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- EMDB-62749: Structure of Western equine encephalitis virus 71V1658 strain VLP... -

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Basic information

Entry
Database: EMDB / ID: EMD-62749
TitleStructure of Western equine encephalitis virus 71V1658 strain VLP in complex with human PCDH10 EC1
Map data
Sample
  • Complex: Western equine encephalitis virus strain 71V1658 VLP in complex with its receptor PCDH10 EC1 at the asymmetric unit
    • Protein or peptide: E1 glycoprotein
    • Protein or peptide: E2 glycoprotein
    • Protein or peptide: Capsid glycoprotein
    • Protein or peptide: Protocadherin-10
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
KeywordsWestern Equine Encephalitis virus / WEEV / PCDH10 / EC1 / receptor / complex / glycoprotein / VIRAL PROTEIN
Function / homology
Function and homology information


T=4 icosahedral viral capsid / homophilic cell-cell adhesion / nervous system development / postsynaptic membrane / host cell cytoplasm / cell adhesion / serine-type endopeptidase activity / fusion of virus membrane with host endosome membrane / calcium ion binding / symbiont entry into host cell ...T=4 icosahedral viral capsid / homophilic cell-cell adhesion / nervous system development / postsynaptic membrane / host cell cytoplasm / cell adhesion / 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 / proteolysis / 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 / Protocadherin-10
Similarity search - Component
Biological speciesWestern equine encephalitis virus / Homo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.3 Å
AuthorsCao D / Ma B / Cao Z / Zhang X / Xiang Y
Funding support China, 3 items
OrganizationGrant numberCountry
Ministry of Science and Technology (MoST, China) China
National Natural Science Foundation of China (NSFC) China
Chinese Academy of Sciences China
CitationJournal: Cell Rep / Year: 2025
Title: Structural basis for the recognition of two different types of receptors by Western equine encephalitis virus.
Authors: Bingting Ma / Ziyi Cao / Weijia Ding / Xinzheng Zhang / Ye Xiang / Duanfang Cao /
Abstract: Western equine encephalitis virus (WEEV) enters cells via various receptors. Here, we report the cryoelectron microscopy (cryo-EM) structures of WEEV in complex with its receptors PCDH10 and very-low- ...Western equine encephalitis virus (WEEV) enters cells via various receptors. Here, we report the cryoelectron microscopy (cryo-EM) structures of WEEV in complex with its receptors PCDH10 and very-low-density lipoprotein receptor (VLDLR). Structural analysis shows that PCDH10 binds in the cleft formed by adjacent E2-E1 heterodimers of WEEV through its EC1 ectodomain. Residues of viral envelope proteins involved in the interactions with PCDH10 EC1 are unique to WEEV. The strain-specific receptor VLDLR binds WEEV strain McMillan through two consecutive ecto-LDLR class A (LA) repeats. LA1-2, LA2-3, LA3-4, LA4-5, and LA5-6 of VLDLR all have detectable interactions with WEEV. Detailed structures of WEEV in complex with LA1-2 and LA2-3 show that the N-terminal LA repeat binds in the cleft and that the C-terminal LA repeat is attached to the E2 B domain. The acquisition of a single E2 mutation (V265F) allows WEEV strain 71V-1658, originally unable to bind VLDLR, to gain this receptor-binding ability. The binding of VLDLR to WEEV is in a mode different from those of other alphaviruses.
History
DepositionDec 15, 2024-
Header (metadata) releaseJun 4, 2025-
Map releaseJun 4, 2025-
UpdateJul 16, 2025-
Current statusJul 16, 2025Processing site: PDBc / Status: Released

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Structure visualization

Supplemental images

emd_62749.png

Downloads & links

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Map

FileDownload / File: emd_62749.map.gz / Format: CCP4 / Size: 30.5 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
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AxesZ (Sec.)Y (Row.)X (Col.)
1.34 Å/pix.
x 200 pix.
= 268. Å		1.34 Å/pix.
x 200 pix.
= 268. Å		1.34 Å/pix.
x 200 pix.
= 268. Å

Surface

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Images are generated by Spider.

Voxel sizeX=Y=Z: 1.34 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.015
Minimum - Maximum-0.21461155 - 0.30328432
Average (Standard dev.)0.0003529073 (±0.00827676)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions200200200
Spacing200200200
CellA=B=C: 268.0 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_62749_msk_1.map
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Half map: #1

Fileemd_62749_half_map_1.map
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Half map: #2

Fileemd_62749_half_map_2.map
Projections & Slices
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Sample components

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Entire : Western equine encephalitis virus strain 71V1658 VLP in complex w...

EntireName: Western equine encephalitis virus strain 71V1658 VLP in complex with its receptor PCDH10 EC1 at the asymmetric unit
Components
  • Complex: Western equine encephalitis virus strain 71V1658 VLP in complex with its receptor PCDH10 EC1 at the asymmetric unit
    • Protein or peptide: E1 glycoprotein
    • Protein or peptide: E2 glycoprotein
    • Protein or peptide: Capsid glycoprotein
    • Protein or peptide: Protocadherin-10
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

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Supramolecule #1: Western equine encephalitis virus strain 71V1658 VLP in complex w...

SupramoleculeName: Western equine encephalitis virus strain 71V1658 VLP in complex with its receptor PCDH10 EC1 at the asymmetric unit
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#4
Source (natural)Organism: Western equine encephalitis virus / Strain: strian 71V1658

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Macromolecule #1: E1 glycoprotein

MacromoleculeName: E1 glycoprotein / type: protein_or_peptide / ID: 1 / Number of copies: 4 / Enantiomer: LEVO
Source (natural)Organism: Western equine encephalitis virus / Strain: 71V1658
Molecular weightTheoretical: 47.326781 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: FEHATTVPNV PGIPYKALVE RAGYAPLNLE ITVVSSELTP STNKEYVTCK FHTVIPSPQV KCCGSLECKA SSKADYTCRV FGGVYPFMW GGAQCFCDSE NTQLSEAYVE FAPDCTIDHA VALKVHTAAL KVGLRIVYGN TTAHLDTFVN GVTPGSSRDL K VIAGPISA ...String:
FEHATTVPNV PGIPYKALVE RAGYAPLNLE ITVVSSELTP STNKEYVTCK FHTVIPSPQV KCCGSLECKA SSKADYTCRV FGGVYPFMW GGAQCFCDSE NTQLSEAYVE FAPDCTIDHA VALKVHTAAL KVGLRIVYGN TTAHLDTFVN GVTPGSSRDL K VIAGPISA AFSPFDHKVV IRKGLVYNYD FPEYGAMKPG AFGDIQASSL DATDIVARTD IRLLKPSVKN IHVPYTQAVS GY EMWKNNS GRPLQETAPF GCKIEVEPLR ASNCAYGHIP ISIDIPDAAF VRSSESPTIL EVSCTVADCI YSADFGGSLT LQY KADREG HCPVHSHSTT AVLKEATTHV TAVGSITLHF STSSPQANFI VSLCGKKSTC NAECKPPADH IIGEPHKVDQ EFQA AVSKT SWNWLLALFG GASSLIVVGL IVLVCSSMLI NTRR

UniProtKB: Structural polyprotein

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Macromolecule #2: E2 glycoprotein

MacromoleculeName: E2 glycoprotein / type: protein_or_peptide / ID: 2 / Number of copies: 4 / Enantiomer: LEVO
Source (natural)Organism: Western equine encephalitis virus / Strain: 71V1658
Molecular weightTheoretical: 46.218676 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: SITDDFTLTS PYLGFCPYCR HSTPCFSPIK IENVWDESDD GSIRIQVSAQ FGYNQAGTAD VTKFRYMSFD HDHDIKEDSM EKIAISTSG PCRRLGHKGY FLLAQCPPGD SVTVSITSGA SENSCTVEKK IRRKFVGREE YLFPPVHGKL VKCHVYDHLK E TSAGYITM ...String:
SITDDFTLTS PYLGFCPYCR HSTPCFSPIK IENVWDESDD GSIRIQVSAQ FGYNQAGTAD VTKFRYMSFD HDHDIKEDSM EKIAISTSG PCRRLGHKGY FLLAQCPPGD SVTVSITSGA SENSCTVEKK IRRKFVGREE YLFPPVHGKL VKCHVYDHLK E TSAGYITM HRPGPHAYKS YLEEASGEVY IKPPSGKNVT YECKCGDYST GIVSTRTKMN GCTKAKQCIA YKSDQTKWVF NS PDLIRHT DHSVQGKLHI PFRLTPTVCP VPLAHTPTVT KWFKGITLHL TAMRPTLLTT RKLGLRADAT AEWITGSTSR NFS VGREGL EYVWGNHEPV RVWAQESAPG DPHGWPHEII IHYYHRHPVY TVIVLCGVAL AILVGTASSA ACIAKARRDC LTPY ALAPN ATVPTALAVL C

UniProtKB: Structural polyprotein

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Macromolecule #3: Capsid glycoprotein

MacromoleculeName: Capsid glycoprotein / type: protein_or_peptide / ID: 3 / Number of copies: 4 / Enantiomer: LEVO
Source (natural)Organism: Western equine encephalitis virus / Strain: 71V1658
Molecular weightTheoretical: 16.409549 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
KTFPIMLNGQ VNGYACVVGG RLMKPLHVEG KIDNEQLAAV KLKKASMYDL EYGDVPQNMK SDTLQYTSDK PPGFYNWHHG AVQYENGRF TVPRGVGGKG DSGRPILDNR GRVVAIVLGG ANEGTRTALS VVTWNQKGVT IRDTPEGSEP W

UniProtKB: Structural polyprotein

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Macromolecule #4: Protocadherin-10

MacromoleculeName: Protocadherin-10 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 10.866193 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
QLHYTVQEEQ EHGTFVGNIA EDLGLDITKL SARGFQTVPN SRTPYLDLNL ETGVLYVNEK IDREQICKQS PSCVLHLEVF LENPLELFQ VEIEVL

UniProtKB: Protocadherin-10

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Macromolecule #5: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 5 / Number of copies: 8 / Formula: NAG
Molecular weightTheoretical: 221.208 Da
Chemical component information

ChemComp-NAG:
2-acetamido-2-deoxy-beta-D-glucopyranose

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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: 8
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.7 µm / Nominal defocus min: 1.2 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: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 516874
Initial angle assignmentType: PROJECTION MATCHING
Final angle assignmentType: PROJECTION MATCHING

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