7N1H

CryoEM structure of Venezuelan equine encephalitis virus VLP in complex with the LDLRAD3 receptor

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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This is version 1.2 of the entry. See complete history. 


Literature

Structure of Venezuelan equine encephalitis virus in complex with the LDLRAD3 receptor.

Basore, K., Ma, H., Kafai, N.M., Mackin, S., Kim, A.S., Nelson, C.A., Diamond, M.S., Fremont, D.H.

(2021) Nature 598: 672-676

  • DOI: 10.1038/s41586-021-03963-9
  • Primary Citation of Related Structures:  
    7N1H, 7N1I

  • PubMed Abstract: 

    • LDLRAD3 is a recently defined attachment and entry receptor for Venezuelan equine encephalitis virus (VEEV) 1 , a New World alphavirus that causes severe neurological disease in humans. Here we present near-atomic-resolution cryo-electron microscopy reconstructions of VEEV virus-like particles alone and in a complex with the ectodomains of LDLRAD3 ...

    LDLRAD3 is a recently defined attachment and entry receptor for Venezuelan equine encephalitis virus (VEEV) 1 , a New World alphavirus that causes severe neurological disease in humans. Here we present near-atomic-resolution cryo-electron microscopy reconstructions of VEEV virus-like particles alone and in a complex with the ectodomains of LDLRAD3. Domain 1 of LDLRAD3 is a low-density lipoprotein receptor type-A module that binds to VEEV by wedging into a cleft created by two adjacent E2-E1 heterodimers in one trimeric spike, and engages domains A and B of E2 and the fusion loop in E1. Atomic modelling of this interface is supported by mutagenesis and anti-VEEV antibody binding competition assays. Notably, VEEV engages LDLRAD3 in a manner that is similar to the way that arthritogenic alphaviruses bind to the structurally unrelated MXRA8 receptor, but with a much smaller interface. These studies further elucidate the structural basis of alphavirus-receptor interactions, which could inform the development of therapies to mitigate infection and disease against multiple members of this family.

    Organizational Affiliation: 

    Department of Biochemistry & Molecular Biophysics, Washington University School of Medicine, St Louis, MO, USA. fremont@wustl.edu.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Low-density lipoprotein receptor class A domain-containing protein 3B [auth M],
C [auth N],
A [auth O],
D [auth P]		39Mus musculusMutation(s): 0 
Gene Names: Ldlrad3
UniProt
Find proteins for A2AR95 (Mus musculus)
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UniProt GroupA2AR95
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
E1 envelope glycoproteinN [auth A],
K [auth B],
H [auth C],
E [auth D]		442Venezuelan equine encephalitis virusMutation(s): 0 
EC: 3.4.21.90
UniProt
Find proteins for A0A0C4MX98 (Venezuelan equine encephalitis virus)
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UniProt GroupA0A0C4MX98
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
E2 envelope glycoproteinO [auth E],
L [auth F],
I [auth G],
F [auth H]		423Venezuelan equine encephalitis virusMutation(s): 0 
EC: 3.4.21.90
UniProt
Find proteins for A0A0C4MX98 (Venezuelan equine encephalitis virus)
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UniProt GroupA0A0C4MX98
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
CapsidP [auth I],
M [auth J],
J [auth K],
G [auth L]		162Venezuelan equine encephalitis virusMutation(s): 0 
EC: 3.4.21.90
UniProt
Find proteins for A0A0C4MX98 (Venezuelan equine encephalitis virus)
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UniProt GroupA0A0C4MX98
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesHHSN272201700060C

Revision History  (Full details and data files)

  • Version 1.0: 2021-10-13
    Type: Initial release
  • Version 1.1: 2021-10-27
    Changes: Database references
  • Version 1.2: 2021-11-10
    Changes: Database references