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- PDB-6ad0: The structure of CVA10 mature virion in complex with Fab 2G8 -

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Basic information

Entry
Database: PDB / ID: 6ad0
TitleThe structure of CVA10 mature virion in complex with Fab 2G8
Components
  • VH of Fab 2G8
  • VL of Fab 2G8
  • VP1
  • VP2
  • VP3
  • VP4
KeywordsVIRUS/IMMUNE SYSTEM / CVA10 / immune complex / neutralizing antibody / VIRUS / VIRUS-IMMUNE SYSTEM complex
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 / endocytosis involved in viral entry into host cell / cytoplasmic vesicle membrane / : ...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 / endocytosis involved in viral entry into host cell / cytoplasmic vesicle membrane / : / viral capsid / nucleoside-triphosphate phosphatase / protein complex oligomerization / monoatomic ion channel activity / RNA helicase activity / 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 / structural molecule activity / virion attachment to host cell / ATP hydrolysis activity / proteolysis / RNA binding / ATP binding / metal ion binding
Similarity search - Function
Jelly Rolls - #20 / 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 ...Jelly Rolls - #20 / 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 / 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 / Immunoglobulins / Peptidase S1, PA clan, chymotrypsin-like fold / Peptidase S1, PA clan / DNA/RNA polymerase superfamily / Immunoglobulin-like / Sandwich / P-loop containing nucleoside triphosphate hydrolase / Mainly Beta
Similarity search - Domain/homology
SPHINGOSINE / Genome polyprotein / Genome polyprotein
Similarity search - Component
Biological speciesMus musculus (house mouse)
Coxsackievirus A10
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.9 Å
AuthorsZhu, R. / Zheng, Q.B. / Xu, L.F. / Cui, Y.X. / Li, S.W. / Yan, X.D. / Zhou, Z.H. / Cheng, T.
Funding support China, United States, 9items
OrganizationGrant numberCountry
National Natural Science Foundation of China31670933 China
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R37-GM33050 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM071940 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)1U24GM116792 United States
National Institutes of Health/National Institute of Dental and Craniofacial Research (NIH/NIDCR)DE025567 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)AI094386 United States
National Institutes of Health/National Center for Research Resources (NIH/NCRR)1S10RR23057 United States
National Science Foundation (United States)DBI-1338135 United States
National Science Foundation (United States)DMR-1548924 United States
CitationJournal: Sci Adv / Year: 2018
Title: Discovery and structural characterization of a therapeutic antibody against coxsackievirus A10.
Authors: Rui Zhu / Longfa Xu / Qingbing Zheng / Yanxiang Cui / Shaowei Li / Maozhou He / Zhichao Yin / Dongxiao Liu / Shuxuan Li / Zizhen Li / Zhenqin Chen / Hai Yu / Yuqiong Que / Che Liu / Zhibo ...Authors: Rui Zhu / Longfa Xu / Qingbing Zheng / Yanxiang Cui / Shaowei Li / Maozhou He / Zhichao Yin / Dongxiao Liu / Shuxuan Li / Zizhen Li / Zhenqin Chen / Hai Yu / Yuqiong Que / Che Liu / Zhibo Kong / Jun Zhang / Timothy S Baker / Xiaodong Yan / Z Hong Zhou / Tong Cheng / Ningshao Xia /
Abstract: Coxsackievirus A10 (CVA10) recently emerged as a major pathogen of hand, foot, and mouth disease and herpangina in children worldwide, and lack of a vaccine or a cure against CVA10 infections has ...Coxsackievirus A10 (CVA10) recently emerged as a major pathogen of hand, foot, and mouth disease and herpangina in children worldwide, and lack of a vaccine or a cure against CVA10 infections has made therapeutic antibody identification a public health priority. By targeting a local isolate, CVA10-FJ-01, we obtained a potent antibody, 2G8, against all three capsid forms of CVA10. We show that 2G8 exhibited both 100% preventive and 100% therapeutic efficacy against CVA10 infection in mice. Comparisons of the near-atomic cryo-electron microscopy structures of the three forms of CVA10 capsid and their complexes with 2G8 Fab reveal that a single Fab binds a border region across the three capsid proteins (VP1 to VP3) and explain 2G8's remarkable cross-reactivities against all three capsid forms. The atomic structures of this first neutralizing antibody of CVA10 should inform strategies for designing vaccines and therapeutics against CVA10 infections.
History
DepositionJul 28, 2018Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Nov 21, 2018Provider: repository / Type: Initial release
Revision 1.1Mar 23, 2022Group: Author supporting evidence / Database references / Derived calculations
Category: database_2 / pdbx_audit_support / pdbx_struct_oper_list
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_audit_support.funding_organization / _pdbx_struct_oper_list.name / _pdbx_struct_oper_list.symmetry_operation / _pdbx_struct_oper_list.type

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Structure visualization

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  • Biological unit as complete icosahedral assembly
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  • Biological unit as icosahedral pentamer
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  • Biological unit as icosahedral 23 hexamer
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  • Deposited structure unit
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  • Simplified surface model + fitted atomic model
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  • Superimposition on EM map
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Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
L: VL of Fab 2G8
H: VH of Fab 2G8
A: VP1
B: VP2
C: VP3
D: VP4
hetero molecules


Theoretical massNumber of molelcules
Total (without water)120,4027
Polymers120,1026
Non-polymers2991
Water0
1
L: VL of Fab 2G8
H: VH of Fab 2G8
A: VP1
B: VP2
C: VP3
D: VP4
hetero molecules
x 60


Theoretical massNumber of molelcules
Total (without water)7,224,116420
Polymers7,206,147360
Non-polymers17,97060
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
point symmetry operation59
Buried area25040 Å2
ΔGint-123 kcal/mol
Surface area45270 Å2
2


  • Idetical with deposited unit
  • icosahedral asymmetric unit
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
3
L: VL of Fab 2G8
H: VH of Fab 2G8
A: VP1
B: VP2
C: VP3
D: VP4
hetero molecules
x 5


  • icosahedral pentamer
  • 602 kDa, 30 polymers
Theoretical massNumber of molelcules
Total (without water)602,01035
Polymers600,51230
Non-polymers1,4975
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
point symmetry operation4
4
L: VL of Fab 2G8
H: VH of Fab 2G8
A: VP1
B: VP2
C: VP3
D: VP4
hetero molecules
x 6


  • icosahedral 23 hexamer
  • 722 kDa, 36 polymers
Theoretical massNumber of molelcules
Total (without water)722,41242
Polymers720,61536
Non-polymers1,7976
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

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Protein , 4 types, 4 molecules ABCD

#3: Protein VP1


Mass: 33159.230 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Coxsackievirus A10 / References: UniProt: A0A1V0FT21
#4: Protein VP2


Mass: 27808.133 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Coxsackievirus A10 / References: UniProt: A0A1V0FT21
#5: Protein VP3


Mass: 26129.588 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Coxsackievirus A10 / References: UniProt: A0A1V0FT21
#6: Protein VP4


Mass: 7464.104 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Coxsackievirus A10 / References: UniProt: Q75Q92, UniProt: A0A1V0FT21*PLUS

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Antibody , 2 types, 2 molecules LH

#1: Antibody VL of Fab 2G8


Mass: 12391.881 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mus musculus (house mouse)
#2: Antibody VH of Fab 2G8


Mass: 13149.508 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Mus musculus (house mouse)

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Non-polymers , 1 types, 1 molecules

#7: Chemical ChemComp-SPH / SPHINGOSINE / Sphingosine


Mass: 299.492 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C18H37NO2

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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: CVA10 mature virion in complex with Fab 2G8 / Type: VIRUS / Entity ID: #1-#6
Source (natural)Organism: Coxsackievirus A10
Details of virusEmpty: NO / Enveloped: NO / Isolate: STRAIN / Type: VIRION
Buffer solutionpH: 7.4
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: Tecnai F30 / Image courtesy: FEI Company
MicroscopyModel: FEI TECNAI F30
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy
Image recordingElectron dose: 25 e/Å2 / Film or detector model: FEI FALCON II (4k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING ONLY
SymmetryPoint symmetry: I (icosahedral)
3D reconstructionResolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 36555 / Symmetry type: POINT

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