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- EMDB-0103: Identification of a druggable VP1-VP3 interprotomer pocket in the... -

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Basic information

Entry
Database: EMDB / ID: EMD-0103
TitleIdentification of a druggable VP1-VP3 interprotomer pocket in the capsid of enteroviruses
Map dataCoxsackievirus B3 Nancy in complex with a small-molecule inhibitor
Sample
  • Virus: Coxsackievirus B3 (strain Nancy)
    • Protein or peptide: Capsid protein VP1
    • Protein or peptide: Capsid protein VP2
    • Protein or peptide: Capsid protein VP3
    • Protein or peptide: Capsid protein VP4
  • Ligand: 4-[[4-[1,3-bis(oxidanylidene)isoindol-2-yl]phenyl]sulfonylamino]benzoic acid
Function / homology
Function and homology information


: / symbiont-mediated perturbation of host gene expression / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MDA-5 activity / 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-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MAVS activity / symbiont genome entry into host cell via pore formation in plasma membrane / picornain 3C / T=pseudo3 icosahedral viral capsid ...: / symbiont-mediated perturbation of host gene expression / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MDA-5 activity / 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-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MAVS activity / 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 / RNA helicase activity / DNA replication / induction by virus of host autophagy / RNA-directed RNA polymerase / symbiont-mediated suppression of host gene expression / viral RNA genome replication / cysteine-type endopeptidase activity / RNA-dependent RNA polymerase activity / DNA-templated transcription / host cell nucleus / structural molecule activity / virion attachment to host cell / ATP hydrolysis activity / proteolysis / RNA binding / ATP binding / membrane / 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 / DNA/RNA polymerase superfamily / Peptidase S1, PA clan / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
Biological speciesCoxsackievirus B3 (strain Nancy)
Methodsingle particle reconstruction / cryo EM / Resolution: 4.0 Å
AuthorsGeraets JA / Flatt JW / Domanska A / Butcher SJ
Funding support Finland, 1 items
OrganizationGrant numberCountry
European Union612308 Finland
CitationJournal: PLoS Biol / Year: 2019
Title: A novel druggable interprotomer pocket in the capsid of rhino- and enteroviruses.
Authors: Rana Abdelnabi / James A Geraets / Yipeng Ma / Carmen Mirabelli / Justin W Flatt / Aušra Domanska / Leen Delang / Dirk Jochmans / Timiri Ajay Kumar / Venkatesan Jayaprakash / Barij Nayan ...Authors: Rana Abdelnabi / James A Geraets / Yipeng Ma / Carmen Mirabelli / Justin W Flatt / Aušra Domanska / Leen Delang / Dirk Jochmans / Timiri Ajay Kumar / Venkatesan Jayaprakash / Barij Nayan Sinha / Pieter Leyssen / Sarah J Butcher / Johan Neyts /
Abstract: Rhino- and enteroviruses are important human pathogens, against which no antivirals are available. The best-studied inhibitors are "capsid binders" that fit in a hydrophobic pocket of the viral ...Rhino- and enteroviruses are important human pathogens, against which no antivirals are available. The best-studied inhibitors are "capsid binders" that fit in a hydrophobic pocket of the viral capsid. Employing a new class of entero-/rhinovirus inhibitors and by means of cryo-electron microscopy (EM), followed by resistance selection and reverse genetics, we discovered a hitherto unknown druggable pocket that is formed by viral proteins VP1 and VP3 and that is conserved across entero-/rhinovirus species. We propose that these inhibitors stabilize a key region of the virion, thereby preventing the conformational expansion needed for viral RNA release. A medicinal chemistry effort resulted in the identification of analogues targeting this pocket with broad-spectrum activity against Coxsackieviruses B (CVBs) and compounds with activity against enteroviruses (EV) of groups C and D, and even rhinoviruses (RV). Our findings provide novel insights in the biology of the entry of entero-/rhinoviruses and open new avenues for the design of broad-spectrum antivirals against these pathogens.
History
DepositionJul 5, 2018-
Header (metadata) releaseOct 24, 2018-
Map releaseJun 5, 2019-
UpdateNov 25, 2020-
Current statusNov 25, 2020Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.018
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  • Surface level: 0.018
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  • Surface view with fitted model
  • Atomic models: PDB-6gzv
  • Surface level: 0.018
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  • Simplified surface model + fitted atomic model
  • Atomic modelsPDB-6gzv
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_0103.png

Downloads & links

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Map

FileDownload / File: emd_0103.map.gz / Format: CCP4 / Size: 163.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationCoxsackievirus B3 Nancy in complex with a small-molecule inhibitor
Voxel sizeX=Y=Z: 1.048 Å
Density
Contour LevelBy AUTHOR: 0.018 / Movie #1: 0.018
Minimum - Maximum-0.051150657 - 0.1611951
Average (Standard dev.)0.0032831568 (±0.009124994)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions350350350
Spacing350350350
CellA=B=C: 366.8 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.0481.0481.048
M x/y/z350350350
origin x/y/z0.0000.0000.000
length x/y/z366.800366.800366.800
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS350350350
D min/max/mean-0.0510.1610.003

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Supplemental data

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Half map: #2

Fileemd_0103_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_0103_half_map_2.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 : Coxsackievirus B3 (strain Nancy)

EntireName: Coxsackievirus B3 (strain Nancy)
Components
  • Virus: Coxsackievirus B3 (strain Nancy)
    • Protein or peptide: Capsid protein VP1
    • Protein or peptide: Capsid protein VP2
    • Protein or peptide: Capsid protein VP3
    • Protein or peptide: Capsid protein VP4
  • Ligand: 4-[[4-[1,3-bis(oxidanylidene)isoindol-2-yl]phenyl]sulfonylamino]benzoic acid

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Supramolecule #1: Coxsackievirus B3 (strain Nancy)

SupramoleculeName: Coxsackievirus B3 (strain Nancy) / type: virus / ID: 1 / Parent: 0 / Macromolecule list: #1-#4
Details: Coxsackievirus B3 (strain Nancy) NCBI Taxonomy ID: 103903 Full, non-enveloped virion from natural source Diameter: ~314A Triangulation: 1 (pT3) Benzene sulfonamide derivative Molecular ...Details: Coxsackievirus B3 (strain Nancy) NCBI Taxonomy ID: 103903 Full, non-enveloped virion from natural source Diameter: ~314A Triangulation: 1 (pT3) Benzene sulfonamide derivative Molecular weight: 422Da Binding sites on capsid: 60
NCBI-ID: 103903 / Sci species name: Coxsackievirus B3 (strain Nancy) / Virus type: VIRION / Virus isolate: STRAIN / Virus enveloped: No / Virus empty: No
Host (natural)Organism: Homo sapiens (human)
Virus shellShell ID: 1 / Diameter: 314.0 Å / T number (triangulation number): 1

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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 / EC number: picornain 2A
Source (natural)Organism: Coxsackievirus B3 (strain Nancy) / Strain: Nancy
Molecular weightTheoretical: 31.639438 KDa
SequenceString: GPVEDAITAA IGRVADTVGT GPTNSEAIPA LTAAETGHTS QVVPGDTMQT RHVKNYHSRS ESTIENFLCR SACVYFTEYK NSGAKRYAE WVLTPRQAAQ LRRKLEFFTY VRFDLELTFV ITSTQQPSTT QNQDAQILTH QIMYVPPGGP VPDKVDSYVW Q TSTNPSVF ...String:
GPVEDAITAA IGRVADTVGT GPTNSEAIPA LTAAETGHTS QVVPGDTMQT RHVKNYHSRS ESTIENFLCR SACVYFTEYK NSGAKRYAE WVLTPRQAAQ LRRKLEFFTY VRFDLELTFV ITSTQQPSTT QNQDAQILTH QIMYVPPGGP VPDKVDSYVW Q TSTNPSVF WTEGNAPPRM SIPFLSIGNA YSNFYDGWSE FSRNGVYGIN TLNNMGTLYA RHVNAGSTGP IKSTIRIYFK PK HVKAWIP RPPRLCQYEK AKNVNFQPSG VTTTRQSITT MTNTGAF

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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 / EC number: picornain 2A
Source (natural)Organism: Coxsackievirus B3 (strain Nancy) / Strain: Nancy
Molecular weightTheoretical: 28.836502 KDa
SequenceString: SPTVEECGYS DRARSITLGN STITTQECAN VVVGYGVWPD YLKDSEATAE DQPTQPDVAT CRFYTLDSVQ WQKTSPGWWW KLPDALSNL GLFGQNMQYH YLGRTGYTVH VQCNASKFHQ GCLLVVCVPE AEMGCATLDN TPSSAELLGG DTAKEFADKP V ASGSNKLV ...String:
SPTVEECGYS DRARSITLGN STITTQECAN VVVGYGVWPD YLKDSEATAE DQPTQPDVAT CRFYTLDSVQ WQKTSPGWWW KLPDALSNL GLFGQNMQYH YLGRTGYTVH VQCNASKFHQ GCLLVVCVPE AEMGCATLDN TPSSAELLGG DTAKEFADKP V ASGSNKLV QRVVYNAGMG VGVGNLTIFP HQWINLRTNN SATIVMPYTN SVPMDNMFRH NNVTLMVIPF VPLDYCPGST TY VPITVTI APMCAEYNGL RLAGHQ

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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 / EC number: picornain 2A
Source (natural)Organism: Coxsackievirus B3 (strain Nancy) / Strain: Nancy
Molecular weightTheoretical: 26.195727 KDa
SequenceString: GLPTMNTPGS CQFLTSDDFQ SPSAMPQYDV TPEMRIPGEV KNLMEIAEVD SVVPVQNVGE KVNSMEAYQI PVRSNEGSGT QVFGFPLQP GYSSVFSRTL LGEILNYYTH WSGSIKLTFM FCGSAMATGK FLLAYSPPGA GAPTKRVDAM LGTHVIWDVG L QSSCVLCI ...String:
GLPTMNTPGS CQFLTSDDFQ SPSAMPQYDV TPEMRIPGEV KNLMEIAEVD SVVPVQNVGE KVNSMEAYQI PVRSNEGSGT QVFGFPLQP GYSSVFSRTL LGEILNYYTH WSGSIKLTFM FCGSAMATGK FLLAYSPPGA GAPTKRVDAM LGTHVIWDVG L QSSCVLCI PWISQTHYRF VASDEYTAGG FITCWYQTNI VVPADAQSSC YIMCFVSACN DFSVRLLKDT PFISQQNFFQ

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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 / EC number: picornain 2A
Source (natural)Organism: Coxsackievirus B3 (strain Nancy) / Strain: Nancy
Molecular weightTheoretical: 7.580377 KDa
SequenceString:
MGAQVSTQKT GAHETRLNAS GNSIIHYTNI NYYKDAASNS ANRQDFTQDP GKFTEPVKDI MIKSLPALN

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Macromolecule #5: 4-[[4-[1,3-bis(oxidanylidene)isoindol-2-yl]phenyl]sulfonylamino]b...

MacromoleculeName: 4-[[4-[1,3-bis(oxidanylidene)isoindol-2-yl]phenyl]sulfonylamino]benzoic acid
type: ligand / ID: 5 / Number of copies: 1 / Formula: FHK
Molecular weightTheoretical: 422.411 Da
Chemical component information

ChemComp-FHK:
4-[[4-[1,3-bis(oxidanylidene)isoindol-2-yl]phenyl]sulfonylamino]benzoic 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: 7.5
Component:
ConcentrationFormulaName
0.1 MMgCl2Magnesium chloride
0.01 MC8H18N2O4SHEPES
VitrificationCryogen name: ETHANE / Instrument: HOMEMADE PLUNGER
DetailsInhibitor was added at 2500:1 molar ratio to purified CVB3 and incubated for 1h at 37C

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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 / Cs: 2.7 mm
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Digitization - Sampling interval: 5.0 µm / Average electron dose: 47.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionSoftware - Name: Gctf (ver. 0.5)
Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

1cov


Details: Fourier filtered to 40A
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 2.0.4)
Final 3D classificationSoftware - Name: RELION (ver. 2.1.beta)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 2.1.beta)
Final reconstructionApplied symmetry - Point group: I (icosahedral) / Resolution.type: BY AUTHOR / Resolution: 4.0 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 2.1.beta) / Number images used: 4891
FSC plot (resolution estimation)

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Atomic model buiding 1

RefinementSpace: REAL / Protocol: FLEXIBLE FIT
Output model

PDB-6gzv:
Identification of a druggable VP1-VP3 interprotomer pocket in the capsid of enteroviruses

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