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- PDB-7uop: Prefusion-stabilized Nipah virus fusion protein complexed with Fab 4H3 -

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Basic information

Entry
Database: PDB / ID: 7uop
TitlePrefusion-stabilized Nipah virus fusion protein complexed with Fab 4H3
Components
  • Fab 4H3 heavy chain
  • Fab 4H3 light chain
  • Fusion glycoprotein F0
KeywordsVIRAL PROTEIN/Immune System / Henipavirus / Nipah virus / NiV / F / fusion / prefusion / preF / pre-F / neutralizing antibody / Fab / VIRAL PROTEIN / VIRAL PROTEIN-Immune System complex
Function / homology
Function and homology information


membrane fusion involved in viral entry into host cell / fusion of virus membrane with host plasma membrane / viral envelope / symbiont entry into host cell / host cell plasma membrane / virion membrane / membrane
Similarity search - Function
Precursor fusion glycoprotein F0, Paramyxoviridae / Fusion glycoprotein F0
Similarity search - Domain/homology
Fusion glycoprotein F0
Similarity search - Component
Biological speciesNipah henipavirus
Mus musculus (house mouse)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.8 Å
AuthorsByrne, P.O. / McLellan, J.S.
Funding support United States, 1items
OrganizationGrant numberCountry
Welch FoundationF-0003-19620604 United States
CitationJournal: Nat Commun / Year: 2023
Title: Structural basis for antibody recognition of vulnerable epitopes on Nipah virus F protein.
Authors: Patrick O Byrne / Brian E Fisher / David R Ambrozak / Elizabeth G Blade / Yaroslav Tsybovsky / Barney S Graham / Jason S McLellan / Rebecca J Loomis /
Abstract: Nipah virus (NiV) is a pathogenic paramyxovirus that causes fatal encephalitis in humans. Two envelope glycoproteins, the attachment protein (G/RBP) and fusion protein (F), facilitate entry into host ...Nipah virus (NiV) is a pathogenic paramyxovirus that causes fatal encephalitis in humans. Two envelope glycoproteins, the attachment protein (G/RBP) and fusion protein (F), facilitate entry into host cells. Due to its vital role, NiV F presents an attractive target for developing vaccines and therapeutics. Several neutralization-sensitive epitopes on the NiV F apex have been described, however the antigenicity of most of the F protein's surface remains uncharacterized. Here, we immunize mice with prefusion-stabilized NiV F and isolate ten monoclonal antibodies that neutralize pseudotyped virus. Cryo-electron microscopy reveals eight neutralization-sensitive epitopes on NiV F, four of which have not previously been described. Novel sites span the lateral and basal faces of NiV F, expanding the known library of vulnerable epitopes. Seven of ten antibodies bind the Hendra virus (HeV) F protein. Multiple sequence alignment suggests that some of these newly identified neutralizing antibodies may also bind F proteins across the Henipavirus genus. This work identifies new epitopes as targets for therapeutics, provides a molecular basis for NiV neutralization, and lays a foundation for development of new cross-reactive antibodies targeting Henipavirus F proteins.
History
DepositionApr 13, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 29, 2023Provider: repository / Type: Initial release
Revision 1.1Jan 31, 2024Group: Data collection / Database references
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year
Revision 1.2Oct 16, 2024Group: Data collection / Structure summary
Category: em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _em_admin.last_update / _pdbx_entry_details.has_protein_modification

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Fusion glycoprotein F0
D: Fusion glycoprotein F0
G: Fusion glycoprotein F0
H: Fab 4H3 heavy chain
L: Fab 4H3 light chain
B: Fab 4H3 heavy chain
E: Fab 4H3 light chain
C: Fab 4H3 heavy chain
F: Fab 4H3 light chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)248,39221
Polymers245,7389
Non-polymers2,65412
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Fusion glycoprotein F0 / Protein F


Mass: 52295.176 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Nipah henipavirus / Production host: Homo sapiens (human) / References: UniProt: Q9IH63
#2: Antibody Fab 4H3 heavy chain


Mass: 15852.915 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Production host: Homo sapiens (human)
#3: Antibody Fab 4H3 light chain


Mass: 13764.521 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Production host: Homo sapiens (human)
#4: 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.: 12
Source method: isolated from a genetically manipulated source
Formula: C8H15NO6 / Feature type: SUBJECT OF INVESTIGATION
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 interestY
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: Prefusion-stabilized Nipah virus fusion protein complexed with Fab 4H3
Type: COMPLEX / Entity ID: #2-#3 / Source: RECOMBINANT
Source (natural)Organism: Nipah henipavirus
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 8
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: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 1500 nm
Image recordingElectron dose: 80 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM softwareName: SerialEM / Category: image acquisition
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C3 (3 fold cyclic)
3D reconstructionResolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 291096 / Symmetry type: POINT

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