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- PDB-7vxl: Coxsackievirus B3 A-particle at pH7.4 (VP3-234Q) -

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Basic information

Entry
Database: PDB / ID: 7vxl
TitleCoxsackievirus B3 A-particle at pH7.4 (VP3-234Q)
Components
  • Capsid protein VP1
  • Capsid protein VP2
  • Capsid protein VP3
KeywordsVIRUS / CVB3 / VP3-234Q / A-particle
Function / homology
Function and homology information


symbiont-mediated perturbation of host transcription / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of RIG-I activity / 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 MAVS 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 ...symbiont-mediated perturbation of host transcription / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of RIG-I activity / 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 MAVS 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 / nucleoside-triphosphate phosphatase / channel activity / monoatomic ion transmembrane transport / symbiont-mediated suppression of host NF-kappaB cascade / DNA replication / RNA helicase activity / endocytosis involved in viral entry into host cell / 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 VP4 superfamily / Jelly Rolls - #20 / 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 superfamily / Jelly Rolls - #20 / 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 / Jelly Rolls / 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 / Sandwich / P-loop containing nucleoside triphosphate hydrolase / Mainly Beta
Similarity search - Domain/homology
Biological speciesCoxsackievirus B3
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.3 Å
AuthorsWang, Q.L. / Liu, C.C.
Funding support China, 1items
OrganizationGrant numberCountry
National Science Foundation (NSF, China)82072289 China
CitationJournal: To Be Published
Title: Coxsackievirus B3 A-particle at pH7.4 (VP3-234Q)
Authors: Wang, Q.L. / Liu, C.C.
History
DepositionNov 12, 2021Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Nov 16, 2022Provider: repository / Type: Initial release
Revision 1.1Jun 26, 2024Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / em_3d_fitting_list / em_admin / pdbx_initial_refinement_model
Item: _em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id ..._em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id / _em_3d_fitting_list.source_name / _em_3d_fitting_list.type / _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Capsid protein VP1
B: Capsid protein VP2
C: Capsid protein VP3


Theoretical massNumber of molelcules
Total (without water)86,6903
Polymers86,6903
Non-polymers00
Water00
1
A: Capsid protein VP1
B: Capsid protein VP2
C: Capsid protein VP3
x 60


Theoretical massNumber of molelcules
Total (without water)5,201,374180
Polymers5,201,374180
Non-polymers00
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
point symmetry operation59
2


  • Idetical with deposited unit
  • icosahedral asymmetric unit
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
3
A: Capsid protein VP1
B: Capsid protein VP2
C: Capsid protein VP3
x 5


  • icosahedral pentamer
  • 433 kDa, 15 polymers
Theoretical massNumber of molelcules
Total (without water)433,44815
Polymers433,44815
Non-polymers00
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
point symmetry operation4
4
A: Capsid protein VP1
B: Capsid protein VP2
C: Capsid protein VP3
x 6


  • icosahedral 23 hexamer
  • 520 kDa, 18 polymers
Theoretical massNumber of molelcules
Total (without water)520,13718
Polymers520,13718
Non-polymers00
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
point symmetry operation5
5


  • Idetical with deposited unit in distinct coordinate
  • icosahedral asymmetric unit, std point frame
TypeNameSymmetry operationNumber
transform to point frame1
SymmetryPoint symmetry: (Schoenflies symbol: I (icosahedral))

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Components

#1: Protein Capsid protein VP1 / P1D / Virion protein 1


Mass: 31639.371 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Coxsackievirus B3 / Production host: Homo sapiens (human) / References: UniProt: P03313
#2: Protein Capsid protein VP2 / P1B / Virion protein 2


Mass: 28822.475 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Coxsackievirus B3 / Production host: Homo sapiens (human) / References: UniProt: P03313
#3: Protein Capsid protein VP3 / P1C / Virion protein 3


Mass: 26227.725 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Coxsackievirus B3 / Production host: Homo sapiens (human) / References: UniProt: P03313

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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: Coxsackievirus B3 / Type: VIRUS / Entity ID: all / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Coxsackievirus B3
Source (recombinant)Organism: Homo sapiens (human)
Details of virusEmpty: NO / Enveloped: NO / Isolate: STRAIN / Type: VIRION
Natural hostOrganism: Homo sapiens
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid type: PELCO Ultrathin Carbon with Lacey Carbon
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 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 FIELD / Nominal magnification: 75000 X / Nominal defocus max: 2500 nm / Nominal defocus min: 1500 nm / Calibrated defocus min: 1800 nm / Calibrated defocus max: 5000 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 / Temperature (max): 70 K / Temperature (min): 70 K
Image recordingAverage exposure time: 1 sec. / Electron dose: 40 e/Å2 / Detector mode: COUNTING / Film or detector model: FEI FALCON III (4k x 4k)
Image scansWidth: 4096 / Height: 4096

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Processing

EM software
IDNameVersionCategoryDetails
1EMAN1particle selectionethan.py was used to automatically pick particles
2EPUimage acquisitionEPU was used to collect the raw data
4CTFFIND4CTF correctionCTFFIND4 was used to estimate the CTF values
7UCSF Chimera1.14model fitting
9PHENIX1.18model refinement
10RELION3.0.8initial Euler assignmentRELION 3.0.8 was used to determine the initial angular assignment
11RELION3.0.8final Euler assignmentRELION 3.0.8 was used to determine the final angular assignment
12RELION3.0.8classificationRELION 3.0.8 was used to do Class3D
13RELION3.0.83D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 158446
3D reconstructionResolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 31260 / Num. of class averages: 1 / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: REAL
Atomic model building

3D fitting-ID: 1 / Accession code: 1COV / Initial refinement model-ID: 1 / PDB-ID: 1COV

1cov

/ Source name: PDB / Type: experimental model

IDPdb chain-ID
1A
2B
3C
4D

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