF GLTIG

UniProtKB: Mitochondrial import receptor subunit TOM40 homolog

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Macromolecule #6: 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE

MacromoleculeName: 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE / type: ligand / ID: 6 / Number of copies: 11 / Formula: PC1
Molecular weightTheoretical: 790.145 Da
Chemical component information

ChemComp-PC1:
1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE / phospholipid*YM / Phosphatidylcholine

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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

Concentration10 mg/mL
BufferpH: 7.4
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Average electron dose: 60.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: RANDOM CONICAL TILT
Initial angle assignmentType: PROJECTION MATCHING / Software - Name: RELION (ver. 3.0)
Final 3D classificationSoftware - Name: cryoSPARC (ver. 2.15.0)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.0)
Final reconstructionApplied symmetry - Point group: C2 (2 fold cyclic) / Resolution.type: BY AUTHOR / Resolution: 3.0 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. 2.15.0) / Number images used: 360445

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