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- EMDB-47775: WEEV CBA87 VLP in complex with human PCDH10-EC1 -

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Basic information

Entry
Database: EMDB / ID: EMD-47775
TitleWEEV CBA87 VLP in complex with human PCDH10-EC1
Map data
Sample
  • Virus: Western equine encephalitis virus
    • Protein or peptide: Structural polyprotein
    • Protein or peptide: Structural polyprotein
    • Protein or peptide: Capsid protein
    • Protein or peptide: Protocadherin-10
KeywordsAlphavirus Receptor / VIRAL PROTEIN
Function / homology
Function and homology information


togavirin / T=4 icosahedral viral capsid / homophilic cell adhesion via plasma membrane adhesion molecules / nervous system development / symbiont-mediated suppression of host toll-like receptor signaling pathway / postsynaptic membrane / host cell cytoplasm / cell adhesion / symbiont-mediated suppression of host gene expression / symbiont entry into host cell ...togavirin / T=4 icosahedral viral capsid / homophilic cell adhesion via plasma membrane adhesion molecules / nervous system development / symbiont-mediated suppression of host toll-like receptor signaling pathway / postsynaptic membrane / host cell cytoplasm / cell adhesion / symbiont-mediated suppression of host gene expression / symbiont entry into host cell / serine-type endopeptidase activity / fusion of virus membrane with host endosome membrane / calcium ion binding / virion attachment to host cell / host cell nucleus / host cell plasma membrane / virion membrane / glutamatergic synapse / structural molecule activity / proteolysis / RNA binding / membrane / plasma membrane
Similarity search - Function
Cadherin, cytoplasmic C-terminal domain / Cadherin cytoplasmic C-terminal / Cadherin, N-terminal / Cadherin-like / : / Alphavirus E2 glycoprotein, domain B / Peptidase S3, togavirin / Alphavirus E2 glycoprotein / Alphavirus E3 spike glycoprotein / Alphavirus E1 glycoprotein ...Cadherin, cytoplasmic C-terminal domain / Cadherin cytoplasmic C-terminal / Cadherin, N-terminal / Cadherin-like / : / 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. / Cadherin conserved site / Cadherin domain signature. / Cadherin repeats. / Cadherin domain / Cadherin-like / Cadherins domain profile. / Cadherin-like superfamily / Flavivirus/Alphavirus glycoprotein, immunoglobulin-like domain superfamily / Flavivirus glycoprotein, central and dimerisation domain superfamily / Flaviviral glycoprotein E, dimerisation domain / Immunoglobulin E-set / Peptidase S1, PA clan, chymotrypsin-like fold / Peptidase S1, PA clan
Similarity search - Domain/homology
Structural polyprotein / Structural polyprotein / Protocadherin-10
Similarity search - Component
Biological speciesWestern equine encephalitis virus / Homo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 4.05 Å
AuthorsRaju S / Diamond MS / Fremont DH
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)U19 AI142790 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 7, 2024-
Header (metadata) releaseApr 23, 2025-
Map releaseApr 23, 2025-
UpdateJun 11, 2025-
Current statusJun 11, 2025Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_47775.png

Downloads & links

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Map

FileDownload / File: emd_47775.map.gz / Format: CCP4 / Size: 103 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.11 Å/pix.
x 300 pix.
= 333. Å		1.11 Å/pix.
x 300 pix.
= 333. Å		1.11 Å/pix.
x 300 pix.
= 333. Å

Surface

Projections

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Images are generated by Spider.

Voxel sizeX=Y=Z: 1.11 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.18
Minimum - Maximum-1.0095208 - 1.509593
Average (Standard dev.)0.00079255935 (±0.07218759)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions300300300
Spacing300300300
CellA=B=C: 333.0 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_47775_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_47775_half_map_2.map
Projections & Slices
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Histogram

Histogram (log scale)

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Sample components

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Entire : Western equine encephalitis virus

EntireName: Western equine encephalitis virus
Components
  • Virus: Western equine encephalitis virus
    • Protein or peptide: Structural polyprotein
    • Protein or peptide: Structural polyprotein
    • Protein or peptide: Capsid protein
    • Protein or peptide: Protocadherin-10

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Supramolecule #1: Western equine encephalitis virus

SupramoleculeName: Western equine encephalitis virus / type: virus / ID: 1 / Parent: 0 / Macromolecule list: all
Details: virus-like particles were produced recombinantly in 293T cells and purified by PEG precipitation followed by density gradient ultracentrifugation.
NCBI-ID: 11039 / Sci species name: Western equine encephalitis virus / Sci species strain: CBA87 / Virus type: VIRUS-LIKE PARTICLE / Virus isolate: STRAIN / Virus enveloped: Yes / Virus empty: Yes
Host (natural)Organism: Passeridae (sparrows)

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Macromolecule #1: Structural polyprotein

MacromoleculeName: Structural polyprotein / type: protein_or_peptide / ID: 1 / Number of copies: 4 / Enantiomer: LEVO
Source (natural)Organism: Western equine encephalitis virus
Molecular weightTheoretical: 47.345758 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: FEHATTVPNV PGIPYKALVE RAGYAPLNLE ITVVSSELTP STNKEYVTCK FHTVVPSPQV KCCGSLECKA SSKADYTCRV FGGVYPFMW GGAQCFCDSE NTQLSEAYVE FAPDCTIDHA VALKVHTAAL KVGLRIVYGN TTARLDTFVN GVTPGSSRDL K VIAGPISA ...String:
FEHATTVPNV PGIPYKALVE RAGYAPLNLE ITVVSSELTP STNKEYVTCK FHTVVPSPQV KCCGSLECKA SSKADYTCRV FGGVYPFMW GGAQCFCDSE NTQLSEAYVE FAPDCTIDHA VALKVHTAAL KVGLRIVYGN TTARLDTFVN GVTPGSSRDL K VIAGPISA AFSPFDHKVV IRKGLVYNYD FPEYGAMNPG AFGDIQASSL DATDIVARTD IRLLKPSVKN IHVPYTQAVS GY EMWKNNS GRPLQETAPF GCKIEVEPLR ATNCAYGHIP ISIDIPDAAF VRSSESPTIL EVSCTVADCI YSADFGGSLT LQY KANREG HCPVHSHSTT AVLKEATTHV TATGSITLHF STSSPQANFI VSLCGKKTTC NAECKPPADH IIGEPHKVDQ EFQA AVSKT SWNWLLALFG GASSLIVVGL IVLVCSSMLI NTRR

UniProtKB: Structural polyprotein

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Macromolecule #2: Structural polyprotein

MacromoleculeName: Structural polyprotein / type: protein_or_peptide / ID: 2 / Number of copies: 4 / Enantiomer: LEVO
Source (natural)Organism: Western equine encephalitis virus / Strain: CBA87
Molecular weightTheoretical: 45.393867 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: PYLGFCPYCR HSAPCFSPIK IENVWDESDD GSIRIQVSAQ FGYNQAGTAD VTKFRYMSYD HDHDIKEDSM EKLAISTSGP CRRLGHKGY FLLAQCPPGD SVTVSITSGA SENSCTVEKK IRRKFVGREE YLFPPVHGKL VKCHVYDHLK ETSAGYITMH R PGPHAYKS ...String:
PYLGFCPYCR HSAPCFSPIK IENVWDESDD GSIRIQVSAQ FGYNQAGTAD VTKFRYMSYD HDHDIKEDSM EKLAISTSGP CRRLGHKGY FLLAQCPPGD SVTVSITSGA SENSCTVEKK IRRKFVGREE YLFPPVHGKL VKCHVYDHLK ETSAGYITMH R PGPHAYKS YLEEASGEVY IKPPSGKNVT YECKCGDYST GIVSTRTKMN GCTKAKQCIA YKRDQTKWVF NSPDLIRHTD HS VQGKLHI PFRLTPTVCP VPLAHTPTVT KWFKGITLHL TATRPTLLTT RKLGLRADAT AEWITGTTSR NFSVGREGLE YVW GNHEPV RVWAQESAPG DPHGWPHEII IHYYHRHPVY TVIVLCGVAL AILVGTASSA ACIAKARRDC LTPYALAPNA TVPT ALAVL CCI

UniProtKB: Structural polyprotein

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Macromolecule #3: Capsid protein

MacromoleculeName: Capsid protein / type: protein_or_peptide / ID: 3 / Number of copies: 4 / Enantiomer: LEVO / EC number: togavirin
Source (natural)Organism: Western equine encephalitis virus
Molecular weightTheoretical: 16.712816 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
ESDKTFPIML NGQVNGYACV VGGRLMKPLH VEGKIDNEQL AAVKLKKASM YDLEYGDVPQ NMKSDTLQYT SDKPPGFYNW HHGAVQYEN GRFTVPRGVG GKGDSGRPIL DNRGRVVAIV LGGANEGTRT ALSVVTWNQK GVTIKDTPEG SEPW

UniProtKB: Structural polyprotein

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Macromolecule #4: Protocadherin-10

MacromoleculeName: Protocadherin-10 / type: protein_or_peptide / ID: 4 / Number of copies: 4 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 11.866213 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
QLHYTVQEEQ EHGTFVGNIA EDLGLDITKL SARGFQTVPN SRTPYLDLNL ETGVLYVNEK IDREQICKQS PSCVLHLEVF LENPLELFQ VEIEVLDIND NPPSF

UniProtKB: Protocadherin-10

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.4
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: FEI FALCON IV (4k x 4k) / Average electron dose: 52.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.1 µm / Nominal defocus min: 0.7000000000000001 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: OTHER
Final reconstructionResolution.type: BY AUTHOR / Resolution: 4.05 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 231651
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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Atomic model buiding 1

Initial modelPDB ID:

8dee


Chain - Source name: PDB / Chain - Initial model type: experimental model
Output model

PDB-9e96:
WEEV CBA87 VLP in complex with human PCDH10-EC1

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