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- EMDB-50200: EVA71 E096A native particle -

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Basic information

Entry
Database: EMDB / ID: EMD-50200
TitleEVA71 E096A native particle
Map data
Sample
  • Virus: Enterovirus A71
    • Protein or peptide: VP0
    • Protein or peptide: VP3
  • Protein or peptide: VP1
  • Ligand: SPHINGOSINE
Keywordsnative provirion intermediate / VIRUS
Function / homology
Function and homology information


symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MDA-5 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 / viral capsid / nucleoside-triphosphate phosphatase / channel activity ...symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MDA-5 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 / viral capsid / nucleoside-triphosphate phosphatase / channel activity / monoatomic ion transmembrane transport / host cell cytoplasm / DNA replication / RNA helicase activity / endocytosis involved in viral entry into host cell / symbiont-mediated suppression of host gene expression / symbiont-mediated activation of host autophagy / RNA-directed RNA polymerase / cysteine-type endopeptidase activity / viral RNA genome replication / RNA-directed RNA polymerase activity / DNA-templated transcription / virion attachment to host cell / host cell nucleus / structural molecule activity / ATP hydrolysis activity / proteolysis / RNA binding / zinc ion binding / ATP binding / membrane
Similarity search - Function
Picornavirus coat protein / 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 / 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) / Peptidase C3A/C3B, picornaviral / 3C cysteine protease (picornain 3C) / Picornavirales 3C/3C-like protease domain / Picornavirales 3C/3C-like protease domain profile. / 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
Similarity search - Component
Biological speciesEnterovirus A71
Methodsingle particle reconstruction / cryo EM / Resolution: 2.5 Å
AuthorsKingston NJ / Stonehouse NJ / Rowlands DJ / Hogle JM / Filman DJ / Snowden JSS
Funding support United States, United Kingdom, 3 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)R01 AI 169457-0 United States
Medical Research Council (MRC, United Kingdom)MR/P022626/1 United Kingdom
Wellcome Trust204825/Z/16/Z United Kingdom
CitationJournal: PLoS Pathog / Year: 2024
Title: Mechanism of enterovirus VP0 maturation cleavage based on the structure of a stabilised assembly intermediate.
Authors: Natalie J Kingston / Joseph S Snowden / Keith Grehan / Philippa K Hall / Eero V Hietanen / Tim C Passchier / Stephen J Polyak / David J Filman / James M Hogle / David J Rowlands / Nicola J Stonehouse /
Abstract: Molecular details of genome packaging are little understood for the majority of viruses. In enteroviruses (EVs), cleavage of the structural protein VP0 into VP4 and VP2 is initiated by the ...Molecular details of genome packaging are little understood for the majority of viruses. In enteroviruses (EVs), cleavage of the structural protein VP0 into VP4 and VP2 is initiated by the incorporation of RNA into the assembling virion and is essential for infectivity. We have applied a combination of bioinformatic, molecular and structural approaches to generate the first high-resolution structure of an intermediate in the assembly pathway, termed a provirion, which contains RNA and intact VP0. We have demonstrated an essential role of VP0 E096 in VP0 cleavage independent of RNA encapsidation and generated a new model of capsid maturation, supported by bioinformatic analysis. This provides a molecular basis for RNA-dependence, where RNA induces conformational changes required for VP0 maturation, but that RNA packaging itself is not sufficient to induce maturation. These data have implications for understanding production of infectious virions and potential relevance for future vaccine and antiviral drug design.
History
DepositionApr 30, 2024-
Header (metadata) releaseSep 4, 2024-
Map releaseSep 4, 2024-
UpdateOct 2, 2024-
Current statusOct 2, 2024Processing site: PDBe / Status: Released

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Structure visualization

Supplemental images

emd_50200.png

Downloads & links

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Map

FileDownload / File: emd_50200.map.gz / Format: CCP4 / Size: 282.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.91 Å/pix.
x 420 pix.
= 382.2 Å		0.91 Å/pix.
x 420 pix.
= 382.2 Å		0.91 Å/pix.
x 420 pix.
= 382.2 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.91 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.025
Minimum - Maximum-0.11899498 - 0.20119385
Average (Standard dev.)0.0013772236 (±0.015034925)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions420420420
Spacing420420420
CellA=B=C: 382.2 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_50200_msk_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 : Enterovirus A71

EntireName: Enterovirus A71
Components
  • Virus: Enterovirus A71
    • Protein or peptide: VP0
    • Protein or peptide: VP3
  • Protein or peptide: VP1
  • Ligand: SPHINGOSINE

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Supramolecule #1: Enterovirus A71

SupramoleculeName: Enterovirus A71 / type: virus / ID: 1 / Parent: 0 / Macromolecule list: #1-#2
Details: Mutant virus recovered from in vitro transcribed RNA
NCBI-ID: 39054 / Sci species name: Enterovirus A71 / Virus type: VIRION / Virus isolate: OTHER / Virus enveloped: No / Virus empty: Yes

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Macromolecule #1: VP0

MacromoleculeName: VP0 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Enterovirus A71
Molecular weightTheoretical: 35.19523 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MGSQVSTQRS GSHENSNSAT EGSTINYTTI NYYKDSYAAT AGKQSLKQDP DKFANPVKDV FTEMAAPLKS PSAEACGYSD RVAQLTIGN STITTQAAAN IIVGYGEWPS YCSDDDATAV DKPTRPDVSV NRFYTLDTKL WEKSSKGWYW KFPDVLTETG V FGQNAQFH ...String:
MGSQVSTQRS GSHENSNSAT EGSTINYTTI NYYKDSYAAT AGKQSLKQDP DKFANPVKDV FTEMAAPLKS PSAEACGYSD RVAQLTIGN STITTQAAAN IIVGYGEWPS YCSDDDATAV DKPTRPDVSV NRFYTLDTKL WEKSSKGWYW KFPDVLTETG V FGQNAQFH YLYRSGFCIH VQCNASKFHQ GALLVAILPE YVIGTVAGGT GTEDSHPPYI QTQPGADGFE LQHPYVLDAG IP ISQLTVC PHQWINLRTN NCATIIVPYM NTLPFDSALN HCNFGLLVVP ISPLDFDQGA TPVIPITITL APMCSEFAGL RQA VTQ

UniProtKB: Genome polyprotein

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Macromolecule #2: VP3

MacromoleculeName: VP3 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Enterovirus A71
Molecular weightTheoretical: 26.540332 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: GFPTELKPGT NQFLTTDDGV SAPILPNFHP TPCIHIPGEV RNLLELCQVE TILEVNNVPT NATSLMERLR FPVSAQAGKG ELCAVFRAD PGRDGPWQST MLGQLCGYYT QWSGSLEVTF MFTGSFMATG KMLIAYTPPG GPLPKDRATA MLGTHVIWDF G LQSSVTLV ...String:
GFPTELKPGT NQFLTTDDGV SAPILPNFHP TPCIHIPGEV RNLLELCQVE TILEVNNVPT NATSLMERLR FPVSAQAGKG ELCAVFRAD PGRDGPWQST MLGQLCGYYT QWSGSLEVTF MFTGSFMATG KMLIAYTPPG GPLPKDRATA MLGTHVIWDF G LQSSVTLV IPWISNTHYR AHARDGVFDY YTTGLVSIWY QTNYVVPIGA PNTAYIIALA AAQKNFTMKL CKDTSHILQT AS IQ

UniProtKB: Genome polyprotein

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Macromolecule #3: VP1

MacromoleculeName: VP1 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO / EC number: picornain 2A
Source (natural)Organism: Enterovirus A71
Molecular weightTheoretical: 32.781805 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: GDRVADMIES SIGNSVSRAL TQALPAPTGQ NTQVSSHRLD TGEVPALQAA EIGASSNTSD ESMIETRCVL NSHSTAETTL DSFFSRAGL VGEIDLPLEG TTNPNGYANW DIDITGYAQM RRKVELFTYM RFDAEFTFVA CTPTGQVVPQ LLQYMFVPPG A PKPESRES ...String:
GDRVADMIES SIGNSVSRAL TQALPAPTGQ NTQVSSHRLD TGEVPALQAA EIGASSNTSD ESMIETRCVL NSHSTAETTL DSFFSRAGL VGEIDLPLEG TTNPNGYANW DIDITGYAQM RRKVELFTYM RFDAEFTFVA CTPTGQVVPQ LLQYMFVPPG A PKPESRES LAWQTATNPS VFVKLTDPPA QVSVPFMSPA SAYQWFYDGY PTFGEHKQEK DLEYGACPNN MMGTFSVRTV GS SKSKYAL VVRIYMRMKH VRAWIPRPMR NQNYLFKANP NYAGDSIKPT GTSRNAITTL

UniProtKB: Genome polyprotein

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Macromolecule #4: SPHINGOSINE

MacromoleculeName: SPHINGOSINE / type: ligand / ID: 4 / Number of copies: 1 / Formula: SPH
Molecular weightTheoretical: 299.492 Da
Chemical component information

ChemComp-SPH:
SPHINGOSINE

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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
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: FEI FALCON IV (4k x 4k) / Average electron dose: 31.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: DIFFRACTION / Nominal defocus max: 3.0 µm / Nominal defocus min: 0.3 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

3vbs

Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.5 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 2739
Initial angle assignmentType: NOT APPLICABLE
Final angle assignmentType: NOT APPLICABLE

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