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- PDB-9n3b: CryoEM structure of WNV (Kunjin strain) with the Fab of WNV-86 an... -

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Basic information

Entry
Database: PDB / ID: 9n3b
TitleCryoEM structure of WNV (Kunjin strain) with the Fab of WNV-86 antibody
Components
  • Envelope protein E
  • Small envelope protein M
  • WNV-86 heavy chain
  • WNV-86 light chain
KeywordsVIRUS/IMMUNE SYSTEM / Complex / VIRUS / VIRUS-IMMUNE SYSTEM complex
Function / homology
Function and homology information


symbiont-mediated suppression of host JAK-STAT cascade via inhibition of JAK1 activity / flavivirin / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of host TYK2 activity / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of STAT2 activity / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of STAT1 activity / viral capsid / nucleoside-triphosphate phosphatase / double-stranded RNA binding / clathrin-dependent endocytosis of virus by host cell / mRNA (guanine-N7)-methyltransferase ...symbiont-mediated suppression of host JAK-STAT cascade via inhibition of JAK1 activity / flavivirin / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of host TYK2 activity / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of STAT2 activity / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of STAT1 activity / viral capsid / nucleoside-triphosphate phosphatase / double-stranded RNA binding / clathrin-dependent endocytosis of virus by host cell / mRNA (guanine-N7)-methyltransferase / methyltransferase cap1 / methyltransferase cap1 activity / mRNA 5'-cap (guanine-N7-)-methyltransferase activity / RNA helicase activity / protein dimerization activity / host cell perinuclear region of cytoplasm / host cell endoplasmic reticulum membrane / RNA helicase / symbiont-mediated suppression of host type I interferon-mediated signaling pathway / serine-type endopeptidase activity / symbiont-mediated activation of host autophagy / RNA-directed RNA polymerase / viral RNA genome replication / RNA-directed RNA polymerase activity / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / host cell nucleus / virion membrane / structural molecule activity / ATP hydrolysis activity / proteolysis / extracellular region / ATP binding / metal ion binding
Similarity search - Function
Flavivirus capsid protein C superfamily / Flavivirus non-structural protein NS2B / Genome polyprotein, Flavivirus / : / Flavivirus non-structural protein NS4A / Flavivirus non-structural protein NS2B / Flavivirus non-structural protein NS4B / mRNA cap 0/1 methyltransferase / Flavivirus non-structural protein NS4B / Flavivirus non-structural protein NS4A ...Flavivirus capsid protein C superfamily / Flavivirus non-structural protein NS2B / Genome polyprotein, Flavivirus / : / Flavivirus non-structural protein NS4A / Flavivirus non-structural protein NS2B / Flavivirus non-structural protein NS4B / mRNA cap 0/1 methyltransferase / Flavivirus non-structural protein NS4B / Flavivirus non-structural protein NS4A / Flavivirus NS2B domain profile. / mRNA cap 0 and cap 1 methyltransferase (EC 2.1.1.56 and EC 2.1.1.57) domain profile. / Flavivirus non-structural protein NS2A / Flavivirus non-structural protein NS2A / Flavivirus NS3, petidase S7 / Peptidase S7, Flavivirus NS3 serine protease / Flavivirus NS3 protease (NS3pro) domain profile. / RNA-directed RNA polymerase, thumb domain, Flavivirus / Flavivirus RNA-directed RNA polymerase, thumb domain / RNA-directed RNA polymerase, flavivirus / Flavivirus RNA-directed RNA polymerase, fingers and palm domains / Flavivirus capsid protein C / Flavivirus capsid protein C / Flavivirus non-structural Protein NS1 / Flavivirus non-structural protein NS1 / Envelope glycoprotein M superfamily, flavivirus / Envelope glycoprotein M, flavivirus / Flavivirus polyprotein propeptide superfamily / Flavivirus envelope glycoprotein M / Flavivirus polyprotein propeptide / Flavivirus polyprotein propeptide / : / Flavivirus NS3 helicase, C-terminal helical domain / Flavivirus envelope glycoprotein E, Stem/Anchor domain superfamily / Flavivirus envelope glycoprotein E, stem/anchor domain / Flavivirus envelope glycoprotein E, Stem/Anchor domain / Flaviviral glycoprotein E, central domain, subdomain 1 / Flaviviral glycoprotein E, central domain, subdomain 2 / Flavivirus glycoprotein E, immunoglobulin-like domain / Flavivirus glycoprotein, immunoglobulin-like domain / Flavivirus glycoprotein central and dimerisation domain / Flavivirus glycoprotein, central and dimerisation domains / Ribosomal RNA methyltransferase, FtsJ domain / FtsJ-like methyltransferase / Flavivirus/Alphavirus glycoprotein, immunoglobulin-like domain superfamily / Flavivirus glycoprotein, central and dimerisation domain superfamily / Flaviviral glycoprotein E, dimerisation domain / DEAD box, Flavivirus / Flavivirus DEAD domain / Immunoglobulin E-set / helicase superfamily c-terminal domain / Superfamilies 1 and 2 helicase C-terminal domain profile. / Superfamilies 1 and 2 helicase ATP-binding type-1 domain profile. / DEAD-like helicases superfamily / Helicase, C-terminal / Helicase superfamily 1/2, ATP-binding domain / RNA-directed RNA polymerase, catalytic domain / RdRp of positive ssRNA viruses catalytic domain profile. / S-adenosyl-L-methionine-dependent methyltransferase superfamily / Peptidase S1, PA clan / DNA/RNA polymerase superfamily / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
Biological speciesKunjin virus
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.8 Å
AuthorsKhare, B. / Klose, T.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID) United States
CitationJournal: Embo Rep. / Year: 2026
Title: A distinct E dimer epitope underlies selective recognition by a protective human West Nile virus antibody
Authors: Khare, B. / Arnaud, C.A. / Klose, T. / Rossmann, M.G. / Crowe, J.E. / Kuhn, R.J.
History
DepositionJan 30, 2025Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 8, 2026Provider: repository / Type: Initial release
Revision 1.0Jul 8, 2026Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Jul 8, 2026Data content type: Additional map / Part number: 1 / Data content type: Additional map / Provider: repository / Type: Initial release
Revision 1.0Jul 8, 2026Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Jul 8, 2026Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Jul 8, 2026Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Jul 8, 2026Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Envelope protein E
B: Small envelope protein M
C: Envelope protein E
D: Small envelope protein M
E: Envelope protein E
F: Small envelope protein M
H: WNV-86 heavy chain
L: WNV-86 light chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)211,64411
Polymers210,9808
Non-polymers6643
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Envelope protein E


Mass: 53714.086 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Kunjin virus / Production host: Aedes albopictus C6/36 cell densovirus / References: UniProt: P14335
#2: Protein Small envelope protein M / Matrix protein


Mass: 8221.576 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Kunjin virus / Production host: Aedes albopictus C6/36 cell densovirus / References: UniProt: P14335
#3: Antibody WNV-86 heavy chain


Mass: 13623.166 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
#4: Antibody WNV-86 light chain


Mass: 11549.895 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
#5: Sugar ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0
Has ligand of interestN
Has protein modificationY

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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: West Nile virus (Kunjin) / Type: VIRUS / Entity ID: #1-#4 / Source: NATURAL
Source (natural)Organism: West Nile virus (Kunjin) / Strain: Kunjin virus (STRAIN MRM61C)
Details of virusEmpty: NO / Enveloped: YES / Isolate: STRAIN / Type: VIRION
Natural hostOrganism: Aves
Virus shellName: E and M / Diameter: 460 nm / Triangulation number (T number): 3
Buffer solutionpH: 8 / Details: 10 mM Tris pH 8.0, 120 mM NaCl, 1 mM EDTA
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: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 900 nm
Image recordingElectron dose: 24 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

EM software
IDNameVersionCategory
1cryoSPARCparticle selection
7UCSF Chimeramodel fitting
9PHENIX1.21.1_5286:model refinement
13cryoSPARC4.5.33D reconstruction
CTF correctionType: PHASE FLIPPING ONLY
SymmetryPoint symmetry: I (icosahedral)
3D reconstructionResolution: 3.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 12760 / Symmetry type: POINT
Atomic model buildingSpace: REAL

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