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- PDB-9eau: RRV DKTA VLP in complex with VLDLR-LBD-Fc -

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Basic information

Entry
Database: PDB / ID: 9eau
TitleRRV DKTA VLP in complex with VLDLR-LBD-Fc
Components
  • Capsid protein
  • Spike glycoprotein E1
  • Spike glycoprotein E2
  • Very low-density lipoprotein receptor
KeywordsVIRAL PROTEIN / Alphavirus Receptor
Function / homology
Function and homology information


reelin receptor activity / VLDL clearance / glycoprotein transport / very-low-density lipoprotein particle receptor activity / ventral spinal cord development / Reelin signalling pathway / very-low-density lipoprotein particle binding / low-density lipoprotein particle receptor activity / very-low-density lipoprotein particle clearance / togavirin ...reelin receptor activity / VLDL clearance / glycoprotein transport / very-low-density lipoprotein particle receptor activity / ventral spinal cord development / Reelin signalling pathway / very-low-density lipoprotein particle binding / low-density lipoprotein particle receptor activity / very-low-density lipoprotein particle clearance / togavirin / reelin-mediated signaling pathway / very-low-density lipoprotein particle / positive regulation of dendrite development / cargo receptor activity / T=4 icosahedral viral capsid / lipid transport / dendrite morphogenesis / regulation of synapse assembly / apolipoprotein binding / cholesterol metabolic process / clathrin-coated pit / receptor-mediated endocytosis / VLDLR internalisation and degradation / memory / calcium-dependent protein binding / nervous system development / symbiont-mediated suppression of host toll-like receptor signaling pathway / host cell cytoplasm / receptor complex / lysosomal membrane / serine-type endopeptidase activity / fusion of virus membrane with host endosome membrane / calcium ion binding / symbiont entry into host cell / virion attachment to host cell / host cell nucleus / host cell plasma membrane / glutamatergic synapse / virion membrane / structural molecule activity / signal transduction / proteolysis / RNA binding / membrane / plasma membrane
Similarity search - Function
: / Low-density lipoprotein receptor repeat class B / LDL-receptor class B (LDLRB) repeat profile. / LDLR class B repeat / Low-density lipoprotein-receptor YWTD domain / Alphavirus E2 glycoprotein, domain B / Peptidase S3, togavirin / Alphavirus E2 glycoprotein / Alphavirus E3 spike glycoprotein / Alphavirus E1 glycoprotein ...: / Low-density lipoprotein receptor repeat class B / LDL-receptor class B (LDLRB) repeat profile. / LDLR class B repeat / Low-density lipoprotein-receptor YWTD domain / Alphavirus E2 glycoprotein, domain B / Peptidase S3, togavirin / Alphavirus E2 glycoprotein / Alphavirus E3 spike glycoprotein / Alphavirus E1 glycoprotein / Alphavirus E2 glycoprotein, domain A / Alphavirus E2 glycoprotein, domain C / Alphavirus E2 glycoprotein / Alphavirus core protein / Alphavirus E3 glycoprotein / Alphavirus E1 glycoprotein / Alphavirus core protein (CP) domain profile. / Low-density lipoprotein receptor domain class A / : / Calcium-binding EGF domain / Low-density lipoprotein (LDL) receptor class A, conserved site / LDL-receptor class A (LDLRA) domain signature. / LDL-receptor class A (LDLRA) domain profile. / Low-density lipoprotein receptor domain class A / Low-density lipoprotein (LDL) receptor class A repeat / LDL receptor-like superfamily / Six-bladed beta-propeller, TolB-like / Coagulation Factor Xa inhibitory site / EGF-type aspartate/asparagine hydroxylation site / EGF-like calcium-binding, conserved site / Calcium-binding EGF-like domain signature. / Aspartic acid and asparagine hydroxylation site. / EGF-like calcium-binding domain / Calcium-binding EGF-like domain / Epidermal growth factor-like domain. / Flavivirus/Alphavirus glycoprotein, immunoglobulin-like domain superfamily / Flavivirus glycoprotein, central and dimerisation domain superfamily / Flaviviral glycoprotein E, dimerisation domain / EGF-like domain profile. / EGF-like domain signature 2. / EGF-like domain / Immunoglobulin E-set / Peptidase S1, PA clan, chymotrypsin-like fold / Peptidase S1, PA clan
Similarity search - Domain/homology
Structural polyprotein / Structural polyprotein / Very low-density lipoprotein receptor / Structural polyprotein
Similarity search - Component
Biological speciesRoss river virus
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.06 Å
AuthorsRaju, S. / Diamond, M.S. / Fremont, D.H. / Center for Structural Biology of Infectious Diseases (CSBID)
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)AI143673 United States
CitationJournal: Cell / Year: 2025
Title: Structural basis for plasticity in receptor engagement by an encephalitic alphavirus.
Authors: Saravanan Raju / Sathvik Palakurty / Alan Sariol / Ngan Wagoner / Lucas J Adams / Sean Hui / William B Klimstra / Daved H Fremont / Michael S Diamond /
Abstract: The structural basis for shifts in receptor usage remains poorly understood despite the implications for virus adaptation and emergence. Western equine encephalitis virus (WEEV) strains exhibit ...The structural basis for shifts in receptor usage remains poorly understood despite the implications for virus adaptation and emergence. Western equine encephalitis virus (WEEV) strains exhibit different patterns of engagement for two of their entry receptors: very-low-density lipoprotein receptor (VLDLR) and protocadherin 10 (PCDH10). Using structural and functional studies, we show that while all WEEV strains have a lipoprotein class A (LA) domain binding site near the E1 fusion loop, VLDLR engagement requires a second binding site in E2 that can vary with single nucleotide substitutions. We also resolve a structure of PCDH10 bound to WEEV, which reveals interactions near the E1 fusion loop with residues that also mediate LA domain binding. Evolutionary analysis enabled the generation of a PCDH10 decoy that protects in vivo against all WEEV strains tested. Our experiments demonstrate how viruses can engage multiple receptors using shared determinants, which likely impacts cellular tropism and virulence.
History
DepositionNov 11, 2024Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 23, 2025Provider: repository / Type: Initial release
Revision 1.0Apr 23, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Apr 23, 2025Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
Revision 1.0Apr 23, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Apr 23, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Apr 23, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Apr 23, 2025Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.1May 14, 2025Group: Data collection / Category: em_admin / em_software / Item: _em_admin.last_update / _em_software.name
Revision 1.1May 14, 2025Data content type: EM metadata / Data content type: EM metadata / EM metadata / Group: Data processing / Experimental summary / Data content type: EM metadata / EM metadata / Category: em_admin / em_software / Data content type: EM metadata / EM metadata / Item: _em_admin.last_update / _em_software.name
Revision 1.2Jun 11, 2025Group: Data collection / Database references / Category: citation / em_admin
Item: _citation.journal_volume / _citation.page_first / _em_admin.last_update
Revision 1.3Sep 10, 2025Group: Data collection / Structure summary / Category: audit_author / em_admin / em_author_list / Item: _em_admin.last_update
Revision 1.2Sep 10, 2025Data content type: EM metadata / Data content type: EM metadata / Group: Experimental summary / Data content type: EM metadata / EM metadata / Category: em_admin / em_author_list / Data content type: EM metadata / Item: _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Spike glycoprotein E1
B: Spike glycoprotein E2
C: Capsid protein
E: Spike glycoprotein E1
F: Spike glycoprotein E2
G: Capsid protein
I: Spike glycoprotein E1
J: Spike glycoprotein E2
K: Capsid protein
M: Spike glycoprotein E1
N: Spike glycoprotein E2
O: Capsid protein
Y: Very low-density lipoprotein receptor
Z: Very low-density lipoprotein receptor
hetero molecules


Theoretical massNumber of molelcules
Total (without water)453,71716
Polymers453,63714
Non-polymers802
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

#1: Protein
Spike glycoprotein E1


Mass: 47432.598 Da / Num. of mol.: 4 / Mutation: K327D, D345K, E348T, D349A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Ross river virus (STRAIN T48) / Variant: E1 mutant DKTA / Production host: Homo sapiens (human) / References: UniProt: C9DZM3
#2: Protein
Spike glycoprotein E2


Mass: 46427.855 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Ross river virus (STRAIN T48) / Production host: Homo sapiens (human) / References: UniProt: Q076B2
#3: Protein
Capsid protein / Coat protein / C


Mass: 17367.848 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Ross river virus (STRAIN T48) / Production host: Homo sapiens (human) / References: UniProt: P08491, togavirin
#4: Protein/peptide Very low-density lipoprotein receptor / VLDL receptor / VLDL-R


Mass: 4361.682 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: VLDLR / Production host: Homo sapiens (human) / References: UniProt: P98155
#5: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Ca / Feature type: SUBJECT OF INVESTIGATION
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: Ross river virus (STRAIN T48) / Type: VIRUS / Entity ID: #1-#4 / Source: MULTIPLE SOURCES
Source (natural)Organism: Ross river virus (STRAIN T48)
Source (recombinant)Organism: Homo sapiens (human)
Details of virusEmpty: YES / Enveloped: YES / Isolate: STRAIN / Type: VIRUS-LIKE PARTICLE
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: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2100 nm / Nominal defocus min: 700 nm
Image recordingElectron dose: 52 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k)

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Processing

EM softwareName: PHENIX / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.06 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 1173256 / Symmetry type: POINT

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