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TitleSpindle-shaped archaeal viruses evolved from rod-shaped ancestors to package a larger genome.
Journal, issue, pagesCell, Vol. 185, Issue 8, Page 1297-1307.e11, Year 2022
Publish dateApr 14, 2022
AuthorsFengbin Wang / Virginija Cvirkaite-Krupovic / Matthijn Vos / Leticia C Beltran / Mark A B Kreutzberger / Jean-Marie Winter / Zhangli Su / Jun Liu / Stefan Schouten / Mart Krupovic / Edward H Egelman /
PubMed AbstractSpindle- or lemon-shaped viruses infect archaea in diverse environments. Due to the highly pleomorphic nature of these virions, which can be found with cylindrical tails emanating from the spindle- ...Spindle- or lemon-shaped viruses infect archaea in diverse environments. Due to the highly pleomorphic nature of these virions, which can be found with cylindrical tails emanating from the spindle-shaped body, structural studies of these capsids have been challenging. We have determined the atomic structure of the capsid of Sulfolobus monocaudavirus 1, a virus that infects hosts living in nearly boiling acid. A highly hydrophobic protein, likely integrated into the host membrane before the virions assemble, forms 7 strands that slide past each other in both the tails and the spindle body. We observe the discrete steps that occur as the tail tubes expand, and these are due to highly conserved quasiequivalent interactions with neighboring subunits maintained despite significant diameter changes. Our results show how helical assemblies can vary their diameters, becoming nearly spherical to package a larger genome and suggest how all spindle-shaped viruses have evolved from archaeal rod-like viruses.
External linksCell / PubMed:35325592 / PubMed Central
MethodsEM (helical sym.)
Resolution3.7 - 6.3 Å
Structure data

EMDB-24585, PDB-7ro2:
Cryo-EM reconstruction of Sulfolobus monocaudavirus SMV1, symmetry 1
Method: EM (helical sym.) / Resolution: 5.1 Å

EMDB-24586, PDB-7ro3:
Cryo-EM reconstruction of Sulfolobus monocaudavirus SMV1, symmetry 2
Method: EM (helical sym.) / Resolution: 4.8 Å

EMDB-24587, PDB-7ro4:
Cryo-EM reconstruction of Sulfolobus monocaudavirus SMV1, symmetry 3
Method: EM (helical sym.) / Resolution: 4.3 Å

EMDB-24588, PDB-7ro5:
Cryo-EM reconstruction of Sulfolobus monocaudavirus SMV1, symmetry 4
Method: EM (helical sym.) / Resolution: 4.1 Å

EMDB-24589, PDB-7ro6:
Cryo-EM reconstruction of Sulfolobus monocaudavirus SMV1, symmetry 5
Method: EM (helical sym.) / Resolution: 4.1 Å

EMDB-24590, PDB-7rob:
Cryo-EM reconstruction of Sulfolobus monocaudavirus SMV1, symmetry 6
Method: EM (helical sym.) / Resolution: 3.9 Å

EMDB-24591, PDB-7roc:
Cryo-EM reconstruction of Sulfolobus monocaudavirus SMV1, symmetry 7
Method: EM (helical sym.) / Resolution: 3.7 Å

EMDB-24592, PDB-7rod:
Cryo-EM reconstruction of Sulfolobus monocaudavirus SMV1, symmetry 8
Method: EM (helical sym.) / Resolution: 3.8 Å

EMDB-24593, PDB-7roe:
Cryo-EM reconstruction of Sulfolobus monocaudavirus SMV1, symmetry 9
Method: EM (helical sym.) / Resolution: 3.7 Å

EMDB-24594, PDB-7rog:
Cryo-EM reconstruction of Sulfolobus monocaudavirus SMV1, symmetry 10
Method: EM (helical sym.) / Resolution: 3.8 Å

EMDB-24595, PDB-7roh:
Cryo-EM reconstruction of Sulfolobus monocaudavirus SMV1, symmetry 11
Method: EM (helical sym.) / Resolution: 4.0 Å

EMDB-24596: Cryo-EM reconstruction of Acidianus two-tailed virus, ATV
Method: EM (helical sym.) / Resolution: 6.3 Å

EMDB-24597, PDB-7roi:
Cryo-EM reconstruction of Sulfolobus monocaudavirus SMV1, symmetry 12
Method: EM (helical sym.) / Resolution: 4.3 Å

Source
  • sulfolobus monocaudavirus smv1
KeywordsVIRUS / helical symmetry / archaeal virus / lemon-shaped virus / spindle-shaped virus

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