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- EMDB-30320: Echovirus 3 F-particle -

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Basic information

Entry
Database: EMDB / ID: EMD-30320
TitleEchovirus 3 F-particle
Map data
Sample
  • Virus: Echovirus E3
    • Protein or peptide: VP1
    • Protein or peptide: VP2
    • Protein or peptide: VP3
    • Protein or peptide: VP4
  • Ligand: SPHINGOSINE
  • Ligand: MYRISTIC ACID
KeywordsEchovirus B / mature / VIRUS
Function / homology
Function and homology information


symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of RIG-I activity / picornain 2A / symbiont-mediated suppression of host mRNA export from nucleus / symbiont genome entry into host cell via pore formation in plasma membrane / picornain 3C / T=pseudo3 icosahedral viral capsid / host cell cytoplasmic vesicle membrane / : / cytoplasmic vesicle membrane / endocytosis involved in viral entry into host cell ...symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of RIG-I activity / picornain 2A / symbiont-mediated suppression of host mRNA export from nucleus / symbiont genome entry into host cell via pore formation in plasma membrane / picornain 3C / T=pseudo3 icosahedral viral capsid / host cell cytoplasmic vesicle membrane / : / cytoplasmic vesicle membrane / endocytosis involved in viral entry into host cell / viral capsid / nucleoside-triphosphate phosphatase / protein complex oligomerization / monoatomic ion channel activity / symbiont-mediated suppression of host gene expression / DNA replication / RNA helicase activity / symbiont entry into host cell / induction by virus of host autophagy / RNA-directed RNA polymerase / viral RNA genome replication / cysteine-type endopeptidase activity / RNA-dependent RNA polymerase activity / DNA-templated transcription / virion attachment to host cell / structural molecule activity / ATP hydrolysis activity / proteolysis / RNA binding / ATP binding / metal ion binding
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) / Picornavirales 3C/3C-like protease domain / Picornavirales 3C/3C-like protease domain profile. / Peptidase C3A/C3B, picornaviral / 3C cysteine protease (picornain 3C) / 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 / Picornavirus/Calicivirus coat protein / Viral coat protein subunit / RNA-directed RNA polymerase, C-terminal domain / Viral RNA-dependent RNA polymerase / Reverse transcriptase/Diguanylate cyclase domain / 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 / 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 / Genome polyprotein
Similarity search - Component
Biological speciesEchovirus E3
Methodsingle particle reconstruction / cryo EM / Resolution: 3.4 Å
AuthorsWang K / Rao Z
Funding support China, 1 items
OrganizationGrant numberCountry
Chinese Academy of SciencesKJZD-SW-L05 China
CitationJournal: Nat Commun / Year: 2020
Title: Structures of Echovirus 30 in complex with its receptors inform a rational prediction for enterovirus receptor usage.
Authors: Kang Wang / Ling Zhu / Yao Sun / Minhao Li / Xin Zhao / Lunbiao Cui / Li Zhang / George F Gao / Weiwei Zhai / Fengcai Zhu / Zihe Rao / Xiangxi Wang /
Abstract: Receptor usage that determines cell tropism and drives viral classification closely correlates with the virus structure. Enterovirus B (EV-B) consists of several subgroups according to receptor ...Receptor usage that determines cell tropism and drives viral classification closely correlates with the virus structure. Enterovirus B (EV-B) consists of several subgroups according to receptor usage, among which echovirus 30 (E30), a leading causative agent for human aseptic meningitis, utilizes FcRn as an uncoating receptor. However, receptors for many EVs remain unknown. Here we analyzed the atomic structures of E30 mature virion, empty- and A-particles, which reveals serotype-specific epitopes and striking conformational differences between the subgroups within EV-Bs. Of these, the VP1 BC loop markedly distinguishes E30 from other EV-Bs, indicative of a role as a structural marker for EV-B. By obtaining cryo-electron microscopy structures of E30 in complex with its receptor FcRn and CD55 and comparing its homologs, we deciphered the underlying molecular basis for receptor recognition. Together with experimentally derived viral receptor identifications, we developed a structure-based in silico algorithm to inform a rational prediction for EV receptor usage.
History
DepositionJun 8, 2020-
Header (metadata) releaseAug 12, 2020-
Map releaseAug 12, 2020-
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: 0.04
  • Imaged by UCSF Chimera
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  • Surface view colored by radius
  • Surface level: 0.04
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  • Surface view with fitted model
  • Atomic models: PDB-7c9x
  • Surface level: 0.04
  • Imaged by UCSF Chimera
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  • Simplified surface model + fitted atomic model
  • Atomic modelsPDB-7c9x
  • Imaged by Jmol
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_30320.png

Downloads & links

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Map

FileDownload / File: emd_30320.map.gz / Format: CCP4 / Size: 125 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 1.347 Å
Density
Contour LevelBy AUTHOR: 0.04 / Movie #1: 0.04
Minimum - Maximum-0.09359184 - 0.15173258
Average (Standard dev.)0.0019369171 (±0.012218505)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions320320320
Spacing320320320
CellA=B=C: 431.04 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.3471.3471.347
M x/y/z320320320
origin x/y/z0.0000.0000.000
length x/y/z431.040431.040431.040
α/β/γ90.00090.00090.000
start NX/NY/NZ-163-114-126
NX/NY/NZ210124170
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS320320320
D min/max/mean-0.0940.1520.002

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Supplemental data

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Sample components

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Entire : Echovirus E3

EntireName: Echovirus E3
Components
  • Virus: Echovirus E3
    • Protein or peptide: VP1
    • Protein or peptide: VP2
    • Protein or peptide: VP3
    • Protein or peptide: VP4
  • Ligand: SPHINGOSINE
  • Ligand: MYRISTIC ACID

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Supramolecule #1: Echovirus E3

SupramoleculeName: Echovirus E3 / type: virus / ID: 1 / Parent: 0 / Macromolecule list: #1-#4
Details: Particles purified from the cell cultures innoculated with the live E3.
NCBI-ID: 47516 / Sci species name: Echovirus E3 / Virus type: VIRION / Virus isolate: SEROTYPE / Virus enveloped: No / Virus empty: No
Host (natural)Organism: Homo sapiens (human)
Virus shellShell ID: 1 / Diameter: 30.0 Å / T number (triangulation number): 3

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Macromolecule #1: VP1

MacromoleculeName: VP1 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Echovirus E3
Molecular weightTheoretical: 31.761631 KDa
SequenceString: GDVEEAIDRA VARVADTMPT GPRNTESVPA LTAVETGHTS QVVPGDTMQT RHVKNYHSRT ESSIENFLCR AACVYIATYK SAGGTPTER YASWRINTRQ MVQLRRKFEL FTYLRFDMEI TFVITSTQDP GTQLAQDMPV LTHQIMYIPP GGPVPNSATD F AWQSSTNP ...String:
GDVEEAIDRA VARVADTMPT GPRNTESVPA LTAVETGHTS QVVPGDTMQT RHVKNYHSRT ESSIENFLCR AACVYIATYK SAGGTPTER YASWRINTRQ MVQLRRKFEL FTYLRFDMEI TFVITSTQDP GTQLAQDMPV LTHQIMYIPP GGPVPNSATD F AWQSSTNP SIFWTEGCAP ARMSVPFISI GNAYSNFYDG WSHFTQEGVY GFNSLNNMGH IYVRHVNEQS LGVSTSTLRV YF KPKHVRA WVPRPPRLSP YVKSSNVNFK PTAVTTERKD INDVGT

UniProtKB: Genome polyprotein

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Macromolecule #2: VP2

MacromoleculeName: VP2 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Echovirus E3
Molecular weightTheoretical: 29.221725 KDa
SequenceString: SPTVEECGFS DRVRSITLGN STITTQECAN VVVGYGVWPS YLQDNEATAE DQPTQPDVAT CRFYTLDSIQ WQKESDGWWW KFPEALKNM GLFGQNMEYH YLGRSGYTIH VQCNASKFHQ GCLLVVCVPE AEMGCSDVER EVVAASLSSE DTAKSFSRTE S NGQHTVQT ...String:
SPTVEECGFS DRVRSITLGN STITTQECAN VVVGYGVWPS YLQDNEATAE DQPTQPDVAT CRFYTLDSIQ WQKESDGWWW KFPEALKNM GLFGQNMEYH YLGRSGYTIH VQCNASKFHQ GCLLVVCVPE AEMGCSDVER EVVAASLSSE DTAKSFSRTE S NGQHTVQT VVYNAGMGVG VGNLTIFPHQ WINLRTNNSA TIVMPYINSV PMDNMFRHYN FTLMIIPFAK LEYTEQASNY VP ITVTVAP MCAEYNGLRL ASHQ

UniProtKB: Genome polyprotein

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Macromolecule #3: VP3

MacromoleculeName: VP3 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Echovirus E3
Molecular weightTheoretical: 26.281973 KDa
SequenceString: GLPTMLTPGS NQFLTSDDFQ SPSAMPQFDV TPEMKIPGEV HNLMEIAEVD SVVPVNNTKE NINSMEAYRI PVTGGDQLHT QVFGFQMQP GLNSVFKRTL LGEILNYYAH WSGSVKLTFV FCGSAMATGK FLLAYSPPGA SPPQNRKQAM LGTHVIWDVG L QSSCVLCI ...String:
GLPTMLTPGS NQFLTSDDFQ SPSAMPQFDV TPEMKIPGEV HNLMEIAEVD SVVPVNNTKE NINSMEAYRI PVTGGDQLHT QVFGFQMQP GLNSVFKRTL LGEILNYYAH WSGSVKLTFV FCGSAMATGK FLLAYSPPGA SPPQNRKQAM LGTHVIWDVG L QSSCVLCI PWISQTHYRL VQQDEYTSAG YVTCWYQTGL IVPPGAPPSC TILCFASACN DFSVRMLRDT PFIEQTQLLQ

UniProtKB: Genome polyprotein

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Macromolecule #4: VP4

MacromoleculeName: VP4 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Echovirus E3
Molecular weightTheoretical: 7.402076 KDa
SequenceString:
GAQVSTQKTG AHETSLTASG NSTIHYTNIN YYKDAASNSA NRQDFTQDPS KFTEPMKDVM IKSLPALN

UniProtKB: Genome polyprotein

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Macromolecule #5: SPHINGOSINE

MacromoleculeName: SPHINGOSINE / type: ligand / ID: 5 / Number of copies: 1 / Formula: SPH
Molecular weightTheoretical: 299.492 Da
Chemical component information

ChemComp-SPH:
SPHINGOSINE / Sphingosine

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Macromolecule #6: MYRISTIC ACID

MacromoleculeName: MYRISTIC ACID / type: ligand / ID: 6 / Number of copies: 1 / Formula: MYR
Molecular weightTheoretical: 228.371 Da
Chemical component information

ChemComp-MYR:
MYRISTIC ACID / Myristic acid

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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
GridModel: Quantifoil R1.2/1.3 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: PLASMA CLEANING
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Instrument: FEI VITROBOT MARK I

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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: DARK FIELD / Cs: 2.7 mm / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.2 µm
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Average electron dose: 30.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: INSILICO MODEL
Initial angle assignmentType: PROJECTION MATCHING
Final angle assignmentType: PROJECTION MATCHING
Final reconstructionApplied symmetry - Point group: I (icosahedral) / Resolution.type: BY AUTHOR / Resolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.0) / Number images used: 5000

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Atomic model buiding 1

RefinementSpace: REAL / Protocol: RIGID BODY FIT
Output model

PDB-7c9x:
Echovirus 3 F-particle

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