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- EMDB-38376: Overall structure of Eastern Equine Encephalitis VLP in complex w... -

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Basic information

Entry
Database: EMDB / ID: EMD-38376
TitleOverall structure of Eastern Equine Encephalitis VLP in complex with the receptor VLDLR LA1-2
Map data
Sample
  • Complex: East Equine Encephalitis virus VLP in complex with its receptor VLDLR LA1-2
KeywordsEast Equine Encephalitis virus / EEEV / receptor / complex / VLDLR / glycoprotein / VIRAL PROTEIN
Function / homology
Function and homology information


reelin receptor activity / VLDL clearance / glycoprotein transport / ventral spinal cord development / very-low-density lipoprotein particle receptor activity / Reelin signalling pathway / very-low-density lipoprotein particle binding / reelin-mediated signaling pathway / low-density lipoprotein particle receptor activity / togavirin ...reelin receptor activity / VLDL clearance / glycoprotein transport / ventral spinal cord development / very-low-density lipoprotein particle receptor activity / Reelin signalling pathway / very-low-density lipoprotein particle binding / reelin-mediated signaling pathway / low-density lipoprotein particle receptor activity / togavirin / very-low-density lipoprotein particle clearance / very-low-density lipoprotein particle / T=4 icosahedral viral capsid / positive regulation of dendrite development / dendrite morphogenesis / cargo receptor activity / lipid transport / apolipoprotein binding / clathrin-coated pit / cholesterol metabolic process / VLDLR internalisation and degradation / receptor-mediated endocytosis / memory / symbiont-mediated suppression of host gene expression / calcium-dependent protein binding / nervous system development / symbiont-mediated suppression of host toll-like receptor signaling pathway / host cell cytoplasm / receptor complex / symbiont entry into host cell / lysosomal membrane / serine-type endopeptidase activity / fusion of virus membrane with host endosome membrane / calcium ion binding / host cell nucleus / virion attachment to host cell / host cell plasma membrane / 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. / Alphavirus E2 glycoprotein, domain B / LDLR class B repeat / Low-density lipoprotein-receptor YWTD domain / 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. / Alphavirus E2 glycoprotein, domain B / LDLR class B repeat / Low-density lipoprotein-receptor YWTD domain / 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 E1 glycoprotein / Alphavirus core protein (CP) domain profile. / Alphavirus E3 glycoprotein / Low-density lipoprotein receptor domain class A / : / Low-density lipoprotein (LDL) receptor class A, conserved site / LDL-receptor class A (LDLRA) domain signature. / LDL-receptor class A (LDLRA) domain profile. / Calcium-binding EGF domain / 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
Very low-density lipoprotein receptor / Structural polyprotein
Similarity search - Component
Biological speciesEastern equine encephalitis virus
Methodsingle particle reconstruction / cryo EM / Resolution: 5.2 Å
AuthorsCao D / Ma B / Cao Z / Xu X / 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: Nat Commun / Year: 2024
Title: The receptor VLDLR binds Eastern Equine Encephalitis virus through multiple distinct modes.
Authors: Duanfang Cao / Bingting Ma / Ziyi Cao / Xiaoyu Xu / Xinzheng Zhang / Ye Xiang /
Abstract: Eastern Equine Encephalitis virus (EEEV) is an alphavirus that can cause severe diseases in infected humans. The very low-density lipoprotein receptor (VLDLR) was recently identified as a receptor of ...Eastern Equine Encephalitis virus (EEEV) is an alphavirus that can cause severe diseases in infected humans. The very low-density lipoprotein receptor (VLDLR) was recently identified as a receptor of EEEV. Herein, we performed cryo-electron microscopy structural and biochemistry studies on the specific interactions between EEEV and VLDLR. Our results show that VLDLR binds EEEV at three different sites A, B and C through its membrane-distal LDLR class A (LA) repeats. Site A is located in the cleft in between the E1-E2 heterodimers. Site B is located near the connecting β ribbon of E2 and is in proximity to site A, while site C is on the domain B of E2. The binding of VLDLR LAs to EEEV is in complex modes, including the LA1-2 and LA3-5 mediated two major modes. Disruption of the LA1-2 mediated binding significantly affect the cell attachment of EEEV. However, the mutation W132G of VLDLR impairs the binding of LA3, drives the switch of the binding modes, and significantly enhances the attachment of EEEV to the cell. The W132G variant of VLDLR could be identified in human genome and SNP sequences, implying that people with similar mutations in VLDLR may be highly susceptible to EEEV infection.
History
DepositionDec 19, 2023-
Header (metadata) releaseAug 28, 2024-
Map releaseAug 28, 2024-
UpdateAug 28, 2024-
Current statusAug 28, 2024Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_38376.png

Downloads & links

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Map

FileDownload / File: emd_38376.map.gz / Format: CCP4 / Size: 759.8 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.)
1.35 Å/pix.
x 584 pix.
= 788.4 Å		1.35 Å/pix.
x 584 pix.
= 788.4 Å		1.35 Å/pix.
x 584 pix.
= 788.4 Å

Surface

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Images are generated by Spider.

Voxel sizeX=Y=Z: 1.35 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.008
Minimum - Maximum-0.0067530447 - 0.027060078
Average (Standard dev.)0.0015455764 (±0.003465842)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions584584584
Spacing584584584
CellA=B=C: 788.4 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #1

Fileemd_38376_half_map_1.map
Projections & Slices
AxesZYX

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Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #2

Fileemd_38376_half_map_2.map
Projections & Slices
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Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : East Equine Encephalitis virus VLP in complex with its receptor V...

EntireName: East Equine Encephalitis virus VLP in complex with its receptor VLDLR LA1-2
Components
  • Complex: East Equine Encephalitis virus VLP in complex with its receptor VLDLR LA1-2

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Supramolecule #1: East Equine Encephalitis virus VLP in complex with its receptor V...

SupramoleculeName: East Equine Encephalitis virus VLP in complex with its receptor VLDLR LA1-2
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#4
Source (natural)Organism: Eastern equine encephalitis virus

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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

MicroscopeFEI TITAN 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

Startup modelType of model: OTHER
Final reconstructionResolution.type: BY AUTHOR / Resolution: 5.2 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 15654
Initial angle assignmentType: PROJECTION MATCHING
Final angle assignmentType: PROJECTION MATCHING

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