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- PDB-7ozj: CryoEM structure of human enterovirus 70 empty particle -

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Basic information

Entry
Database: PDB / ID: 7ozj
TitleCryoEM structure of human enterovirus 70 empty particle
Components
  • VP1
  • VP2
  • VP3
KeywordsVIRUS / enterovirus / empty particle / human enterovirus / acute hemorrhagic conjunctivitis
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 / endocytosis involved in viral entry into host cell / nucleoside-triphosphate phosphatase ...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 / endocytosis involved in viral entry into host cell / nucleoside-triphosphate phosphatase / protein complex oligomerization / monoatomic ion channel activity / symbiont-mediated suppression of host gene expression / DNA replication / RNA helicase activity / 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 / host cell nucleus / virion attachment to host cell / structural molecule activity / ATP hydrolysis activity / proteolysis / RNA binding / ATP binding / membrane / metal ion binding
Similarity search - Function
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 ...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
Biological speciesHuman enterovirus 70
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.29 Å
AuthorsFuzik, T. / Plevka, P. / Moravcova, J.
Funding support Czech Republic, 1items
OrganizationGrant numberCountry
Grant Agency of the Czech RepublicGX19-25982X Czech Republic
CitationJournal: J Virol / Year: 2022
Title: Structure of Human Enterovirus 70 and Its Inhibition by Capsid-Binding Compounds.
Authors: Tibor Füzik / Jana Moravcová / Sergei Kalynych / Pavel Plevka /
Abstract: Enterovirus 70 (EV70) is a human pathogen belonging to the family . EV70 is transmitted by eye secretions and causes acute hemorrhagic conjunctivitis, a serious eye disease. Despite the severity of ...Enterovirus 70 (EV70) is a human pathogen belonging to the family . EV70 is transmitted by eye secretions and causes acute hemorrhagic conjunctivitis, a serious eye disease. Despite the severity of the disease caused by EV70, its structure is unknown. Here, we present the structures of the EV70 virion, altered particle, and empty capsid determined by cryo-electron microscopy. The capsid of EV70 is composed of the subunits VP1, VP2, VP3, and VP4. The partially collapsed hydrophobic pocket located in VP1 of the EV70 virion is not occupied by a pocket factor, which is commonly present in other enteroviruses. Nevertheless, we show that the pocket can be targeted by the antiviral compounds WIN51711 and pleconaril, which block virus infection. The inhibitors prevent genome release by stabilizing EV70 particles. Knowledge of the structures of complexes of EV70 with inhibitors will enable the development of capsid-binding therapeutics against this virus. Globally distributed enterovirus 70 (EV70) causes local outbreaks of acute hemorrhagic conjunctivitis. The discharge from infected eyes enables the high-efficiency transmission of EV70 in overcrowded areas with low hygienic standards. Currently, only symptomatic treatments are available. We determined the structures of EV70 in its native form, the genome release intermediate, and the empty capsid resulting from genome release. Furthermore, we elucidated the structures of EV70 in complex with two inhibitors that block virus infection, and we describe the mechanism of their binding to the virus capsid. These results enable the development of therapeutics against EV70.
History
DepositionJun 28, 2021Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jul 13, 2022Provider: repository / Type: Initial release
Revision 1.1Aug 17, 2022Group: Database references / Category: citation
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year
Revision 1.2Sep 28, 2022Group: Data collection / Database references / Category: citation / em_imaging
Item: _citation.journal_volume / _em_imaging.nominal_defocus_max / _em_imaging.nominal_defocus_min

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: VP1
B: VP2
C: VP3


Theoretical massNumber of molelcules
Total (without water)88,2323
Polymers88,2323
Non-polymers00
Water0
1
A: VP1
B: VP2
C: VP3
x 60


Theoretical massNumber of molelcules
Total (without water)5,293,941180
Polymers5,293,941180
Non-polymers00
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
point symmetry operation59
Noncrystallographic symmetry (NCS)NCS oper:
IDCodeMatrix
1generate(1), (1), (1)
2generate(-0.809017, -0.5, 0.309017), (-0.5, 0.309017, -0.809017), (0.309017, -0.809017, -0.5)
3generate(1), (-1), (-1)
4generate(0.809017, -0.5, -0.309017), (-0.5, -0.309017, -0.809017), (0.309017, 0.809017, -0.5)
5generate(0.5, 0.309017, -0.809017), (-0.309017, -0.809017, -0.5), (-0.809017, 0.5, -0.309017)
6generate(-0.309017, -0.809017, -0.5), (-0.809017, 0.5, -0.309017), (0.5, 0.309017, -0.809017)
7generate(-0.809017, 0.5, -0.309017), (0.5, 0.309017, -0.809017), (-0.309017, -0.809017, -0.5)
8generate(-0.809017, -0.5, -0.309017), (0.5, -0.309017, -0.809017), (0.309017, -0.809017, 0.5)
9generate(-0.309017, 0.809017, -0.5), (-0.809017, -0.5, -0.309017), (-0.5, 0.309017, 0.809017)
10generate(0.5, -0.309017, -0.809017), (-0.309017, 0.809017, -0.5), (0.809017, 0.5, 0.309017)
11generate(-1), (-1), (1)
12generate(-0.5, -0.309017, -0.809017), (0.309017, 0.809017, -0.5), (0.809017, -0.5, -0.309017)
13generate(-0.5, 0.309017, -0.809017), (0.309017, -0.809017, -0.5), (-0.809017, -0.5, 0.309017)
14generate(-0.309017, -0.809017, -0.5), (0.809017, -0.5, 0.309017), (-0.5, -0.309017, 0.809017)
15generate(-0.809017, 0.5, -0.309017), (-0.5, -0.309017, 0.809017), (0.309017, 0.809017, 0.5)
16generate(0.5, 0.309017, -0.809017), (0.309017, 0.809017, 0.5), (0.809017, -0.5, 0.309017)
17generate(-0.5, 0.309017, -0.809017), (-0.309017, 0.809017, 0.5), (0.809017, 0.5, -0.309017)
18generate(-1), (1), (-1)
19generate(-0.5, -0.309017, -0.809017), (-0.309017, -0.809017, 0.5), (-0.809017, 0.5, 0.309017)
20generate(-1), (1), (-1)
21generate(-0.809017, 0.5, 0.309017), (0.5, 0.309017, 0.809017), (0.309017, 0.809017, -0.5)
22generate(0.809017, 0.5, -0.309017), (0.5, -0.309017, 0.809017), (0.309017, -0.809017, -0.5)
23generate(-0.309017, 0.809017, -0.5), (0.809017, 0.5, 0.309017), (0.5, -0.309017, -0.809017)
24generate(0.5, -0.309017, -0.809017), (0.309017, -0.809017, 0.5), (-0.809017, -0.5, -0.309017)
25generate(-0.809017, -0.5, -0.309017), (-0.5, 0.309017, 0.809017), (-0.309017, 0.809017, -0.5)
26generate(-0.309017, -0.809017, 0.5), (-0.809017, 0.5, 0.309017), (-0.5, -0.309017, -0.809017)
27generate(-0.309017, 0.809017, 0.5), (0.809017, 0.5, -0.309017), (-0.5, 0.309017, -0.809017)
28generate(1), (-1), (-1)
29generate(0.309017, 0.809017, -0.5), (0.809017, -0.5, -0.309017), (-0.5, -0.309017, -0.809017)
30generate(0.309017, -0.809017, -0.5), (-0.809017, -0.5, 0.309017), (-0.5, 0.309017, -0.809017)
31generate(-1), (1), (-1)
32generate(0.809017, 0.5, -0.309017), (-0.5, 0.309017, -0.809017), (-0.309017, 0.809017, 0.5)
33generate(-1), (-1), (1)
34generate(-0.809017, 0.5, 0.309017), (-0.5, -0.309017, -0.809017), (-0.309017, -0.809017, 0.5)
35generate(-0.5, -0.309017, 0.809017), (-0.309017, -0.809017, -0.5), (0.809017, -0.5, 0.309017)
36generate(0.309017, 0.809017, 0.5), (-0.809017, 0.5, -0.309017), (-0.5, -0.309017, 0.809017)
37generate(0.809017, -0.5, 0.309017), (0.5, 0.309017, -0.809017), (0.309017, 0.809017, 0.5)
38generate(0.809017, 0.5, 0.309017), (0.5, -0.309017, -0.809017), (-0.309017, 0.809017, -0.5)
39generate(0.309017, -0.809017, 0.5), (-0.809017, -0.5, -0.309017), (0.5, -0.309017, -0.809017)
40generate(-0.5, 0.309017, 0.809017), (-0.309017, 0.809017, -0.5), (-0.809017, -0.5, -0.309017)
41generate(1), (-1), (-1)
42generate(0.5, 0.309017, 0.809017), (0.309017, 0.809017, -0.5), (-0.809017, 0.5, 0.309017)
43generate(0.5, -0.309017, 0.809017), (0.309017, -0.809017, -0.5), (0.809017, 0.5, -0.309017)
44generate(0.309017, 0.809017, 0.5), (0.809017, -0.5, 0.309017), (0.5, 0.309017, -0.809017)
45generate(0.809017, -0.5, 0.309017), (-0.5, -0.309017, 0.809017), (-0.309017, -0.809017, -0.5)
46generate(-0.5, -0.309017, 0.809017), (0.309017, 0.809017, 0.5), (-0.809017, 0.5, -0.309017)
47generate(0.5, -0.309017, 0.809017), (-0.309017, 0.809017, 0.5), (-0.809017, -0.5, 0.309017)
48generate(1), (1), (1)
49generate(0.5, 0.309017, 0.809017), (-0.309017, -0.809017, 0.5), (0.809017, -0.5, -0.309017)
50generate(1), (1), (1)
51generate(0.809017, -0.5, -0.309017), (0.5, 0.309017, 0.809017), (-0.309017, -0.809017, 0.5)
52generate(-0.809017, -0.5, 0.309017), (0.5, -0.309017, 0.809017), (-0.309017, 0.809017, 0.5)
53generate(0.309017, -0.809017, 0.5), (0.809017, 0.5, 0.309017), (-0.5, 0.309017, 0.809017)
54generate(-0.5, 0.309017, 0.809017), (0.309017, -0.809017, 0.5), (0.809017, 0.5, 0.309017)
55generate(0.809017, 0.5, 0.309017), (-0.5, 0.309017, 0.809017), (0.309017, -0.809017, 0.5)
56generate(0.309017, 0.809017, -0.5), (-0.809017, 0.5, 0.309017), (0.5, 0.309017, 0.809017)
57generate(0.309017, -0.809017, -0.5), (0.809017, 0.5, -0.309017), (0.5, -0.309017, 0.809017)
58generate(-1), (-1), (1)
59generate(-0.309017, -0.809017, 0.5), (0.809017, -0.5, -0.309017), (0.5, 0.309017, 0.809017)
60generate(-0.309017, 0.809017, 0.5), (-0.809017, -0.5, 0.309017), (0.5, -0.309017, 0.809017)

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Components

#1: Protein VP1


Mass: 34049.793 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Human enterovirus 70 / Cell line: hTERT RPE1 / Strain: J670/71 / References: UniProt: P32537
#2: Protein VP2


Mass: 27536.107 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Human enterovirus 70 / Cell line: hTERT RPE1 / Strain: J670/71 / References: UniProt: P32537
#3: Protein VP3


Mass: 26646.455 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Human enterovirus 70 / Cell line: hTERT RPE1 / Strain: J670/71 / References: UniProt: P32537

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Human enterovirus 70 (strain J670/71) / Type: VIRUS / Entity ID: all / Source: NATURAL
Molecular weightValue: 5.4 MDa / Experimental value: NO
Source (natural)Organism: Human enterovirus 70 / Strain: J670/71
Details of virusEmpty: YES / Enveloped: NO / Isolate: STRAIN / Type: VIRION
Virus shellName: Capsid / Diameter: 337 nm / Triangulation number (T number): 1
Buffer solutionpH: 7
SpecimenConc.: 2 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R2/1
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 278 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy / Nominal magnification: 75000 X / Nominal defocus max: 3000 nm / Nominal defocus min: 1000 nm / Cs: 2.7 mm / C2 aperture diameter: 70 µm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 1 sec. / Electron dose: 48 e/Å2 / Detector mode: INTEGRATING / Film or detector model: FEI FALCON II (4k x 4k) / Num. of grids imaged: 2 / Num. of real images: 6698
Image scansSampling size: 14 µm / Width: 4096 / Height: 4096 / Movie frames/image: 16 / Used frames/image: 1-16

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Processing

EM software
IDNameVersionCategoryDetails
1crYOLO1.5.3particle selection
2EPU1.8image acquisition
4GctfCTF correctionCTF estimation
5RELION3.1CTF correctionCTF refinemnt, correction
8UCSF Chimeramodel fitting
9Cootmodel fitting
11RELION3.1initial Euler assignment
12RELION3.1final Euler assignment
13RELION3.1classification
14RELION3.13D reconstruction
15ISOLDEmodel refinement
Image processingDetails: Movie frames motion corrected (MotionCor 2)
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 10524 / Details: autopicking
SymmetryPoint symmetry: I (icosahedral)
3D reconstructionResolution: 4.29 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 1221 / Algorithm: FOURIER SPACE / Num. of class averages: 1 / Symmetry type: POINT
Atomic model buildingB value: 110 / Protocol: FLEXIBLE FIT

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