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- PDB-7bqx: Epstein-Barr virus, C5 portal vertex -

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Basic information

Entry
Database: PDB / ID: 7bqx
TitleEpstein-Barr virus, C5 portal vertex
Components
  • (Capsid vertex component ...) x 2
  • (Triplex capsid protein ...) x 2
  • Large tegument protein deneddylase
  • Major capsid protein
  • Small capsomere-interacting protein
KeywordsVIRAL PROTEIN / portal vertex / CATC / tegumented capsid
Function / homology
Function and homology information


T=16 icosahedral viral capsid / viral genome packaging / viral tegument / viral capsid assembly / chromosome organization / viral process / viral penetration into host nucleus / host cell / viral capsid / symbiont-mediated perturbation of host ubiquitin-like protein modification ...T=16 icosahedral viral capsid / viral genome packaging / viral tegument / viral capsid assembly / chromosome organization / viral process / viral penetration into host nucleus / host cell / viral capsid / symbiont-mediated perturbation of host ubiquitin-like protein modification / ubiquitinyl hydrolase 1 / host cell cytoplasm / cysteine-type deubiquitinase activity / Hydrolases; Acting on peptide bonds (peptidases); Cysteine endopeptidases / symbiont entry into host cell / host cell nucleus / structural molecule activity / proteolysis / DNA binding
Similarity search - Function
Gammaherpesvirus capsid / Gammaherpesvirus capsid protein / Large tegument protein deneddylase / Herpesvirus tegument ubiquitin-specific protease (htUSP) domain profile. / Herpesvirus large tegument protein, USP domain / Herpesvirus tegument protein, N-terminal conserved region / Herpesvirus capsid vertex component 1 / Herpesvirus UL17 protein / : / Herpesvirus UL25 ...Gammaherpesvirus capsid / Gammaherpesvirus capsid protein / Large tegument protein deneddylase / Herpesvirus tegument ubiquitin-specific protease (htUSP) domain profile. / Herpesvirus large tegument protein, USP domain / Herpesvirus tegument protein, N-terminal conserved region / Herpesvirus capsid vertex component 1 / Herpesvirus UL17 protein / : / Herpesvirus UL25 / Herpesvirus UL25 family / Herpesvirus capsid shell protein 1 / Herpesvirus capsid shell protein VP19C / Herpesvirus capsid protein 2 / Herpesvirus VP23 like capsid protein / Herpesvirus major capsid protein / Herpesvirus major capsid protein, upper domain superfamily / Herpes virus major capsid protein / Papain-like cysteine peptidase superfamily
Similarity search - Domain/homology
Large tegument protein deneddylase / Triplex capsid protein 1 / Capsid vertex component 1 / Major capsid protein / Capsid vertex component 2 / Small capsomere-interacting protein / Triplex capsid protein 2
Similarity search - Component
Biological speciesEpstein-Barr virus (Epstein-Barr virus)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.2 Å
AuthorsLi, Z. / Yu, X.
Funding support China, 5items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)31900869 China
National Natural Science Foundation of China (NSFC)81830090 China
National Natural Science Foundation of China (NSFC)81702001 China
Ministry of Science and Technology (MoST, China)2017YFA0505600 China
Ministry of Science and Technology (MoST, China)2016YFA0502101 China
CitationJournal: Cell Res / Year: 2020
Title: CryoEM structure of the tegumented capsid of Epstein-Barr virus.
Authors: Zhihai Li / Xiao Zhang / Lili Dong / Jingjing Pang / Miao Xu / Qian Zhong / Mu-Sheng Zeng / Xuekui Yu /
Abstract: Epstein-Barr virus (EBV) is the primary cause of infectious mononucleosis and has been shown to be closely associated with various malignancies. Here, we present a complete atomic model of EBV, ...Epstein-Barr virus (EBV) is the primary cause of infectious mononucleosis and has been shown to be closely associated with various malignancies. Here, we present a complete atomic model of EBV, including the icosahedral capsid, the dodecameric portal and the capsid-associated tegument complex (CATC). Our in situ portal from the tegumented capsid adopts a closed conformation with its channel valve holding the terminal viral DNA and with its crown region firmly engaged by three layers of ring-like dsDNA, which, together with the penton flexibility, effectively alleviates the capsid inner pressure placed on the portal cap. In contrast, the CATCs, through binding to the flexible penton vertices in a stoichiometric manner, accurately increase the inner capsid pressure to facilitate the pressure-driven genome delivery. Together, our results provide important insights into the mechanism by which the EBV capsid, portal, packaged genome and the CATCs coordinately achieve a pressure balance to simultaneously benefit both viral genome retention and ejection.
History
DepositionMar 25, 2020Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Sep 30, 2020Provider: repository / Type: Initial release
Revision 1.1Oct 14, 2020Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last
Revision 1.2Mar 27, 2024Group: Data collection / Database references / Derived calculations
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_struct_oper_list
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_struct_oper_list.name / _pdbx_struct_oper_list.symmetry_operation / _pdbx_struct_oper_list.type

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Assembly

Deposited unit
5: Triplex capsid protein 1
6: Triplex capsid protein 2
7: Triplex capsid protein 2
K: Capsid vertex component 2
G: Capsid vertex component 2
C: Capsid vertex component 1
B: Large tegument protein deneddylase
O: Large tegument protein deneddylase
Y: Small capsomere-interacting protein
Z: Small capsomere-interacting protein
2: Small capsomere-interacting protein
S: Major capsid protein
T: Major capsid protein
W: Major capsid protein
x: Major capsid protein
y: Small capsomere-interacting protein
e: Triplex capsid protein 1
f: Triplex capsid protein 2
g: Triplex capsid protein 2


Theoretical massNumber of molelcules
Total (without water)1,758,35119
Polymers1,758,35119
Non-polymers00
Water00
1
5: Triplex capsid protein 1
6: Triplex capsid protein 2
7: Triplex capsid protein 2
K: Capsid vertex component 2
G: Capsid vertex component 2
C: Capsid vertex component 1
B: Large tegument protein deneddylase
O: Large tegument protein deneddylase
Y: Small capsomere-interacting protein
Z: Small capsomere-interacting protein
2: Small capsomere-interacting protein
S: Major capsid protein
T: Major capsid protein
W: Major capsid protein
x: Major capsid protein
y: Small capsomere-interacting protein
e: Triplex capsid protein 1
f: Triplex capsid protein 2
g: Triplex capsid protein 2
x 5


Theoretical massNumber of molelcules
Total (without water)8,791,75695
Polymers8,791,75695
Non-polymers00
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
point symmetry operation4
Buried area109800 Å2
ΔGint-641 kcal/mol
Surface area278660 Å2
2


  • Idetical with deposited unit
  • point asymmetric unit
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
3


  • Idetical with deposited unit in distinct coordinate
  • point asymmetric unit, std point frame
TypeNameSymmetry operationNumber
transform to point frame1
SymmetryPoint symmetry: (Schoenflies symbol: C5 (5 fold cyclic))

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Components

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Triplex capsid protein ... , 2 types, 6 molecules 5e67fg

#1: Protein Triplex capsid protein 1


Mass: 39231.539 Da / Num. of mol.: 2 / Source method: isolated from a natural source
Source: (natural) Epstein-Barr virus (strain B95-8) (Epstein-Barr virus (strain B95-8))
Strain: B95-8 / References: UniProt: P03187
#2: Protein
Triplex capsid protein 2


Mass: 33654.039 Da / Num. of mol.: 4 / Source method: isolated from a natural source
Source: (natural) Epstein-Barr virus (strain B95-8) (Epstein-Barr virus (strain B95-8))
Strain: B95-8 / References: UniProt: P25214

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Capsid vertex component ... , 2 types, 3 molecules KGC

#3: Protein Capsid vertex component 2


Mass: 62525.469 Da / Num. of mol.: 2 / Source method: isolated from a natural source
Source: (natural) Epstein-Barr virus (strain B95-8) (Epstein-Barr virus (strain B95-8))
Strain: B95-8 / References: UniProt: P03233
#4: Protein Capsid vertex component 1


Mass: 54527.941 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Epstein-Barr virus (strain B95-8) (Epstein-Barr virus (strain B95-8))
Strain: B95-8 / References: UniProt: P03222

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Protein , 3 types, 10 molecules BOYZ2ySTWx

#5: Protein Large tegument protein deneddylase


Mass: 338310.625 Da / Num. of mol.: 2 / Source method: isolated from a natural source
Source: (natural) Epstein-Barr virus (strain B95-8) (Epstein-Barr virus (strain B95-8))
Strain: B95-8
References: UniProt: P03186, ubiquitinyl hydrolase 1, Hydrolases; Acting on peptide bonds (peptidases); Cysteine endopeptidases
#6: Protein
Small capsomere-interacting protein


Mass: 18169.100 Da / Num. of mol.: 4 / Source method: isolated from a natural source
Source: (natural) Epstein-Barr virus (strain B95-8) (Epstein-Barr virus (strain B95-8))
Strain: B95-8 / References: UniProt: P14348
#7: Protein
Major capsid protein / MCP


Mass: 154098.875 Da / Num. of mol.: 4 / Source method: isolated from a natural source
Source: (natural) Epstein-Barr virus (strain B95-8) (Epstein-Barr virus (strain B95-8))
Strain: B95-8 / References: UniProt: P03226

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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 gammaherpesvirus 4 / Type: VIRUS / Source: NATURAL
Source (natural)Organism: Human gammaherpesvirus 4 (Epstein-Barr virus)
Details of virusEmpty: NO / Enveloped: YES / Isolate: STRAIN / Type: VIRION
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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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: OTHER
Electron lensMode: OTHER
Image recordingElectron dose: 48 e/Å2 / Film or detector model: GATAN K2 QUANTUM (4k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.14_3260: / Classification: refinement
EM software
IDNameVersionCategory
2RELION3image acquisition
4RELION3CTF correction
10RELION3initial Euler assignment
11RELION3final Euler assignment
12RELION3classification
13RELION33D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C5 (5 fold cyclic)
3D reconstructionResolution: 4.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 28639 / Symmetry type: POINT

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