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Structure paper

TitleMolecular interactions in rotavirus assembly and uncoating seen by high-resolution cryo-EM.
Journal, issue, pagesProc Natl Acad Sci U S A, Vol. 106, Issue 26, Page 10644-10648, Year 2009
Publish dateJun 30, 2009
AuthorsJames Z Chen / Ethan C Settembre / Scott T Aoki / Xing Zhang / A Richard Bellamy / Philip R Dormitzer / Stephen C Harrison / Nikolaus Grigorieff /
PubMed AbstractRotaviruses, major causes of childhood gastroenteritis, are nonenveloped, icosahedral particles with double-strand RNA genomes. By the use of electron cryomicroscopy and single-particle ...Rotaviruses, major causes of childhood gastroenteritis, are nonenveloped, icosahedral particles with double-strand RNA genomes. By the use of electron cryomicroscopy and single-particle reconstruction, we have visualized a rotavirus particle comprising the inner capsid coated with the trimeric outer-layer protein, VP7, at a resolution (4 A) comparable with that of X-ray crystallography. We have traced the VP7 polypeptide chain, including parts not seen in its X-ray crystal structure. The 3 well-ordered, 30-residue, N-terminal "arms" of each VP7 trimer grip the underlying trimer of VP6, an inner-capsid protein. Structural differences between free and particle-bound VP7 and between free and VP7-coated inner capsids may regulate mRNA transcription and release. The Ca(2+)-stabilized VP7 intratrimer contact region, which presents important neutralizing epitopes, is unaltered upon capsid binding.
External linksProc Natl Acad Sci U S A / PubMed:19487668 / PubMed Central
MethodsEM (single particle)
Resolution3.8 - 5.5 Å
Structure data

1571

3gzt

3gzu

EMDB-1571, PDB-3gzt, PDB-3gzu:
VP7 recoated rotavirus DLP
Method: EM (single particle) / Resolution: 5.5 Å

1609

3gzt

3gzu

EMDB-1609: VP6-VP7 complex structure from VP7 recoated rotavirus DLP
PDB-3gzt: VP7 recoated rotavirus DLP
PDB-3gzu: VP7 recoated rotavirus DLP
Method: EM (single particle) / Resolution: 4.2 Å

Chemicals

ChemComp-CA:
Unknown entry

ChemComp-ZN:
Unknown entry

Source
  • Bos taurus (cattle)
  • rhesus rotavirus
  • rotavirus a
KeywordsVIRUS / rotavirus / VP7 / VP6 / VP2 / 7RP / DLP / Icosahedral virus / Capsid protein / Disulfide bond / Endoplasmic reticulum / Glycoprotein / Membrane / Transmembrane / Virion / Metal-binding / Zinc / Core protein / RNA-binding / Icosaderal virus

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