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Structure paper

TitleStructural assembly of the tailed bacteriophage ϕ29.
Journal, issue, pagesNat Commun, Vol. 10, Issue 1, Page 2366, Year 2019
Publish dateMay 30, 2019
AuthorsJingwei Xu / Dianhong Wang / Miao Gui / Ye Xiang /
PubMed AbstractThe mature virion of the tailed bacteriophage ϕ29 is an ~33 MDa complex that contains more than 450 subunits of seven structural proteins assembling into a prolate head and a short non-contractile ...The mature virion of the tailed bacteriophage ϕ29 is an ~33 MDa complex that contains more than 450 subunits of seven structural proteins assembling into a prolate head and a short non-contractile tail. Here, we report the near-atomic structures of the ϕ29 pre-genome packaging head (prohead), the mature virion and the genome-emptied virion. Structural comparisons suggest local rotation or oscillation of the head-tail connector upon DNA packaging and release. Termination of the DNA packaging occurs through pressure-dependent correlative positional and conformational changes in the connector. The funnel-shaped tail lower collar attaches the expanded narrow end of the connector and has a 180-Å long, 24-strand β barrel narrow stem tube that undergoes conformational changes upon genome release. The appendages form an interlocked assembly attaching the tail around the collar. The membrane active long loops at the distal end of the tail knob exit during the late stage of infection and form the cone-shaped tip of a largely hydrophobic helix barrel, prepared for membrane penetration.
External linksNat Commun / PubMed:31147544 / PubMed Central
MethodsEM (single particle) / X-ray diffraction
Resolution1.8 - 5.0 Å
Structure data

EMDB-4655, PDB-6qvk:
The cryo-EM structure of bacteriophage phi29 prohead
Method: EM (single particle) / Resolution: 3.6 Å

EMDB-4662, PDB-6qx7:
The cryo-EM structure of connector in bacteriophage phi29 prohead
Method: EM (single particle) / Resolution: 3.8 Å

EMDB-4677, PDB-6qyd:
Cryo-EM structure of the head in mature bacteriophage phi29
Method: EM (single particle) / Resolution: 3.2 Å

EMDB-4678, PDB-6qyj:
The cryo-EM structure of the connector of the mature bacteriophage phi29
Method: EM (single particle) / Resolution: 3.4 Å

EMDB-4679, PDB-6qym:
The cryo-EM structure of the connector of the genome empited bacteriophage phi29
Method: EM (single particle) / Resolution: 3.6 Å

EMDB-4680, PDB-6qyz:
The cryo-EM structure of prohead RNA in bacteriophage phi29 prohead
Method: EM (single particle) / Resolution: 4.6 Å

EMDB-4681, PDB-6qz0:
The cryo-EM structure of the head of the genome empited bacteriophage phi29
Method: EM (single particle) / Resolution: 3.2 Å

EMDB-4682:
The cryo-EM structure of the tail knob in the bacteriophage phi29
Method: EM (single particle) / Resolution: 5.0 Å

EMDB-4683:
The cryo-EM structure of the tail knob in genome empited bacteriophage phi29
Method: EM (single particle) / Resolution: 4.2 Å

EMDB-4684, PDB-6qz9:
The cryo-EM structure of the collar complex and tail axis in bacteriophage phi29
Method: EM (single particle) / Resolution: 3.3 Å

EMDB-4685, PDB-6qzf:
The cryo-EM structure of the collar complex and tail axis in genome emptied bacteriophage phi29
Method: EM (single particle) / Resolution: 3.8 Å

PDB-6qyy:
The crystal structure of head fiber gp8.5 N base in bacteriophage phi29
Method: X-RAY DIFFRACTION / Resolution: 1.8 Å

Chemicals

ChemComp-SO4:
SULFATE ION

ChemComp-HOH:
WATER

Source
  • bacillus phage phi29 (virus)
KeywordsVIRUS / bacteriophage / phi29 / prohead / cryo-EM / mature virus / genome emptied virion / mature virion

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