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- EMDB-0858: Cryo-EM structure of echovirus 11 complexed with its uncoating re... -

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Entry
Database: EMDB / ID: EMD-0858
TitleCryo-EM structure of echovirus 11 complexed with its uncoating receptor FcRn at pH 5.5
Map dataCryo-EM structure of echovirus 11 complexed with its uncoating receptor FcRn at pH 5.5
Sample
  • Complex: Echovirus E11
    • Complex: receptor FcRn
      • Protein or peptide: IgG receptor FcRn large subunit p51
      • Protein or peptide: Beta-2-microglobulin
    • Virus: Echovirus E11
      • Protein or peptide: Capsid protein VP1
      • Protein or peptide: Capsid protein VP2
      • Protein or peptide: Capsid protein VP3
      • Protein or peptide: Capsid protein VP4
KeywordsCryo-EM structure / echovirus 11 / FcRn / pH 5.5 / VIRUS
Function / homology
Function and homology information


IgG immunoglobulin transcytosis in epithelial cells mediated by FcRn immunoglobulin receptor / IgG binding / beta-2-microglobulin binding / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of RIG-I activity / negative regulation of receptor binding / early endosome lumen / Nef mediated downregulation of MHC class I complex cell surface expression / DAP12 interactions / transferrin transport / cellular response to iron ion ...IgG immunoglobulin transcytosis in epithelial cells mediated by FcRn immunoglobulin receptor / IgG binding / beta-2-microglobulin binding / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of RIG-I activity / negative regulation of receptor binding / early endosome lumen / Nef mediated downregulation of MHC class I complex cell surface expression / DAP12 interactions / transferrin transport / cellular response to iron ion / Endosomal/Vacuolar pathway / picornain 2A / symbiont-mediated suppression of host mRNA export from nucleus / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / symbiont genome entry into host cell via pore formation in plasma membrane / peptide antigen assembly with MHC class II protein complex / picornain 3C / cellular response to iron(III) ion / MHC class II protein complex / negative regulation of forebrain neuron differentiation / antigen processing and presentation of exogenous protein antigen via MHC class Ib, TAP-dependent / ER to Golgi transport vesicle membrane / T=pseudo3 icosahedral viral capsid / peptide antigen assembly with MHC class I protein complex / regulation of iron ion transport / regulation of erythrocyte differentiation / HFE-transferrin receptor complex / response to molecule of bacterial origin / MHC class I peptide loading complex / T cell mediated cytotoxicity / positive regulation of T cell cytokine production / antigen processing and presentation of endogenous peptide antigen via MHC class I / antigen processing and presentation of exogenous peptide antigen via MHC class II / positive regulation of immune response / MHC class I protein complex / positive regulation of T cell activation / host cell cytoplasmic vesicle membrane / peptide antigen binding / positive regulation of receptor-mediated endocytosis / negative regulation of neurogenesis / cellular response to nicotine / positive regulation of T cell mediated cytotoxicity / multicellular organismal-level iron ion homeostasis / specific granule lumen / phagocytic vesicle membrane / recycling endosome membrane / Interferon gamma signaling / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / negative regulation of epithelial cell proliferation / MHC class II protein complex binding / Modulation by Mtb of host immune system / late endosome membrane / sensory perception of smell / viral capsid / positive regulation of cellular senescence / tertiary granule lumen / DAP12 signaling / T cell differentiation in thymus / host cell / nucleoside-triphosphate phosphatase / negative regulation of neuron projection development / channel activity / ER-Phagosome pathway / protein refolding / early endosome membrane / monoatomic ion transmembrane transport / protein homotetramerization / amyloid fibril formation / intracellular iron ion homeostasis / learning or memory / DNA replication / RNA helicase activity / endosome membrane / immune response / endocytosis involved in viral entry into host cell / endoplasmic reticulum lumen / Amyloid fiber formation / symbiont-mediated suppression of host gene expression / Golgi membrane / symbiont-mediated activation of host autophagy / lysosomal membrane / external side of plasma membrane / RNA-directed RNA polymerase / cysteine-type endopeptidase activity / viral RNA genome replication / focal adhesion / RNA-directed RNA polymerase activity / DNA-templated transcription / Neutrophil degranulation / symbiont entry into host cell / virion attachment to host cell / host cell nucleus / SARS-CoV-2 activates/modulates innate and adaptive immune responses / structural molecule activity / endoplasmic reticulum / Golgi apparatus / protein homodimerization activity / ATP hydrolysis activity / proteolysis / extracellular space
Similarity search - Function
Picornavirus coat protein VP4 superfamily / Poliovirus 3A protein-like / Poliovirus 3A protein like / Picornavirus 2B protein / Poliovirus core protein 3a, soluble domain / Picornavirus 2B protein / Peptidase C3, picornavirus core protein 2A / Picornavirus core protein 2A / Picornavirus coat protein VP4 / Picornavirus coat protein (VP4) ...Picornavirus coat protein VP4 superfamily / Poliovirus 3A protein-like / Poliovirus 3A protein like / Picornavirus 2B protein / Poliovirus core protein 3a, soluble domain / Picornavirus 2B protein / Peptidase C3, picornavirus core protein 2A / Picornavirus core protein 2A / Picornavirus coat protein VP4 / Picornavirus coat protein (VP4) / Class I Histocompatibility antigen, domains alpha 1 and 2 / Peptidase C3A/C3B, picornaviral / 3C cysteine protease (picornain 3C) / Picornavirales 3C/3C-like protease domain / Picornavirales 3C/3C-like protease domain profile. / Beta-2-Microglobulin / : / MHC class I-like antigen recognition-like / MHC class I-like antigen recognition-like superfamily / Picornavirus capsid / picornavirus capsid protein / Helicase, superfamily 3, single-stranded RNA virus / Superfamily 3 helicase of positive ssRNA viruses domain profile. / Helicase, superfamily 3, single-stranded DNA/RNA virus / RNA helicase / MHC classes I/II-like antigen recognition protein / Picornavirus/Calicivirus coat protein / : / Viral coat protein subunit / Immunoglobulin/major histocompatibility complex, conserved site / Immunoglobulins and major histocompatibility complex proteins signature. / Immunoglobulin C-Type / Immunoglobulin C1-set / Immunoglobulin C1-set domain / RNA-directed RNA polymerase, C-terminal domain / Viral RNA-dependent RNA polymerase / Reverse transcriptase/Diguanylate cyclase domain / Ig-like domain profile. / Immunoglobulin-like domain / Immunoglobulin-like domain superfamily / RNA-directed RNA polymerase, catalytic domain / RdRp of positive ssRNA viruses catalytic domain profile. / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / Immunoglobulin-like fold / Peptidase S1, PA clan, chymotrypsin-like fold / Peptidase S1, PA clan / DNA/RNA polymerase superfamily / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
Genome polyprotein / Genome polyprotein / Genome polyprotein / IgG receptor FcRn large subunit p51 / Beta-2-microglobulin / Genome polyprotein
Similarity search - Component
Biological speciesHomo sapiens (human) / Echovirus E11
Methodsingle particle reconstruction / cryo EM / Resolution: 2.82 Å
AuthorsLiu S / Gao FG
CitationJournal: Chin.Sci.Bull. / Year: 2020
Title: Molecular and structural basis of Echovirus 11 infection by using the dual-receptor system of CD55 and FcRn.
Authors: Niu S / Liu C / Liu C / Liu S / Song Y / Zhang Y / Tian W / Zhao X / Wang P / Gao FG
History
DepositionNov 12, 2019-
Header (metadata) releaseOct 7, 2020-
Map releaseOct 7, 2020-
UpdateJul 2, 2025-
Current statusJul 2, 2025Processing site: PDBj / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.005
  • Imaged by UCSF Chimera
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  • Surface view colored by radius
  • Surface level: 0.005
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6la7
  • Surface level: 0.005
  • Imaged by UCSF Chimera
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  • Simplified surface model + fitted atomic model
  • Atomic modelsPDB-6la7
  • Imaged by Jmol
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_0858.png

Downloads & links

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Map

FileDownload / File: emd_0858.map.gz / Format: CCP4 / Size: 347.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationCryo-EM structure of echovirus 11 complexed with its uncoating receptor FcRn at pH 5.5
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.08 Å/pix.
x 450 pix.
= 486. Å		1.08 Å/pix.
x 450 pix.
= 486. Å		1.08 Å/pix.
x 450 pix.
= 486. Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.08 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.02 / Movie #1: 0.005
Minimum - Maximum-0.018788572 - 0.04230891
Average (Standard dev.)0.00006228081 (±0.0027669668)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions450450450
Spacing450450450
CellA=B=C: 486.00003 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.081.081.08
M x/y/z450450450
origin x/y/z0.0000.0000.000
length x/y/z486.000486.000486.000
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS450450450
D min/max/mean-0.0190.0420.000

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Supplemental data

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Sample components

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Entire : Echovirus E11

EntireName: Echovirus E11
Components
  • Complex: Echovirus E11
    • Complex: receptor FcRn
      • Protein or peptide: IgG receptor FcRn large subunit p51
      • Protein or peptide: Beta-2-microglobulin
    • Virus: Echovirus E11
      • Protein or peptide: Capsid protein VP1
      • Protein or peptide: Capsid protein VP2
      • Protein or peptide: Capsid protein VP3
      • Protein or peptide: Capsid protein VP4

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Supramolecule #1: Echovirus E11

SupramoleculeName: Echovirus E11 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all

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Supramolecule #3: receptor FcRn

SupramoleculeName: receptor FcRn / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #5-#6
Source (natural)Organism: Homo sapiens (human)

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Supramolecule #2: Echovirus E11

SupramoleculeName: Echovirus E11 / type: virus / ID: 2 / Parent: 1 / Macromolecule list: #1-#4 / NCBI-ID: 12078 / Sci species name: Echovirus E11 / Virus type: VIRION / Virus isolate: STRAIN / Virus enveloped: No / Virus empty: No

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Macromolecule #1: Capsid protein VP1

MacromoleculeName: Capsid protein VP1 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Echovirus E11
Molecular weightTheoretical: 32.277359 KDa
SequenceString: VVEAVENAVA RVADTISSGP SNSQAVPALT AVETGHTSQV TPSDTIQTRH VRNYHSRSES SIENFLCRSA CVYMGEYHTT NTDTSKLFA SWTINARRMV QMRRKLELFT YVRFDMEVTF VITSKQDQGT QLGQDMPPLT HQIMYIPPGG PIPKSVTDYT W QTSTNPSI ...String:
VVEAVENAVA RVADTISSGP SNSQAVPALT AVETGHTSQV TPSDTIQTRH VRNYHSRSES SIENFLCRSA CVYMGEYHTT NTDTSKLFA SWTINARRMV QMRRKLELFT YVRFDMEVTF VITSKQDQGT QLGQDMPPLT HQIMYIPPGG PIPKSVTDYT W QTSTNPSI FWTEGNAPPR MSIPFISIGN AYSNFYDGWS HFSQNGVYGY NTLNHMGQIY VRHVNGSSPL PMTSTVRMYF KP KHVKVWV PRPPRLCQYK NASTVNFTPT NITEKRQSIN YIPETVKP

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Macromolecule #2: Capsid protein VP2

MacromoleculeName: Capsid protein VP2 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Echovirus E11
Molecular weightTheoretical: 27.968449 KDa
SequenceString: DRVRSITLGN STITTQESAN VVVAYGRWPE YLKDNEATAE DQPTQPDVAT CRFYTLESVT WERDSPGWWW KFPDALKDMG LFGQNMYYH YLGRAGYTIH VQCNASKFHQ GCLMVVCVPE AEMGCSQVDG TVNEHSLSEG ETAKKFASTS TNGTNTVQSI V TNAGMGVG ...String:
DRVRSITLGN STITTQESAN VVVAYGRWPE YLKDNEATAE DQPTQPDVAT CRFYTLESVT WERDSPGWWW KFPDALKDMG LFGQNMYYH YLGRAGYTIH VQCNASKFHQ GCLMVVCVPE AEMGCSQVDG TVNEHSLSEG ETAKKFASTS TNGTNTVQSI V TNAGMGVG VGNLTIFPHQ WINLRTNNCA TIVMPYINNV PMDNMFRHHN FTLMIIPFVP LDYSSDSSTY VPITVTVAPM CA EYNGLRL ATSL

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Macromolecule #3: Capsid protein VP3

MacromoleculeName: Capsid protein VP3 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Echovirus E11
Molecular weightTheoretical: 26.062578 KDa
SequenceString: GLPVMNTPGS NQFLTSDDFQ SPSAMPQFDV TPELNIPGEV QNLMEIAEVD SVVPVNNVEG KLDTMEIYRI PVQSGNHQSS QVFGFQVQP GLDNVFKHTL LGEILNYYAH WSGSIKLTFV FCGSAMATGK FLLAYAPPGA NAPKSRKDAM LGTHIIWDVG L QSSCVLCI ...String:
GLPVMNTPGS NQFLTSDDFQ SPSAMPQFDV TPELNIPGEV QNLMEIAEVD SVVPVNNVEG KLDTMEIYRI PVQSGNHQSS QVFGFQVQP GLDNVFKHTL LGEILNYYAH WSGSIKLTFV FCGSAMATGK FLLAYAPPGA NAPKSRKDAM LGTHIIWDVG L QSSCVLCI PWISQTHYRL VQQDEYTSAG NVTCWYQTGI VVPAGTPTSC SIMCFVSACN DFSVRLLKDT PFIEQSALLQ

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Macromolecule #4: Capsid protein VP4

MacromoleculeName: Capsid protein VP4 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Echovirus E11
Molecular weightTheoretical: 7.566351 KDa
SequenceString:
MGAQVSTQKT GAHETGLNAA SGRSIIHYTN INYYKDAASN SANRQDFSQD PGKFTEPVKD IMVKSLPALN

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Macromolecule #5: IgG receptor FcRn large subunit p51

MacromoleculeName: IgG receptor FcRn large subunit p51 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 29.294971 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: LSLLYHLTAV SSPAPGTPAF WVSGWLGPQQ YLSYNSLRGE AEPCGAWVWE NQVSWYWEKE TTDLRIKEKL FLEAFKALGG KGPYTLQGL LGCELGPDNT SVPTAKFALN GEEFMNFDLK QGTWGGDWPE ALAISQRWQQ QDKAANKELT FLLFSCPHRL R EHLERGRG ...String:
LSLLYHLTAV SSPAPGTPAF WVSGWLGPQQ YLSYNSLRGE AEPCGAWVWE NQVSWYWEKE TTDLRIKEKL FLEAFKALGG KGPYTLQGL LGCELGPDNT SVPTAKFALN GEEFMNFDLK QGTWGGDWPE ALAISQRWQQ QDKAANKELT FLLFSCPHRL R EHLERGRG NLEWKEPPSM RLKARPSSPG FSVLTCSAFS FYPPELQLRF LRNGLAAGTG QGDFGPNSDG SFHASSSLTV KS GDEHHYC CIVQHAGLAQ PLRVEL

UniProtKB: IgG receptor FcRn large subunit p51

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Macromolecule #6: Beta-2-microglobulin

MacromoleculeName: Beta-2-microglobulin / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 11.74816 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
IQRTPKIQVY SRHPAENGKS NFLNCYVSGF HPSDIEVDLL KNGERIEKVE HSDLSFSKDW SFYLLYYTEF TPTEKDEYAC RVNHVTLSQ PKIVKWDRDM

UniProtKB: Beta-2-microglobulin

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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: 5.5
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: FEI FALCON III (4k x 4k) / Average electron dose: 1.025 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: EMDB MAP
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.82 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 67888
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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