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- EMDB-21897: The Cryo-EM structure of the ubiquinol oxidase from Escherichia coli -

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Basic information

Entry
Database: EMDB / ID: EMD-21897
TitleThe Cryo-EM structure of the ubiquinol oxidase from Escherichia coli
Map data
Sample
  • Complex: ubiquinol oxidase
    • Protein or peptide: Cytochrome o ubiquinol oxidase, subunit I
    • Protein or peptide: Ubiquinol oxidase subunit 2
    • Protein or peptide: Cytochrome o ubiquinol oxidase
    • Protein or peptide: Cytochrome o ubiquinol oxidase, subunit IV
  • Ligand: PROTOPORPHYRIN IX CONTAINING FE
  • Ligand: HEME O
  • Ligand: COPPER (II) ION
  • Ligand: Ubiquinone-8Coenzyme Q10
  • Ligand: 1,2-Distearoyl-sn-glycerophosphoethanolamine
  • Ligand: pentadecyl(tetradecyl)peroxyanhydride
Keywordsubiquinol oxidase cytochrome bo3 / membrane protein / OXIDOREDUCTASE
Function / homology
Function and homology information


cytochrome bo3 ubiquinol oxidase activity => GO:0009486 / cytochrome o ubiquinol oxidase complex / oxidoreduction-driven active transmembrane transporter activity / ubiquinol oxidase (H+-transporting) / cytochrome bo3 ubiquinol oxidase activity / aerobic electron transport chain / oxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor / ubiquinone binding / electron transport coupled proton transport / cytochrome-c oxidase activity ...cytochrome bo3 ubiquinol oxidase activity => GO:0009486 / cytochrome o ubiquinol oxidase complex / oxidoreduction-driven active transmembrane transporter activity / ubiquinol oxidase (H+-transporting) / cytochrome bo3 ubiquinol oxidase activity / aerobic electron transport chain / oxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor / ubiquinone binding / electron transport coupled proton transport / cytochrome-c oxidase activity / proton transmembrane transporter activity / ATP synthesis coupled electron transport / respirasome / aerobic respiration / respiratory electron transport chain / electron transfer activity / membrane => GO:0016020 / copper ion binding / heme binding / plasma membrane
Similarity search - Function
Cytochrome o ubiquinol oxidase, subunit III / Cytochrome o ubiquinol oxidase subunit IV / Cytochrome o ubiquinol oxidase, subunit I / Ubiquinol oxidase subunit III domain / Cytochrome C oxidase subunit IV, prokaryotes / COX aromatic rich motif / Prokaryotic Cytochrome C oxidase subunit IV / COX Aromatic Rich Motif / Cytochrome o ubiquinol oxidase subunit II / Ubiquinol oxidase subunit 2, cupredoxin domain ...Cytochrome o ubiquinol oxidase, subunit III / Cytochrome o ubiquinol oxidase subunit IV / Cytochrome o ubiquinol oxidase, subunit I / Ubiquinol oxidase subunit III domain / Cytochrome C oxidase subunit IV, prokaryotes / COX aromatic rich motif / Prokaryotic Cytochrome C oxidase subunit IV / COX Aromatic Rich Motif / Cytochrome o ubiquinol oxidase subunit II / Ubiquinol oxidase subunit 2, cupredoxin domain / Cytochrome c oxidase subunit III / Cytochrome c oxidase subunit III-like / Cytochrome c oxidase, subunit III, 4-helical bundle / Cytochrome c oxidase subunit III / Heme-copper oxidase subunit III family profile. / Cytochrome c oxidase subunit III-like superfamily / Cytochrome C oxidase subunit II, transmembrane domain / Cytochrome oxidase subunit II transmembrane region profile. / Cytochrome c/quinol oxidase subunit II / Cytochrome C oxidase subunit II, transmembrane domain superfamily / Cytochrome c oxidase, subunit I, copper-binding site / Heme-copper oxidase catalytic subunit, copper B binding region signature. / Cytochrome c oxidase-like, subunit I domain / Cytochrome oxidase subunit I profile. / Cytochrome c oxidase subunit I / Cytochrome c oxidase-like, subunit I superfamily / Cytochrome C and Quinol oxidase polypeptide I / Cytochrome C oxidase subunit II, periplasmic domain / Cytochrome c oxidase subunit II-like C-terminal / Cytochrome oxidase subunit II copper A binding domain profile. / Cupredoxin / Prokaryotic membrane lipoprotein lipid attachment site profile.
Similarity search - Domain/homology
Ubiquinol oxidase subunit 2 / Cytochrome bo(3) ubiquinol oxidase subunit 3 / Cytochrome bo(3) ubiquinol oxidase subunit 1 / Cytochrome bo(3) ubiquinol oxidase subunit 4 / Cytochrome bo(3) ubiquinol oxidase subunit 1 / Cytochrome bo(3) ubiquinol oxidase subunit 2 / Cytochrome bo(3) ubiquinol oxidase subunit 3 / Cytochrome bo(3) ubiquinol oxidase subunit 4
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.38 Å
AuthorsSu C-C
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID) United States
CitationJournal: Nat Methods / Year: 2021
Title: A 'Build and Retrieve' methodology to simultaneously solve cryo-EM structures of membrane proteins.
Authors: Chih-Chia Su / Meinan Lyu / Christopher E Morgan / Jani Reddy Bolla / Carol V Robinson / Edward W Yu /
Abstract: Single-particle cryo-electron microscopy (cryo-EM) has become a powerful technique in the field of structural biology. However, the inability to reliably produce pure, homogeneous membrane protein ...Single-particle cryo-electron microscopy (cryo-EM) has become a powerful technique in the field of structural biology. However, the inability to reliably produce pure, homogeneous membrane protein samples hampers the progress of their structural determination. Here, we develop a bottom-up iterative method, Build and Retrieve (BaR), that enables the identification and determination of cryo-EM structures of a variety of inner and outer membrane proteins, including membrane protein complexes of different sizes and dimensions, from a heterogeneous, impure protein sample. We also use the BaR methodology to elucidate structural information from Escherichia coli K12 crude membrane and raw lysate. The findings demonstrate that it is possible to solve high-resolution structures of a number of relatively small (<100 kDa) and less abundant (<10%) unidentified membrane proteins within a single, heterogeneous sample. Importantly, these results highlight the potential of cryo-EM for systems structural proteomics.
History
DepositionMay 2, 2020-
Header (metadata) releaseJan 20, 2021-
Map releaseJan 20, 2021-
UpdateMar 6, 2024-
Current statusMar 6, 2024Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.7
  • Imaged by UCSF Chimera
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  • Surface view colored by height
  • Surface level: 0.7
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6wti
  • Surface level: 0.7
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_21897.png

Downloads & links

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Map

FileDownload / File: emd_21897.map.gz / Format: CCP4 / Size: 3.3 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 1.08 Å
Density
Contour LevelBy AUTHOR: 0.7 / Movie #1: 0.7
Minimum - Maximum-3.6237965 - 6.270592
Average (Standard dev.)-0.000000000007136 (±0.41026497)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderZYX
Origin10810495
Dimensions8597106
Spacing1068597
CellA: 114.48 Å / B: 91.8 Å / C: 104.76 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.081.081.08
M x/y/z1068597
origin x/y/z0.0000.0000.000
length x/y/z114.48091.800104.760
α/β/γ90.00090.00090.000
start NX/NY/NZ95108104
NX/NY/NZ1068597
MAP C/R/S321
start NC/NR/NS10410895
NC/NR/NS9785106
D min/max/mean-3.6246.271-0.000

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Supplemental data

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Additional map: #1

Fileemd_21897_additional_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : ubiquinol oxidase

EntireName: ubiquinol oxidase
Components
  • Complex: ubiquinol oxidase
    • Protein or peptide: Cytochrome o ubiquinol oxidase, subunit I
    • Protein or peptide: Ubiquinol oxidase subunit 2
    • Protein or peptide: Cytochrome o ubiquinol oxidase
    • Protein or peptide: Cytochrome o ubiquinol oxidase, subunit IV
  • Ligand: PROTOPORPHYRIN IX CONTAINING FE
  • Ligand: HEME O
  • Ligand: COPPER (II) ION
  • Ligand: Ubiquinone-8Coenzyme Q10
  • Ligand: 1,2-Distearoyl-sn-glycerophosphoethanolamine
  • Ligand: pentadecyl(tetradecyl)peroxyanhydride

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Supramolecule #1: ubiquinol oxidase

SupramoleculeName: ubiquinol oxidase / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#4
Source (natural)Organism: Escherichia coli (E. coli)

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Macromolecule #1: Cytochrome o ubiquinol oxidase, subunit I

MacromoleculeName: Cytochrome o ubiquinol oxidase, subunit I / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
EC number: Oxidoreductases; Acting on diphenols and related substances as donors; With oxygen as acceptor
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 74.424469 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MFGKLSLDAV PFHEPIVMVT IAGIILGGLA LVGLITYFGK WTYLWKEWLT SVDHKRLGIM YIIVAIVMLL RGFADAIMMR SQQALASAG EAGFLPPHHY DQIFTAHGVI MIFFVAMPFV IGLMNLVVPL QIGARDVAFP FLNNLSFWFT VVGVILVNVS L GVGEFAQT ...String:
MFGKLSLDAV PFHEPIVMVT IAGIILGGLA LVGLITYFGK WTYLWKEWLT SVDHKRLGIM YIIVAIVMLL RGFADAIMMR SQQALASAG EAGFLPPHHY DQIFTAHGVI MIFFVAMPFV IGLMNLVVPL QIGARDVAFP FLNNLSFWFT VVGVILVNVS L GVGEFAQT GWLAYPPLSG IEYSPGVGVD YWIWSLQLSG IGTTLTGINF FVTILKMRAP GMTMFKMPVF TWASLCANVL II ASFPILT VTVALLTLDR YLGTHFFTND MGGNMMMYIN LIWAWGHPEV YILILPVFGV FSEIAATFSR KRLFGYTSLV WAT VCITVL SFIVWLHHFF TMGAGANVNA FFGITTMIIA IPTGVKIFNW LFTMYQGRIV FHSAMLWTIG FIVTFSVGGM TGVL LAVPG ADFVLHNSLF LIAHFHNVII GGVVFGCFAG MTYWWPKAFG FKLNETWGKR AFWFWIIGFF VAFMPLYALG FMGMT RRLS QQIDPQFHTM LMIAASGAVL IALGILCLVI QMYVSIRDRD QNRDLTGDPW GGRTLEWATS SPPPFYNFAV VPHVHE RDA FWEMKEKGEA YKKPDHYEEI HMPKNSGAGI VIAAFSTIFG FAMIWHIWWL AIVGFAGMII TWIVKSFDED VDYYVPV AE IEKLENQHFD EITKAGLKNG N

UniProtKB: Cytochrome bo(3) ubiquinol oxidase subunit 1

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Macromolecule #2: Ubiquinol oxidase subunit 2

MacromoleculeName: Ubiquinol oxidase subunit 2 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 34.947203 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MRLRKYNKSL GWLSLFAGTV LLSGCNSALL DPKGQIGLEQ RSLILTAFGL MLIVVIPAIL MAVGFAWKYR ASNKDAKYSP NWSHSNKVE AVVWTVPILI IIFLAVLTWK TTHALEPSKP LAHDEKPITI EVVSMDWKWF FIYPEQGIAT VNEIAFPANT P VYFKVTSN ...String:
MRLRKYNKSL GWLSLFAGTV LLSGCNSALL DPKGQIGLEQ RSLILTAFGL MLIVVIPAIL MAVGFAWKYR ASNKDAKYSP NWSHSNKVE AVVWTVPILI IIFLAVLTWK TTHALEPSKP LAHDEKPITI EVVSMDWKWF FIYPEQGIAT VNEIAFPANT P VYFKVTSN SVMNSFFIPR LGSQIYAMAG MQTRLHLIAN EPGTYDGISA SYSGPGFSGM KFKAIATPDR AAFDQWVAKA KQ SPNTMSD MAAFEKLAAP SEYNQVEYFS NVKPDLFADV INKFMAHGKS MDMTQPEGEH SAHEGMEGMD MSHAESAH

UniProtKB: Ubiquinol oxidase subunit 2

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Macromolecule #3: Cytochrome o ubiquinol oxidase

MacromoleculeName: Cytochrome o ubiquinol oxidase / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 22.642566 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MATDTLTHAT AHAHEHGHHD AGGTKIFGFW IYLMSDCILF SILFATYAVL VNGTAGGPTG KDIFELPFVL VETFLLLFSS ITYGMAAIA MYKNNKSQVI SWLALTWLFG AGFIGMEIYE FHHLIVNGMG PDRSGFLSAF FALVGTHGLH VTSGLIWMAV L MVQIARRG ...String:
MATDTLTHAT AHAHEHGHHD AGGTKIFGFW IYLMSDCILF SILFATYAVL VNGTAGGPTG KDIFELPFVL VETFLLLFSS ITYGMAAIA MYKNNKSQVI SWLALTWLFG AGFIGMEIYE FHHLIVNGMG PDRSGFLSAF FALVGTHGLH VTSGLIWMAV L MVQIARRG LTSTNRTRIM CLSLFWHFLD VVWICVFTVV YLMGAM

UniProtKB: Cytochrome bo(3) ubiquinol oxidase subunit 3

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Macromolecule #4: Cytochrome o ubiquinol oxidase, subunit IV

MacromoleculeName: Cytochrome o ubiquinol oxidase, subunit IV / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
EC number: Oxidoreductases; Acting on diphenols and related substances as donors; With oxygen as acceptor
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 12.037402 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MSHSTDHSGA SHGSVKTYMT GFILSIILTV IPFWMVMTGA ASPAVILGTI LAMAVVQVLV HLVCFLHMNT KSDEGWNMTA FVFTVLIIA ILVVGSIWIM WNLNYNMMMH

UniProtKB: Cytochrome bo(3) ubiquinol oxidase subunit 4

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Macromolecule #5: PROTOPORPHYRIN IX CONTAINING FE

MacromoleculeName: PROTOPORPHYRIN IX CONTAINING FE / type: ligand / ID: 5 / Number of copies: 1 / Formula: HEM
Molecular weightTheoretical: 616.487 Da
Chemical component information

ChemComp-HEM:
PROTOPORPHYRIN IX CONTAINING FE / Heme B

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Macromolecule #6: HEME O

MacromoleculeName: HEME O / type: ligand / ID: 6 / Number of copies: 1 / Formula: HEO
Molecular weightTheoretical: 838.854 Da
Chemical component information

ChemComp-HEO:
HEME O / Heme O

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Macromolecule #7: COPPER (II) ION

MacromoleculeName: COPPER (II) ION / type: ligand / ID: 7 / Number of copies: 1 / Formula: CU
Molecular weightTheoretical: 63.546 Da
Chemical component information

ChemComp-CU:
COPPER (II) ION / Copper

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Macromolecule #8: Ubiquinone-8

MacromoleculeName: Ubiquinone-8 / type: ligand / ID: 8 / Number of copies: 1 / Formula: UQ8
Molecular weightTheoretical: 727.109 Da
Chemical component information

ChemComp-UQ8:
Ubiquinone-8

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Macromolecule #9: 1,2-Distearoyl-sn-glycerophosphoethanolamine

MacromoleculeName: 1,2-Distearoyl-sn-glycerophosphoethanolamine / type: ligand / ID: 9 / Number of copies: 9 / Formula: 3PE
Molecular weightTheoretical: 748.065 Da
Chemical component information

ChemComp-3PE:
1,2-Distearoyl-sn-glycerophosphoethanolamine / phospholipid*YM / Phosphatidylethanolamine

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Macromolecule #10: pentadecyl(tetradecyl)peroxyanhydride

MacromoleculeName: pentadecyl(tetradecyl)peroxyanhydride / type: ligand / ID: 10 / Number of copies: 1 / Formula: U9V
Molecular weightTheoretical: 524.859 Da
Chemical component information

ChemComp-U9V:
pentadecyl(tetradecyl)peroxyanhydride

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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

Concentration0.5 mg/mL
BufferpH: 7.5
GridModel: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 300 / Pretreatment - Type: GLOW DISCHARGE
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 K3 BIOQUANTUM (6k x 4k) / Average electron dose: 50.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: NONE
Initial angle assignmentType: ANGULAR RECONSTITUTION
Final angle assignmentType: ANGULAR RECONSTITUTION
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.38 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 334222

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