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Title4.4 Å cryo-EM structure of an enveloped alphavirus Venezuelan equine encephalitis virus.
Journal, issue, pagesEMBO J, Vol. 30, Issue 18, Page 3854-3863, Year 2011
Publish dateAug 9, 2011
AuthorsRui Zhang / Corey F Hryc / Yao Cong / Xiangan Liu / Joanita Jakana / Rodion Gorchakov / Matthew L Baker / Scott C Weaver / Wah Chiu /
PubMed AbstractVenezuelan 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- ...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.
External linksEMBO J / PubMed:21829169 / PubMed Central
MethodsEM (single particle)
Resolution4.8 Å
Structure data

5275

3j0c

3j0g

EMDB-5275: 4.4 Angstrom Cryo-EM Structure of an Enveloped Alphavirus Venezuelan Equine Encephalitis Virus
PDB-3j0c: Models of E1, E2 and CP of Venezuelan Equine Encephalitis Virus TC-83 strain restrained by a near atomic resolution cryo-EM map
PDB-3j0g: Homology model of E3 protein of Venezuelan Equine Encephalitis Virus TC-83 strain fitted with a cryo-EM map
Method: EM (single particle) / Resolution: 4.8 Å

5276

3j0c

3j0g

EMDB-5276: 4.4 Angstrom Cryo-EM Structure of an Enveloped Alphavirus Venezuelan Equine Encephalitis Virus
PDB-3j0c: Models of E1, E2 and CP of Venezuelan Equine Encephalitis Virus TC-83 strain restrained by a near atomic resolution cryo-EM map
PDB-3j0g: Homology model of E3 protein of Venezuelan Equine Encephalitis Virus TC-83 strain fitted with a cryo-EM map
Method: EM (single particle) / Resolution: 4.8 Å

Source
  • venezuelan equine encephalitis virus
KeywordsVIRUS / alphavirus / bioweapon / VEEV

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