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TitleThe tail structure of bacteriophage T4 and its mechanism of contraction.
Journal, issue, pagesNat Struct Mol Biol, Vol. 12, Issue 9, Page 810-813, Year 2005
Publish dateAug 14, 2005
AuthorsVictor A Kostyuchenko / Paul R Chipman / Petr G Leiman / Fumio Arisaka / Vadim V Mesyanzhinov / Michael G Rossmann /
PubMed AbstractBacteriophage T4 and related viruses have a contractile tail that serves as an efficient mechanical device for infecting bacteria. A three-dimensional cryo-EM reconstruction of the mature T4 tail ...Bacteriophage T4 and related viruses have a contractile tail that serves as an efficient mechanical device for infecting bacteria. A three-dimensional cryo-EM reconstruction of the mature T4 tail assembly at 15-A resolution shows the hexagonal dome-shaped baseplate, the extended contractile sheath, the long tail fibers attached to the baseplate and the collar formed by six whiskers that interact with the long tail fibers. Comparison with the structure of the contracted tail shows that tail contraction is associated with a substantial rearrangement of the domains within the sheath protein and results in shortening of the sheath to about one-third of its original length. During contraction, the tail tube extends beneath the baseplate by about one-half of its total length and rotates by 345 degrees , allowing it to cross the host's periplasmic space.
External linksNat Struct Mol Biol / PubMed:16116440
MethodsEM (single particle) / EM (helical sym.)
Resolution15.0 Å
Structure data

1126

1zku

2bsg

EMDB-1126: The tail structure of bacteriophage T4 and its mechanism of contraction.
PDB-1zku: Fitting of the gp9 structure in the EM density of bacteriophage T4 extended tail
PDB-2bsg: The modeled structure of fibritin (gpwac) of bacteriophage T4 based on cryo-EM reconstruction of the extended tail of bacteriophage T4
Method: EM (single particle) / Resolution: 15.0 Å

Chemicals

ChemComp-EPE:
4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID / pH buffer*YM / HEPES

Source
  • enterobacteria phage t4 (virus)
  • bacteriophage t4 (virus)
KeywordsVIRAL PROTEIN / Structural protein / ATTACHMENT PROTEIN / BACTERIOPHAGE ASSEMBLY / BACTERIOPHAGE T4 / CHAPERONE / FIBRITIN

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