3J0C image
Entry Detail
PDB ID:
3J0C
Keywords:
Title:
Models of E1, E2 and CP of Venezuelan Equine Encephalitis Virus TC-83 strain restrained by a near atomic resolution cryo-EM map
Biological Source:
PDB Version:
Deposition Date:
2011-06-22
Release Date:
2011-08-24
Method Details:
Experimental Method:
Resolution:
4.80 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:E1 envelope glycoprotein
Chain IDs:A, D, G, J
Chain Length:442
Number of Molecules:4
Biological Source:Venezuelan equine encephalitis virus
Polymer Type:polypeptide(L)
Description:E2 envelope glycoprotein
Chain IDs:B, E, H, K
Chain Length:423
Number of Molecules:4
Biological Source:Venezuelan equine encephalitis virus
Polymer Type:polypeptide(L)
Description:Capsid protein
Chain IDs:C, F, I, L
Chain Length:162
Number of Molecules:4
Biological Source:Venezuelan equine encephalitis virus
Ligand Molecules
Primary Citation
4.4 A cryo-EM structure of an enveloped alphavirus Venezuelan equine encephalitis virus.
Embo J. 30 3854 3863 (2011)
PMID: 21829169 DOI: 10.1038/emboj.2011.261

Abstact

Venezuelan equine encephalitis virus (VEEV), a member of the membrane-containing Alphavirus genus, is a human and equine pathogen, and has been developed as a biological weapon. Using electron cryo-microscopy (cryo-EM), we determined the structure of an attenuated vaccine strain, TC-83, of VEEV to 4.4 Å resolution. Our density map clearly resolves regions (including E1, E2 transmembrane helices and cytoplasmic tails) that were missing in the crystal structures of domains of alphavirus subunits. These new features are implicated in the fusion, assembly and budding processes of alphaviruses. Furthermore, our map reveals the unexpected E3 protein, which is cleaved and generally thought to be absent in the mature VEEV. Our structural results suggest a mechanism for the initial stage of nucleocapsid core formation, and shed light on the virulence attenuation, host recognition and neutralizing activities of VEEV and other alphavirus pathogens.

Legend

Protein

Chemical

Disease

Primary Citation of related structures